CINXE.COM

<!DOCTYPE html> <html class="client-nojs vector-feature-language-in-header-enabled vector-feature-language-in-main-page-header-disabled vector-feature-page-tools-pinned-disabled vector-feature-toc-pinned-clientpref-1 vector-feature-main-menu-pinned-disabled vector-feature-limited-width-clientpref-1 vector-feature-limited-width-content-enabled vector-feature-custom-font-size-clientpref-1 vector-feature-appearance-pinned-clientpref-1 vector-feature-night-mode-enabled skin-theme-clientpref-day vector-sticky-header-enabled vector-toc-available" lang="pt" dir="ltr"> <head> <meta charset="UTF-8"> <title>Codec – Wikipédia, a enciclopédia livre</title> <script>(function(){var className="client-js vector-feature-language-in-header-enabled vector-feature-language-in-main-page-header-disabled vector-feature-page-tools-pinned-disabled vector-feature-toc-pinned-clientpref-1 vector-feature-main-menu-pinned-disabled vector-feature-limited-width-clientpref-1 vector-feature-limited-width-content-enabled vector-feature-custom-font-size-clientpref-1 vector-feature-appearance-pinned-clientpref-1 vector-feature-night-mode-enabled skin-theme-clientpref-day vector-sticky-header-enabled vector-toc-available";var cookie=document.cookie.match(/(?:^|; )ptwikimwclientpreferences=([^;]+)/);if(cookie){cookie[1].split('%2C').forEach(function(pref){className=className.replace(new RegExp('(^| )'+pref.replace(/-clientpref-\w+$|[^\w-]+/g,'')+'-clientpref-\\w+( |$)'),'$1'+pref+'$2');});}document.documentElement.className=className;}());RLCONF={"wgBreakFrames":false,"wgSeparatorTransformTable":[",\t."," \t,"],"wgDigitTransformTable":["",""],"wgDefaultDateFormat":"dmy","wgMonthNames":["","janeiro","fevereiro","março","abril","maio","junho","julho","agosto","setembro","outubro","novembro","dezembro"],"wgRequestId":"29b88655-9f04-45c0-9dff-522163845a0f","wgCanonicalNamespace":"","wgCanonicalSpecialPageName":false,"wgNamespaceNumber":0,"wgPageName":"Codec","wgTitle":"Codec","wgCurRevisionId":64844197,"wgRevisionId":64844197,"wgArticleId":137769,"wgIsArticle":true,"wgIsRedirect":false,"wgAction":"view","wgUserName":null,"wgUserGroups":["*"],"wgCategories":["!Artigos que carecem de fontes secundárias desde março de 2012","!Artigos que carecem de fontes secundárias sem indicação de tema","Compressão de dados","Processamento de sinais"],"wgPageViewLanguage":"pt","wgPageContentLanguage":"pt","wgPageContentModel":"wikitext","wgRelevantPageName":"Codec","wgRelevantArticleId":137769,"wgIsProbablyEditable":true,"wgRelevantPageIsProbablyEditable":true,"wgRestrictionEdit":[],"wgRestrictionMove":[],"wgNoticeProject":"wikipedia","wgCiteReferencePreviewsActive":false,"wgMediaViewerOnClick":true,"wgMediaViewerEnabledByDefault":true,"wgPopupsFlags":0,"wgVisualEditor":{"pageLanguageCode":"pt","pageLanguageDir":"ltr","pageVariantFallbacks":"pt"},"wgMFDisplayWikibaseDescriptions":{"search":true,"watchlist":true,"tagline":true,"nearby":true},"wgWMESchemaEditAttemptStepOversample":false,"wgWMEPageLength":5000,"wgEditSubmitButtonLabelPublish":true,"wgULSPosition":"interlanguage","wgULSisCompactLinksEnabled":false,"wgVector2022LanguageInHeader":true,"wgULSisLanguageSelectorEmpty":false,"wgWikibaseItemId":"Q184748","wgCheckUserClientHintsHeadersJsApi":["brands","architecture","bitness","fullVersionList","mobile","model","platform","platformVersion"],"GEHomepageSuggestedEditsEnableTopics":true,"wgGETopicsMatchModeEnabled":true,"wgGELevelingUpEnabledForUser":false,"wgSiteNoticeId":"2.30"}; RLSTATE={"ext.gadget.FeedbackHighlight-base":"ready","ext.gadget.keepPDU":"ready","ext.globalCssJs.user.styles":"ready","site.styles":"ready","user.styles":"ready","ext.globalCssJs.user":"ready","user":"ready","user.options":"loading","ext.cite.styles":"ready","skins.vector.search.codex.styles":"ready","skins.vector.styles":"ready","skins.vector.icons":"ready","ext.wikimediamessages.styles":"ready","ext.visualEditor.desktopArticleTarget.noscript":"ready","ext.uls.interlanguage":"ready","wikibase.client.init":"ready","ext.dismissableSiteNotice.styles":"ready"};RLPAGEMODULES=["ext.cite.ux-enhancements","site","mediawiki.page.ready","mediawiki.toc","skins.vector.js","ext.centralNotice.geoIP","ext.centralNotice.startUp","ext.gadget.Topicon","ext.gadget.Metacaixa","ext.gadget.TitleRewrite","ext.gadget.ElementosOcultaveis","ext.gadget.FeedbackHighlight","ext.gadget.ReferenceTooltips","ext.gadget.NewVillagePump","ext.gadget.wikibugs","ext.gadget.charinsert","ext.gadget.requestForAdminship","ext.gadget.WikiMiniAtlas","ext.gadget.PagesForDeletion","ext.gadget.switcher","ext.urlShortener.toolbar","ext.centralauth.centralautologin","mmv.bootstrap","ext.popups","ext.visualEditor.desktopArticleTarget.init","ext.visualEditor.targetLoader","ext.echo.centralauth","ext.eventLogging","ext.wikimediaEvents","ext.navigationTiming","ext.uls.interface","ext.cx.eventlogging.campaigns","ext.cx.uls.quick.actions","wikibase.client.vector-2022","ext.checkUser.clientHints","ext.growthExperiments.SuggestedEditSession","oojs-ui.styles.icons-media","oojs-ui-core.icons","ext.dismissableSiteNotice"];</script> <script>(RLQ=window.RLQ||[]).push(function(){mw.loader.impl(function(){return["user.options@12s5i",function($,jQuery,require,module){mw.user.tokens.set({"patrolToken":"+\\","watchToken":"+\\","csrfToken":"+\\"}); }];});});</script> <link rel="stylesheet" href="/w/load.php?lang=pt&modules=ext.cite.styles%7Cext.dismissableSiteNotice.styles%7Cext.uls.interlanguage%7Cext.visualEditor.desktopArticleTarget.noscript%7Cext.wikimediamessages.styles%7Cskins.vector.icons%2Cstyles%7Cskins.vector.search.codex.styles%7Cwikibase.client.init&only=styles&skin=vector-2022"> <script async="" src="/w/load.php?lang=pt&modules=startup&only=scripts&raw=1&skin=vector-2022"></script> <meta name="ResourceLoaderDynamicStyles" content=""> <link rel="stylesheet" href="/w/load.php?lang=pt&modules=ext.gadget.FeedbackHighlight-base%2CkeepPDU&only=styles&skin=vector-2022"> <link rel="stylesheet" href="/w/load.php?lang=pt&modules=site.styles&only=styles&skin=vector-2022"> <meta name="generator" content="MediaWiki 1.44.0-wmf.21"> <meta name="referrer" content="origin"> <meta name="referrer" content="origin-when-cross-origin"> <meta name="robots" content="max-image-preview:standard"> <meta name="format-detection" content="telephone=no"> <meta name="viewport" content="width=1120"> <meta property="og:title" content="Codec – Wikipédia, a enciclopédia livre"> <meta property="og:type" content="website"> <link rel="preconnect" href="//upload.wikimedia.org"> <link rel="alternate" media="only screen and (max-width: 640px)" href="//pt.m.wikipedia.org/wiki/Codec"> <link rel="alternate" type="application/x-wiki" title="Editar" href="/w/index.php?title=Codec&action=edit"> <link rel="apple-touch-icon" href="/static/apple-touch/wikipedia.png"> <link rel="icon" href="/static/favicon/wikipedia.ico"> <link rel="search" type="application/opensearchdescription+xml" href="/w/rest.php/v1/search" title="Wikipédia (pt)"> <link rel="EditURI" type="application/rsd+xml" href="//pt.wikipedia.org/w/api.php?action=rsd"> <link rel="canonical" href="https://pt.wikipedia.org/wiki/Codec"> <link rel="license" href="https://creativecommons.org/licenses/by-sa/4.0/deed.pt"> <link rel="alternate" type="application/atom+xml" title="''Feed'' Atom Wikipédia" href="/w/index.php?title=Especial:Mudan%C3%A7as_recentes&feed=atom"> <link rel="dns-prefetch" href="//meta.wikimedia.org" /> <link rel="dns-prefetch" href="login.wikimedia.org"> </head> <body class="skin--responsive skin-vector skin-vector-search-vue mediawiki ltr sitedir-ltr mw-hide-empty-elt ns-0 ns-subject mw-editable page-Codec rootpage-Codec skin-vector-2022 action-view"><a class="mw-jump-link" href="#bodyContent">Saltar para o conteúdo</a> <div class="vector-header-container"> <header class="vector-header mw-header"> <div class="vector-header-start"> <nav class="vector-main-menu-landmark" aria-label="''Site''"> <div id="vector-main-menu-dropdown" class="vector-dropdown vector-main-menu-dropdown vector-button-flush-left vector-button-flush-right" title="Menu principal" > <input type="checkbox" id="vector-main-menu-dropdown-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-vector-main-menu-dropdown" class="vector-dropdown-checkbox " aria-label="Menu principal" > <label id="vector-main-menu-dropdown-label" for="vector-main-menu-dropdown-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--icon-only " aria-hidden="true" ><span class="vector-icon mw-ui-icon-menu mw-ui-icon-wikimedia-menu"></span> <span class="vector-dropdown-label-text">Menu principal</span> </label> <div class="vector-dropdown-content"> <div id="vector-main-menu-unpinned-container" class="vector-unpinned-container"> <div id="vector-main-menu" class="vector-main-menu vector-pinnable-element"> <div class="vector-pinnable-header vector-main-menu-pinnable-header vector-pinnable-header-unpinned" data-feature-name="main-menu-pinned" data-pinnable-element-id="vector-main-menu" data-pinned-container-id="vector-main-menu-pinned-container" data-unpinned-container-id="vector-main-menu-unpinned-container" > <div class="vector-pinnable-header-label">Menu principal</div> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-pin-button" data-event-name="pinnable-header.vector-main-menu.pin">mover para a barra lateral</button> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-unpin-button" data-event-name="pinnable-header.vector-main-menu.unpin">ocultar</button> </div> <div id="p-navigation" class="vector-menu mw-portlet mw-portlet-navigation" > <div class="vector-menu-heading"> Navegação </div> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="n-mainpage-description" class="mw-list-item"><a href="/wiki/Wikip%C3%A9dia:P%C3%A1gina_principal" title="Visitar a página principal [z]" accesskey="z"><span>Página principal</span></a></li><li id="n-featuredcontent" class="mw-list-item"><a href="/wiki/Portal:Conte%C3%BAdo_destacado"><span>Conteúdo destacado</span></a></li><li id="n-currentevents" class="mw-list-item"><a href="/wiki/Portal:Eventos_atuais" title="Informação temática sobre eventos atuais"><span>Eventos atuais</span></a></li><li id="n-villagepump" class="mw-list-item"><a href="/wiki/Wikip%C3%A9dia:Esplanada"><span>Esplanada</span></a></li><li id="n-randompage" class="mw-list-item"><a href="/wiki/Especial:Aleat%C3%B3ria" title="Carregar página aleatória [x]" accesskey="x"><span>Página aleatória</span></a></li><li id="n-portals" class="mw-list-item"><a href="/wiki/Portal:%C3%8Dndice"><span>Portais</span></a></li><li id="n-bug_in_article" class="mw-list-item"><a href="/wiki/Wikip%C3%A9dia:Informe_um_erro"><span>Informar um erro</span></a></li><li id="n-specialpages" class="mw-list-item"><a href="/wiki/Especial:P%C3%A1ginas_especiais"><span>Páginas especiais</span></a></li> </ul> </div> </div> <div id="p-interaction" class="vector-menu mw-portlet mw-portlet-interaction" > <div class="vector-menu-heading"> Colaboração </div> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="n-welcome" class="mw-list-item"><a href="/wiki/Wikip%C3%A9dia:Boas-vindas"><span>Boas-vindas</span></a></li><li id="n-help" class="mw-list-item"><a href="/wiki/Ajuda:P%C3%A1gina_principal" title="Um local reservado para auxílio."><span>Ajuda</span></a></li><li id="n-Páginas-de-testes-públicas" class="mw-list-item"><a href="/wiki/Ajuda:P%C3%A1gina_de_testes"><span>Páginas de testes públicas</span></a></li><li id="n-portal" class="mw-list-item"><a href="/wiki/Wikip%C3%A9dia:Portal_comunit%C3%A1rio" title="Sobre o projeto"><span>Portal comunitário</span></a></li><li id="n-recentchanges" class="mw-list-item"><a href="/wiki/Especial:Mudan%C3%A7as_recentes" title="Uma lista de mudanças recentes nesta wiki [r]" accesskey="r"><span>Mudanças recentes</span></a></li><li id="n-maintenance" class="mw-list-item"><a href="/wiki/Wikip%C3%A9dia:Manuten%C3%A7%C3%A3o"><span>Manutenção</span></a></li><li id="n-createpage" class="mw-list-item"><a href="/wiki/Ajuda:Guia_de_edi%C3%A7%C3%A3o/Como_come%C3%A7ar_uma_p%C3%A1gina"><span>Criar página</span></a></li><li id="n-newpages-description" class="mw-list-item"><a href="/wiki/Especial:P%C3%A1ginas_novas"><span>Páginas novas</span></a></li><li id="n-contact-description" class="mw-list-item"><a href="/wiki/Wikip%C3%A9dia:Contato"><span>Contato</span></a></li> </ul> </div> </div> </div> </div> </div> </div> </nav> <a href="/wiki/Wikip%C3%A9dia:P%C3%A1gina_principal" class="mw-logo"> <img class="mw-logo-icon" src="/static/images/icons/wikipedia.png" alt="" aria-hidden="true" height="50" width="50"> <span class="mw-logo-container skin-invert"> <img class="mw-logo-wordmark" alt="Wikipédia" src="/static/images/mobile/copyright/wikipedia-wordmark-fr.svg" style="width: 7.4375em; height: 1.125em;"> <img class="mw-logo-tagline" alt="" src="/static/images/mobile/copyright/wikipedia-tagline-pt.svg" width="120" height="13" style="width: 7.5em; height: 0.8125em;"> </span> </a> </div> <div class="vector-header-end"> <div id="p-search" role="search" class="vector-search-box-vue vector-search-box-collapses vector-search-box-show-thumbnail vector-search-box-auto-expand-width vector-search-box"> <a href="/wiki/Especial:Pesquisar" class="cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--icon-only search-toggle" title="Pesquisar na Wikipédia [f]" accesskey="f"><span class="vector-icon mw-ui-icon-search mw-ui-icon-wikimedia-search"></span> <span>Busca</span> </a> <div class="vector-typeahead-search-container"> <div class="cdx-typeahead-search cdx-typeahead-search--show-thumbnail cdx-typeahead-search--auto-expand-width"> <form action="/w/index.php" id="searchform" class="cdx-search-input cdx-search-input--has-end-button"> <div id="simpleSearch" class="cdx-search-input__input-wrapper" data-search-loc="header-moved"> <div class="cdx-text-input cdx-text-input--has-start-icon"> <input class="cdx-text-input__input" type="search" name="search" placeholder="Pesquisar na Wikipédia" aria-label="Pesquisar na Wikipédia" autocapitalize="sentences" title="Pesquisar na Wikipédia [f]" accesskey="f" id="searchInput" > <span class="cdx-text-input__icon cdx-text-input__start-icon"></span> </div> <input type="hidden" name="title" value="Especial:Pesquisar"> </div> <button class="cdx-button cdx-search-input__end-button">Pesquisar</button> </form> </div> </div> </div> <nav class="vector-user-links vector-user-links-wide" aria-label="Ferramentas pessoais"> <div class="vector-user-links-main"> <div id="p-vector-user-menu-preferences" class="vector-menu mw-portlet emptyPortlet" > <div class="vector-menu-content"> <ul class="vector-menu-content-list"> </ul> </div> </div> <div id="p-vector-user-menu-userpage" class="vector-menu mw-portlet emptyPortlet" > <div class="vector-menu-content"> <ul class="vector-menu-content-list"> </ul> </div> </div> <nav class="vector-appearance-landmark" aria-label="Aspeto"> <div id="vector-appearance-dropdown" class="vector-dropdown " title="Change the appearance of the page's font size, width, and color" > <input type="checkbox" id="vector-appearance-dropdown-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-vector-appearance-dropdown" class="vector-dropdown-checkbox " aria-label="Aspeto" > <label id="vector-appearance-dropdown-label" for="vector-appearance-dropdown-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--icon-only " aria-hidden="true" ><span class="vector-icon mw-ui-icon-appearance mw-ui-icon-wikimedia-appearance"></span> <span class="vector-dropdown-label-text">Aspeto</span> </label> <div class="vector-dropdown-content"> <div id="vector-appearance-unpinned-container" class="vector-unpinned-container"> </div> </div> </div> </nav> <div id="p-vector-user-menu-notifications" class="vector-menu mw-portlet emptyPortlet" > <div class="vector-menu-content"> <ul class="vector-menu-content-list"> </ul> </div> </div> <div id="p-vector-user-menu-overflow" class="vector-menu mw-portlet" > <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="pt-sitesupport-2" class="user-links-collapsible-item mw-list-item user-links-collapsible-item"><a data-mw="interface" href="https://donate.wikimedia.org/?wmf_source=donate&wmf_medium=sidebar&wmf_campaign=pt.wikipedia.org&uselang=pt" class=""><span>Donativos</span></a> </li> <li id="pt-createaccount-2" class="user-links-collapsible-item mw-list-item user-links-collapsible-item"><a data-mw="interface" href="/w/index.php?title=Especial:Criar_conta&returnto=Codec" title="É encorajado a criar uma conta e iniciar sessão; no entanto, não é obrigatório" class=""><span>Criar uma conta</span></a> </li> <li id="pt-login-2" class="user-links-collapsible-item mw-list-item user-links-collapsible-item"><a data-mw="interface" href="/w/index.php?title=Especial:Entrar&returnto=Codec" title="Aconselhamos-lhe a criar uma conta na Wikipédia, embora tal não seja obrigatório. [o]" accesskey="o" class=""><span>Entrar</span></a> </li> </ul> </div> </div> </div> <div id="vector-user-links-dropdown" class="vector-dropdown vector-user-menu vector-button-flush-right vector-user-menu-logged-out" title="Mais opções" > <input type="checkbox" id="vector-user-links-dropdown-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-vector-user-links-dropdown" class="vector-dropdown-checkbox " aria-label="Ferramentas pessoais" > <label id="vector-user-links-dropdown-label" for="vector-user-links-dropdown-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--icon-only " aria-hidden="true" ><span class="vector-icon mw-ui-icon-ellipsis mw-ui-icon-wikimedia-ellipsis"></span> <span class="vector-dropdown-label-text">Ferramentas pessoais</span> </label> <div class="vector-dropdown-content"> <div id="p-personal" class="vector-menu mw-portlet mw-portlet-personal user-links-collapsible-item" title="Menu do utilizador" > <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="pt-sitesupport" class="user-links-collapsible-item mw-list-item"><a href="https://donate.wikimedia.org/?wmf_source=donate&wmf_medium=sidebar&wmf_campaign=pt.wikipedia.org&uselang=pt"><span>Donativos</span></a></li><li id="pt-createaccount" class="user-links-collapsible-item mw-list-item"><a href="/w/index.php?title=Especial:Criar_conta&returnto=Codec" title="É encorajado a criar uma conta e iniciar sessão; no entanto, não é obrigatório"><span class="vector-icon mw-ui-icon-userAdd mw-ui-icon-wikimedia-userAdd"></span> <span>Criar uma conta</span></a></li><li id="pt-login" class="user-links-collapsible-item mw-list-item"><a href="/w/index.php?title=Especial:Entrar&returnto=Codec" title="Aconselhamos-lhe a criar uma conta na Wikipédia, embora tal não seja obrigatório. [o]" accesskey="o"><span class="vector-icon mw-ui-icon-logIn mw-ui-icon-wikimedia-logIn"></span> <span>Entrar</span></a></li> </ul> </div> </div> <div id="p-user-menu-anon-editor" class="vector-menu mw-portlet mw-portlet-user-menu-anon-editor" > <div class="vector-menu-heading"> Páginas para editores sem sessão iniciada <a href="/wiki/Ajuda:Introduction" aria-label="Saiba mais sobre edição"><span>saber mais</span></a> </div> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="pt-anoncontribs" class="mw-list-item"><a href="/wiki/Especial:Minhas_contribui%C3%A7%C3%B5es" title="Uma lista de edições feitas a partir deste endereço IP [y]" accesskey="y"><span>Contribuições</span></a></li><li id="pt-anontalk" class="mw-list-item"><a href="/wiki/Especial:Minha_discuss%C3%A3o" title="Discussão sobre edições feitas a partir deste endereço IP [n]" accesskey="n"><span>Discussão</span></a></li> </ul> </div> </div> </div> </div> </nav> </div> </header> </div> <div class="mw-page-container"> <div class="mw-page-container-inner"> <div class="vector-sitenotice-container"> <div id="siteNotice"><div id="mw-dismissablenotice-anonplace"></div><script>(function(){var node=document.getElementById("mw-dismissablenotice-anonplace");if(node){node.outerHTML="\u003Cdiv class=\"mw-dismissable-notice\"\u003E\u003Cdiv class=\"mw-dismissable-notice-close\"\u003E[\u003Ca tabindex=\"0\" role=\"button\"\u003Eocultar\u003C/a\u003E]\u003C/div\u003E\u003Cdiv class=\"mw-dismissable-notice-body\"\u003E\u003C!-- CentralNotice --\u003E\u003Cdiv id=\"localNotice\" data-nosnippet=\"\"\u003E\u003Cdiv class=\"anonnotice\" lang=\"pt\" dir=\"ltr\"\u003E\u003C/div\u003E\u003C/div\u003E\u003C/div\u003E\u003C/div\u003E";}}());</script></div> </div> <div class="vector-column-start"> <div class="vector-main-menu-container"> <div id="mw-navigation"> <nav id="mw-panel" class="vector-main-menu-landmark" aria-label="''Site''"> <div id="vector-main-menu-pinned-container" class="vector-pinned-container"> </div> </nav> </div> </div> <div class="vector-sticky-pinned-container"> <nav id="mw-panel-toc" aria-label="Conteúdo" data-event-name="ui.sidebar-toc" class="mw-table-of-contents-container vector-toc-landmark"> <div id="vector-toc-pinned-container" class="vector-pinned-container"> <div id="vector-toc" class="vector-toc vector-pinnable-element"> <div class="vector-pinnable-header vector-toc-pinnable-header vector-pinnable-header-pinned" data-feature-name="toc-pinned" data-pinnable-element-id="vector-toc" > <h2 class="vector-pinnable-header-label">Conteúdo</h2> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-pin-button" data-event-name="pinnable-header.vector-toc.pin">mover para a barra lateral</button> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-unpin-button" data-event-name="pinnable-header.vector-toc.unpin">ocultar</button> </div> <ul class="vector-toc-contents" id="mw-panel-toc-list"> <li id="toc-mw-content-text" class="vector-toc-list-item vector-toc-level-1"> <a href="#" class="vector-toc-link"> <div class="vector-toc-text">Início</div> </a> </li> <li id="toc-Tipos" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Tipos"> <div class="vector-toc-text"> <span class="vector-toc-numb">1</span> <span>Tipos</span> </div> </a> <button aria-controls="toc-Tipos-sublist" class="cdx-button cdx-button--weight-quiet cdx-button--icon-only vector-toc-toggle"> <span class="vector-icon mw-ui-icon-wikimedia-expand"></span> <span>Alternar a subsecção Tipos</span> </button> <ul id="toc-Tipos-sublist" class="vector-toc-list"> <li id="toc-Codecs_sem_Perdas" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Codecs_sem_Perdas"> <div class="vector-toc-text"> <span class="vector-toc-numb">1.1</span> <span>Codecs sem Perdas</span> </div> </a> <ul id="toc-Codecs_sem_Perdas-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Codecs_com_Perdas" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Codecs_com_Perdas"> <div class="vector-toc-text"> <span class="vector-toc-numb">1.2</span> <span>Codecs com Perdas</span> </div> </a> <ul id="toc-Codecs_com_Perdas-sublist" class="vector-toc-list"> </ul> </li> </ul> </li> <li id="toc-Taxa_de_Bits" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Taxa_de_Bits"> <div class="vector-toc-text"> <span class="vector-toc-numb">2</span> <span>Taxa de Bits</span> </div> </a> <ul id="toc-Taxa_de_Bits-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Ver_também" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Ver_também"> <div class="vector-toc-text"> <span class="vector-toc-numb">3</span> <span>Ver também</span> </div> </a> <ul id="toc-Ver_também-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Referências" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Referências"> <div class="vector-toc-text"> <span class="vector-toc-numb">4</span> <span>Referências</span> </div> </a> <ul id="toc-Referências-sublist" class="vector-toc-list"> </ul> </li> </ul> </div> </div> </nav> </div> </div> <div class="mw-content-container"> <main id="content" class="mw-body"> <header class="mw-body-header vector-page-titlebar"> <nav aria-label="Conteúdo" class="vector-toc-landmark"> <div id="vector-page-titlebar-toc" class="vector-dropdown vector-page-titlebar-toc vector-button-flush-left" title="Índice" > <input type="checkbox" id="vector-page-titlebar-toc-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-vector-page-titlebar-toc" class="vector-dropdown-checkbox " aria-label="Alternar o índice" > <label id="vector-page-titlebar-toc-label" for="vector-page-titlebar-toc-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--icon-only " aria-hidden="true" ><span class="vector-icon mw-ui-icon-listBullet mw-ui-icon-wikimedia-listBullet"></span> <span class="vector-dropdown-label-text">Alternar o índice</span> </label> <div class="vector-dropdown-content"> <div id="vector-page-titlebar-toc-unpinned-container" class="vector-unpinned-container"> </div> </div> </div> </nav> <h1 id="firstHeading" class="firstHeading mw-first-heading"><span class="mw-page-title-main">Codec</span></h1> <div id="p-lang-btn" class="vector-dropdown mw-portlet mw-portlet-lang" > <input type="checkbox" id="p-lang-btn-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-p-lang-btn" class="vector-dropdown-checkbox mw-interlanguage-selector" aria-label="Ir para um artigo noutra língua. Disponível em 47 línguas" > <label id="p-lang-btn-label" for="p-lang-btn-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--action-progressive mw-portlet-lang-heading-47" aria-hidden="true" ><span class="vector-icon mw-ui-icon-language-progressive mw-ui-icon-wikimedia-language-progressive"></span> <span class="vector-dropdown-label-text">47 línguas</span> </label> <div class="vector-dropdown-content"> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li class="interlanguage-link interwiki-af mw-list-item"><a href="https://af.wikipedia.org/wiki/Kodek" title="Kodek — africanês" lang="af" hreflang="af" data-title="Kodek" data-language-autonym="Afrikaans" data-language-local-name="africanês" class="interlanguage-link-target"><span>Afrikaans</span></a></li><li class="interlanguage-link interwiki-ar mw-list-item"><a href="https://ar.wikipedia.org/wiki/%D9%85%D8%B1%D9%85%D8%B2_%D9%88%D9%81%D8%A7%D9%83_%D8%AA%D8%B1%D9%85%D9%8A%D8%B2" title="مرمز وفاك ترميز — árabe" lang="ar" hreflang="ar" data-title="مرمز وفاك ترميز" data-language-autonym="العربية" data-language-local-name="árabe" class="interlanguage-link-target"><span>العربية</span></a></li><li class="interlanguage-link interwiki-ast mw-list-item"><a href="https://ast.wikipedia.org/wiki/C%C3%B3dec" title="Códec — asturiano" lang="ast" hreflang="ast" data-title="Códec" data-language-autonym="Asturianu" data-language-local-name="asturiano" class="interlanguage-link-target"><span>Asturianu</span></a></li><li class="interlanguage-link interwiki-bg mw-list-item"><a href="https://bg.wikipedia.org/wiki/%D0%9A%D0%BE%D0%B4%D0%B5%D0%BA" title="Кодек — búlgaro" lang="bg" hreflang="bg" data-title="Кодек" data-language-autonym="Български" data-language-local-name="búlgaro" class="interlanguage-link-target"><span>Български</span></a></li><li class="interlanguage-link interwiki-bs mw-list-item"><a href="https://bs.wikipedia.org/wiki/Codec" title="Codec — bósnio" lang="bs" hreflang="bs" data-title="Codec" data-language-autonym="Bosanski" data-language-local-name="bósnio" class="interlanguage-link-target"><span>Bosanski</span></a></li><li class="interlanguage-link interwiki-ca mw-list-item"><a href="https://ca.wikipedia.org/wiki/C%C3%B2dec" title="Còdec — catalão" lang="ca" hreflang="ca" data-title="Còdec" data-language-autonym="Català" data-language-local-name="catalão" class="interlanguage-link-target"><span>Català</span></a></li><li class="interlanguage-link interwiki-cs mw-list-item"><a href="https://cs.wikipedia.org/wiki/Kodek" title="Kodek — checo" lang="cs" hreflang="cs" data-title="Kodek" data-language-autonym="Čeština" data-language-local-name="checo" class="interlanguage-link-target"><span>Čeština</span></a></li><li class="interlanguage-link interwiki-da mw-list-item"><a href="https://da.wikipedia.org/wiki/Codec" title="Codec — dinamarquês" lang="da" hreflang="da" data-title="Codec" data-language-autonym="Dansk" data-language-local-name="dinamarquês" class="interlanguage-link-target"><span>Dansk</span></a></li><li class="interlanguage-link interwiki-de mw-list-item"><a href="https://de.wikipedia.org/wiki/Codec" title="Codec — alemão" lang="de" hreflang="de" data-title="Codec" data-language-autonym="Deutsch" data-language-local-name="alemão" class="interlanguage-link-target"><span>Deutsch</span></a></li><li class="interlanguage-link interwiki-en mw-list-item"><a href="https://en.wikipedia.org/wiki/Codec" title="Codec — inglês" lang="en" hreflang="en" data-title="Codec" data-language-autonym="English" data-language-local-name="inglês" class="interlanguage-link-target"><span>English</span></a></li><li class="interlanguage-link interwiki-eo mw-list-item"><a href="https://eo.wikipedia.org/wiki/Kodeko" title="Kodeko — esperanto" lang="eo" hreflang="eo" data-title="Kodeko" data-language-autonym="Esperanto" data-language-local-name="esperanto" class="interlanguage-link-target"><span>Esperanto</span></a></li><li class="interlanguage-link interwiki-es mw-list-item"><a href="https://es.wikipedia.org/wiki/C%C3%B3dec" title="Códec — espanhol" lang="es" hreflang="es" data-title="Códec" data-language-autonym="Español" data-language-local-name="espanhol" class="interlanguage-link-target"><span>Español</span></a></li><li class="interlanguage-link interwiki-et mw-list-item"><a href="https://et.wikipedia.org/wiki/Koodek" title="Koodek — estónio" lang="et" hreflang="et" data-title="Koodek" data-language-autonym="Eesti" data-language-local-name="estónio" class="interlanguage-link-target"><span>Eesti</span></a></li><li class="interlanguage-link interwiki-eu mw-list-item"><a href="https://eu.wikipedia.org/wiki/Codec" title="Codec — basco" lang="eu" hreflang="eu" data-title="Codec" data-language-autonym="Euskara" data-language-local-name="basco" class="interlanguage-link-target"><span>Euskara</span></a></li><li class="interlanguage-link interwiki-fa mw-list-item"><a href="https://fa.wikipedia.org/wiki/%DA%A9%D8%AF%DA%A9" title="کدک — persa" lang="fa" hreflang="fa" data-title="کدک" data-language-autonym="فارسی" data-language-local-name="persa" class="interlanguage-link-target"><span>فارسی</span></a></li><li class="interlanguage-link interwiki-fi mw-list-item"><a href="https://fi.wikipedia.org/wiki/Koodekki" title="Koodekki — finlandês" lang="fi" hreflang="fi" data-title="Koodekki" data-language-autonym="Suomi" data-language-local-name="finlandês" class="interlanguage-link-target"><span>Suomi</span></a></li><li class="interlanguage-link interwiki-fr mw-list-item"><a href="https://fr.wikipedia.org/wiki/Codec" title="Codec — francês" lang="fr" hreflang="fr" data-title="Codec" data-language-autonym="Français" data-language-local-name="francês" class="interlanguage-link-target"><span>Français</span></a></li><li class="interlanguage-link interwiki-ga mw-list-item"><a href="https://ga.wikipedia.org/wiki/Codec" title="Codec — irlandês" lang="ga" hreflang="ga" data-title="Codec" data-language-autonym="Gaeilge" data-language-local-name="irlandês" class="interlanguage-link-target"><span>Gaeilge</span></a></li><li class="interlanguage-link interwiki-gl mw-list-item"><a href="https://gl.wikipedia.org/wiki/C%C3%B3dec" title="Códec — galego" lang="gl" hreflang="gl" data-title="Códec" data-language-autonym="Galego" data-language-local-name="galego" class="interlanguage-link-target"><span>Galego</span></a></li><li class="interlanguage-link interwiki-he mw-list-item"><a href="https://he.wikipedia.org/wiki/%D7%A7%D7%95%D7%93%D7%A7" title="קודק — hebraico" lang="he" hreflang="he" data-title="קודק" data-language-autonym="עברית" data-language-local-name="hebraico" class="interlanguage-link-target"><span>עברית</span></a></li><li class="interlanguage-link interwiki-hr mw-list-item"><a href="https://hr.wikipedia.org/wiki/Kodek" title="Kodek — croata" lang="hr" hreflang="hr" data-title="Kodek" data-language-autonym="Hrvatski" data-language-local-name="croata" class="interlanguage-link-target"><span>Hrvatski</span></a></li><li class="interlanguage-link interwiki-hu mw-list-item"><a href="https://hu.wikipedia.org/wiki/Kodek" title="Kodek — húngaro" lang="hu" hreflang="hu" data-title="Kodek" data-language-autonym="Magyar" data-language-local-name="húngaro" class="interlanguage-link-target"><span>Magyar</span></a></li><li class="interlanguage-link interwiki-id mw-list-item"><a href="https://id.wikipedia.org/wiki/Kodek" title="Kodek — indonésio" lang="id" hreflang="id" data-title="Kodek" data-language-autonym="Bahasa Indonesia" data-language-local-name="indonésio" class="interlanguage-link-target"><span>Bahasa Indonesia</span></a></li><li class="interlanguage-link interwiki-it mw-list-item"><a href="https://it.wikipedia.org/wiki/Codec" title="Codec — italiano" lang="it" hreflang="it" data-title="Codec" data-language-autonym="Italiano" data-language-local-name="italiano" class="interlanguage-link-target"><span>Italiano</span></a></li><li class="interlanguage-link interwiki-ja mw-list-item"><a href="https://ja.wikipedia.org/wiki/%E3%82%B3%E3%83%BC%E3%83%87%E3%83%83%E3%82%AF" title="コーデック — japonês" lang="ja" hreflang="ja" data-title="コーデック" data-language-autonym="日本語" data-language-local-name="japonês" class="interlanguage-link-target"><span>日本語</span></a></li><li class="interlanguage-link interwiki-kk mw-list-item"><a href="https://kk.wikipedia.org/wiki/%D0%9A%D0%BE%D0%B4%D0%B5%D0%BA" title="Кодек — cazaque" lang="kk" hreflang="kk" data-title="Кодек" data-language-autonym="Қазақша" data-language-local-name="cazaque" class="interlanguage-link-target"><span>Қазақша</span></a></li><li class="interlanguage-link interwiki-ko mw-list-item"><a href="https://ko.wikipedia.org/wiki/%EC%BD%94%EB%8D%B1" title="코덱 — coreano" lang="ko" hreflang="ko" data-title="코덱" data-language-autonym="한국어" data-language-local-name="coreano" class="interlanguage-link-target"><span>한국어</span></a></li><li class="interlanguage-link interwiki-lmo mw-list-item"><a href="https://lmo.wikipedia.org/wiki/Codec" title="Codec — lombardo" lang="lmo" hreflang="lmo" data-title="Codec" data-language-autonym="Lombard" data-language-local-name="lombardo" class="interlanguage-link-target"><span>Lombard</span></a></li><li class="interlanguage-link interwiki-lt mw-list-item"><a href="https://lt.wikipedia.org/wiki/Kodekas" title="Kodekas — lituano" lang="lt" hreflang="lt" data-title="Kodekas" data-language-autonym="Lietuvių" data-language-local-name="lituano" class="interlanguage-link-target"><span>Lietuvių</span></a></li><li class="interlanguage-link interwiki-mk mw-list-item"><a href="https://mk.wikipedia.org/wiki/%D0%9A%D0%BE%D0%B4%D0%B5%D0%BA" title="Кодек — macedónio" lang="mk" hreflang="mk" data-title="Кодек" data-language-autonym="Македонски" data-language-local-name="macedónio" class="interlanguage-link-target"><span>Македонски</span></a></li><li class="interlanguage-link interwiki-ml mw-list-item"><a href="https://ml.wikipedia.org/wiki/%E0%B4%95%E0%B5%8B%E0%B4%A1%E0%B5%86%E0%B4%95%E0%B5%8D" title="കോഡെക് — malaiala" lang="ml" hreflang="ml" data-title="കോഡെക്" data-language-autonym="മലയാളം" data-language-local-name="malaiala" class="interlanguage-link-target"><span>മലയാളം</span></a></li><li class="interlanguage-link interwiki-nl mw-list-item"><a href="https://nl.wikipedia.org/wiki/Codec" title="Codec — neerlandês" lang="nl" hreflang="nl" data-title="Codec" data-language-autonym="Nederlands" data-language-local-name="neerlandês" class="interlanguage-link-target"><span>Nederlands</span></a></li><li class="interlanguage-link interwiki-nn mw-list-item"><a href="https://nn.wikipedia.org/wiki/Kodek" title="Kodek — norueguês nynorsk" lang="nn" hreflang="nn" data-title="Kodek" data-language-autonym="Norsk nynorsk" data-language-local-name="norueguês nynorsk" class="interlanguage-link-target"><span>Norsk nynorsk</span></a></li><li class="interlanguage-link interwiki-no mw-list-item"><a href="https://no.wikipedia.org/wiki/Kodek" title="Kodek — norueguês bokmål" lang="nb" hreflang="nb" data-title="Kodek" data-language-autonym="Norsk bokmål" data-language-local-name="norueguês bokmål" class="interlanguage-link-target"><span>Norsk bokmål</span></a></li><li class="interlanguage-link interwiki-pl mw-list-item"><a href="https://pl.wikipedia.org/wiki/Kodek" title="Kodek — polaco" lang="pl" hreflang="pl" data-title="Kodek" data-language-autonym="Polski" data-language-local-name="polaco" class="interlanguage-link-target"><span>Polski</span></a></li><li class="interlanguage-link interwiki-pms mw-list-item"><a href="https://pms.wikipedia.org/wiki/Codec" title="Codec — Piedmontese" lang="pms" hreflang="pms" data-title="Codec" data-language-autonym="Piemontèis" data-language-local-name="Piedmontese" class="interlanguage-link-target"><span>Piemontèis</span></a></li><li class="interlanguage-link interwiki-ro mw-list-item"><a href="https://ro.wikipedia.org/wiki/Codec" title="Codec — romeno" lang="ro" hreflang="ro" data-title="Codec" data-language-autonym="Română" data-language-local-name="romeno" class="interlanguage-link-target"><span>Română</span></a></li><li class="interlanguage-link interwiki-ru mw-list-item"><a href="https://ru.wikipedia.org/wiki/%D0%9A%D0%BE%D0%B4%D0%B5%D0%BA" title="Кодек — russo" lang="ru" hreflang="ru" data-title="Кодек" data-language-autonym="Русский" data-language-local-name="russo" class="interlanguage-link-target"><span>Русский</span></a></li><li class="interlanguage-link interwiki-sk mw-list-item"><a href="https://sk.wikipedia.org/wiki/Kodek" title="Kodek — eslovaco" lang="sk" hreflang="sk" data-title="Kodek" data-language-autonym="Slovenčina" data-language-local-name="eslovaco" class="interlanguage-link-target"><span>Slovenčina</span></a></li><li class="interlanguage-link interwiki-sr mw-list-item"><a href="https://sr.wikipedia.org/wiki/%D0%9A%D0%BE%D0%B4%D0%B5%D0%BA" title="Кодек — sérvio" lang="sr" hreflang="sr" data-title="Кодек" data-language-autonym="Српски / srpski" data-language-local-name="sérvio" class="interlanguage-link-target"><span>Српски / srpski</span></a></li><li class="interlanguage-link interwiki-sv mw-list-item"><a href="https://sv.wikipedia.org/wiki/Kodek" title="Kodek — sueco" lang="sv" hreflang="sv" data-title="Kodek" data-language-autonym="Svenska" data-language-local-name="sueco" class="interlanguage-link-target"><span>Svenska</span></a></li><li class="interlanguage-link interwiki-ta mw-list-item"><a href="https://ta.wikipedia.org/wiki/%E0%AE%95%E0%AF%8B%E0%AE%9F%E0%AF%86%E0%AE%95%E0%AF%8D" title="கோடெக் — tâmil" lang="ta" hreflang="ta" data-title="கோடெக்" data-language-autonym="தமிழ்" data-language-local-name="tâmil" class="interlanguage-link-target"><span>தமிழ்</span></a></li><li class="interlanguage-link interwiki-th mw-list-item"><a href="https://th.wikipedia.org/wiki/%E0%B9%82%E0%B8%84%E0%B9%80%E0%B8%94%E0%B8%81" title="โคเดก — tailandês" lang="th" hreflang="th" data-title="โคเดก" data-language-autonym="ไทย" data-language-local-name="tailandês" class="interlanguage-link-target"><span>ไทย</span></a></li><li class="interlanguage-link interwiki-tr mw-list-item"><a href="https://tr.wikipedia.org/wiki/%C3%87%C3%B6z%C3%BCc%C3%BC_(bilgisayar)" title="Çözücü (bilgisayar) — turco" lang="tr" hreflang="tr" data-title="Çözücü (bilgisayar)" data-language-autonym="Türkçe" data-language-local-name="turco" class="interlanguage-link-target"><span>Türkçe</span></a></li><li class="interlanguage-link interwiki-uk mw-list-item"><a href="https://uk.wikipedia.org/wiki/%D0%9A%D0%BE%D0%B4%D0%B5%D0%BA" title="Кодек — ucraniano" lang="uk" hreflang="uk" data-title="Кодек" data-language-autonym="Українська" data-language-local-name="ucraniano" class="interlanguage-link-target"><span>Українська</span></a></li><li class="interlanguage-link interwiki-vi mw-list-item"><a href="https://vi.wikipedia.org/wiki/Codec" title="Codec — vietnamita" lang="vi" hreflang="vi" data-title="Codec" data-language-autonym="Tiếng Việt" data-language-local-name="vietnamita" class="interlanguage-link-target"><span>Tiếng Việt</span></a></li><li class="interlanguage-link interwiki-zh mw-list-item"><a href="https://zh.wikipedia.org/wiki/%E7%BC%96%E8%A7%A3%E7%A0%81%E5%99%A8" title="编解码器 — chinês" lang="zh" hreflang="zh" data-title="编解码器" data-language-autonym="中文" data-language-local-name="chinês" class="interlanguage-link-target"><span>中文</span></a></li> </ul> <div class="after-portlet after-portlet-lang"><span class="wb-langlinks-edit wb-langlinks-link"><a href="https://www.wikidata.org/wiki/Special:EntityPage/Q184748#sitelinks-wikipedia" title="Editar hiperligações interlínguas" class="wbc-editpage">Editar hiperligações</a></span></div> </div> </div> </div> </header> <div class="vector-page-toolbar"> <div class="vector-page-toolbar-container"> <div id="left-navigation"> <nav aria-label="Espaços nominais"> <div id="p-associated-pages" class="vector-menu vector-menu-tabs mw-portlet mw-portlet-associated-pages" > <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="ca-nstab-main" class="selected vector-tab-noicon mw-list-item"><a href="/wiki/Codec" title="Ver a página de conteúdo [c]" accesskey="c"><span>Artigo</span></a></li><li id="ca-talk" class="vector-tab-noicon mw-list-item"><a href="/wiki/Discuss%C3%A3o:Codec" rel="discussion" title="Discussão sobre o conteúdo da página [t]" accesskey="t"><span>Discussão</span></a></li> </ul> </div> </div> <div id="vector-variants-dropdown" class="vector-dropdown emptyPortlet" > <input type="checkbox" id="vector-variants-dropdown-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-vector-variants-dropdown" class="vector-dropdown-checkbox " aria-label="Mudar a variante da língua" > <label id="vector-variants-dropdown-label" for="vector-variants-dropdown-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet" aria-hidden="true" ><span class="vector-dropdown-label-text">português</span> </label> <div class="vector-dropdown-content"> <div id="p-variants" class="vector-menu mw-portlet mw-portlet-variants emptyPortlet" > <div class="vector-menu-content"> <ul class="vector-menu-content-list"> </ul> </div> </div> </div> </div> </nav> </div> <div id="right-navigation" class="vector-collapsible"> <nav aria-label="Vistas"> <div id="p-views" class="vector-menu vector-menu-tabs mw-portlet mw-portlet-views" > <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="ca-view" class="selected vector-tab-noicon mw-list-item"><a href="/wiki/Codec"><span>Ler</span></a></li><li id="ca-ve-edit" class="vector-tab-noicon mw-list-item"><a href="/w/index.php?title=Codec&veaction=edit" title="Editar esta página [v]" accesskey="v"><span>Editar</span></a></li><li id="ca-edit" class="collapsible vector-tab-noicon mw-list-item"><a href="/w/index.php?title=Codec&action=edit" title="Editar o código-fonte desta página [e]" accesskey="e"><span>Editar código-fonte</span></a></li><li id="ca-history" class="vector-tab-noicon mw-list-item"><a href="/w/index.php?title=Codec&action=history" title="Edições anteriores desta página. [h]" accesskey="h"><span>Ver histórico</span></a></li> </ul> </div> </div> </nav> <nav class="vector-page-tools-landmark" aria-label="Ferramentas de página"> <div id="vector-page-tools-dropdown" class="vector-dropdown vector-page-tools-dropdown" > <input type="checkbox" id="vector-page-tools-dropdown-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-vector-page-tools-dropdown" class="vector-dropdown-checkbox " aria-label="Ferramentas" > <label id="vector-page-tools-dropdown-label" for="vector-page-tools-dropdown-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet" aria-hidden="true" ><span class="vector-dropdown-label-text">Ferramentas</span> </label> <div class="vector-dropdown-content"> <div id="vector-page-tools-unpinned-container" class="vector-unpinned-container"> <div id="vector-page-tools" class="vector-page-tools vector-pinnable-element"> <div class="vector-pinnable-header vector-page-tools-pinnable-header vector-pinnable-header-unpinned" data-feature-name="page-tools-pinned" data-pinnable-element-id="vector-page-tools" data-pinned-container-id="vector-page-tools-pinned-container" data-unpinned-container-id="vector-page-tools-unpinned-container" > <div class="vector-pinnable-header-label">Ferramentas</div> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-pin-button" data-event-name="pinnable-header.vector-page-tools.pin">mover para a barra lateral</button> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-unpin-button" data-event-name="pinnable-header.vector-page-tools.unpin">ocultar</button> </div> <div id="p-cactions" class="vector-menu mw-portlet mw-portlet-cactions emptyPortlet vector-has-collapsible-items" title="Mais opções" > <div class="vector-menu-heading"> Operações </div> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="ca-more-view" class="selected vector-more-collapsible-item mw-list-item"><a href="/wiki/Codec"><span>Ler</span></a></li><li id="ca-more-ve-edit" class="vector-more-collapsible-item mw-list-item"><a href="/w/index.php?title=Codec&veaction=edit" title="Editar esta página [v]" accesskey="v"><span>Editar</span></a></li><li id="ca-more-edit" class="collapsible vector-more-collapsible-item mw-list-item"><a href="/w/index.php?title=Codec&action=edit" title="Editar o código-fonte desta página [e]" accesskey="e"><span>Editar código-fonte</span></a></li><li id="ca-more-history" class="vector-more-collapsible-item mw-list-item"><a href="/w/index.php?title=Codec&action=history"><span>Ver histórico</span></a></li> </ul> </div> </div> <div id="p-tb" class="vector-menu mw-portlet mw-portlet-tb" > <div class="vector-menu-heading"> Geral </div> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="t-whatlinkshere" class="mw-list-item"><a href="/wiki/Especial:P%C3%A1ginas_afluentes/Codec" title="Lista de todas as páginas que contêm hiperligações para esta [j]" accesskey="j"><span>Páginas afluentes</span></a></li><li id="t-recentchangeslinked" class="mw-list-item"><a href="/wiki/Especial:Altera%C3%A7%C3%B5es_relacionadas/Codec" rel="nofollow" title="Mudanças recentes nas páginas para as quais esta contém hiperligações [k]" accesskey="k"><span>Alterações relacionadas</span></a></li><li id="t-upload" class="mw-list-item"><a href="//pt.wikipedia.org/wiki/Wikipedia:Carregar_ficheiro" title="Carregar ficheiros [u]" accesskey="u"><span>Carregar ficheiro</span></a></li><li id="t-permalink" class="mw-list-item"><a href="/w/index.php?title=Codec&oldid=64844197" title="Hiperligação permanente para esta revisão desta página"><span>Hiperligação permanente</span></a></li><li id="t-info" class="mw-list-item"><a href="/w/index.php?title=Codec&action=info" title="Mais informações sobre esta página"><span>Informações da página</span></a></li><li id="t-cite" class="mw-list-item"><a href="/w/index.php?title=Especial:Citar&page=Codec&id=64844197&wpFormIdentifier=titleform" title="Informação sobre como citar esta página"><span>Citar esta página</span></a></li><li id="t-urlshortener" class="mw-list-item"><a href="/w/index.php?title=Especial:UrlShortener&url=https%3A%2F%2Fpt.wikipedia.org%2Fwiki%2FCodec"><span>Obter URL encurtado</span></a></li><li id="t-urlshortener-qrcode" class="mw-list-item"><a href="/w/index.php?title=Especial:QrCode&url=https%3A%2F%2Fpt.wikipedia.org%2Fwiki%2FCodec"><span>Descarregar código QR</span></a></li> </ul> </div> </div> <div id="p-coll-print_export" class="vector-menu mw-portlet mw-portlet-coll-print_export" > <div class="vector-menu-heading"> Imprimir/exportar </div> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="coll-create_a_book" class="mw-list-item"><a href="/w/index.php?title=Especial:Livro&bookcmd=book_creator&referer=Codec"><span>Criar um livro</span></a></li><li id="coll-download-as-rl" class="mw-list-item"><a href="/w/index.php?title=Especial:DownloadAsPdf&page=Codec&action=show-download-screen"><span>Descarregar como PDF</span></a></li><li id="t-print" class="mw-list-item"><a href="/w/index.php?title=Codec&printable=yes" title="Versão para impressão desta página [p]" accesskey="p"><span>Versão para impressão</span></a></li> </ul> </div> </div> <div id="p-wikibase-otherprojects" class="vector-menu mw-portlet mw-portlet-wikibase-otherprojects" > <div class="vector-menu-heading"> Noutros projetos </div> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li class="wb-otherproject-link wb-otherproject-commons mw-list-item"><a href="https://commons.wikimedia.org/wiki/Category:Codecs" hreflang="en"><span>Wikimedia Commons</span></a></li><li id="t-wikibase" class="wb-otherproject-link wb-otherproject-wikibase-dataitem mw-list-item"><a href="https://www.wikidata.org/wiki/Special:EntityPage/Q184748" title="Hiperligação para o elemento do repositório de dados [g]" accesskey="g"><span>Elemento Wikidata</span></a></li> </ul> </div> </div> </div> </div> </div> </div> </nav> </div> </div> </div> <div class="vector-column-end"> <div class="vector-sticky-pinned-container"> <nav class="vector-page-tools-landmark" aria-label="Ferramentas de página"> <div id="vector-page-tools-pinned-container" class="vector-pinned-container"> </div> </nav> <nav class="vector-appearance-landmark" aria-label="Aspeto"> <div id="vector-appearance-pinned-container" class="vector-pinned-container"> <div id="vector-appearance" class="vector-appearance vector-pinnable-element"> <div class="vector-pinnable-header vector-appearance-pinnable-header vector-pinnable-header-pinned" data-feature-name="appearance-pinned" data-pinnable-element-id="vector-appearance" data-pinned-container-id="vector-appearance-pinned-container" data-unpinned-container-id="vector-appearance-unpinned-container" > <div class="vector-pinnable-header-label">Aspeto</div> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-pin-button" data-event-name="pinnable-header.vector-appearance.pin">mover para a barra lateral</button> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-unpin-button" data-event-name="pinnable-header.vector-appearance.unpin">ocultar</button> </div> </div> </div> </nav> </div> </div> <div id="bodyContent" class="vector-body" aria-labelledby="firstHeading" data-mw-ve-target-container> <div class="vector-body-before-content"> <div class="mw-indicators"> </div> <div id="siteSub" class="noprint">Origem: Wikipédia, a enciclopédia livre.</div> </div> <div id="contentSub"><div id="mw-content-subtitle"></div></div> <div id="mw-content-text" class="mw-body-content"><div class="mw-content-ltr mw-parser-output" lang="pt" dir="ltr"><div class="hatnote"><span typeof="mw:File"><span><img src="//upload.wikimedia.org/wikipedia/commons/thumb/4/4a/Disambig_grey.svg/20px-Disambig_grey.svg.png" decoding="async" width="20" height="15" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/4/4a/Disambig_grey.svg/30px-Disambig_grey.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/4/4a/Disambig_grey.svg/40px-Disambig_grey.svg.png 2x" data-file-width="260" data-file-height="200" /></span></span> <b>Nota:</b> Para a empresa, veja <a href="/wiki/Companhia_de_Desenvolvimento_Econ%C3%B4mico_do_Par%C3%A1" title="Companhia de Desenvolvimento Econômico do Pará">Companhia de Desenvolvimento Econômico do Pará</a>.</div> <style data-mw-deduplicate="TemplateStyles:r68971778">.mw-parser-output .ambox{border:1px solid #a2a9b1;border-left:10px solid #36c;background-color:#fbfbfb;box-sizing:border-box}.mw-parser-output .ambox+link+.ambox,.mw-parser-output .ambox+link+style+.ambox,.mw-parser-output .ambox+link+link+.ambox,.mw-parser-output .ambox+.mw-empty-elt+link+.ambox,.mw-parser-output .ambox+.mw-empty-elt+link+style+.ambox,.mw-parser-output .ambox+.mw-empty-elt+link+link+.ambox{margin-top:-1px}html body.mediawiki .mw-parser-output .ambox.mbox-small-left{margin:4px 1em 4px 0;overflow:hidden;width:238px;border-collapse:collapse;font-size:88%;line-height:1.25em}.mw-parser-output .ambox-speedy{border-left:10px solid #b32424;background-color:#fee7e6}.mw-parser-output .ambox-delete{border-left:10px solid #b32424}.mw-parser-output .ambox-content{border-left:10px solid #f28500}.mw-parser-output .ambox-style{border-left:10px solid #fc3}.mw-parser-output .ambox-move{border-left:10px solid #9932cc}.mw-parser-output .ambox-protection{border-left:10px solid #a2a9b1}.mw-parser-output .ambox .mbox-text{border:none;padding:0.25em 0.5em;width:100%}.mw-parser-output .ambox .mbox-image{border:none;padding:2px 0 2px 0.5em;text-align:center}.mw-parser-output .ambox .mbox-imageright{border:none;padding:2px 0.5em 2px 0;text-align:center}.mw-parser-output .ambox .mbox-empty-cell{border:none;padding:0;width:1px}.mw-parser-output .ambox .mbox-image-div{width:52px}@media(min-width:720px){.mw-parser-output .ambox{margin:0 10%}}.mw-parser-output .cmbox{margin:3px 0;border-collapse:collapse;border:1px solid #a2a9b1;background-color:#dfe8ff;box-sizing:border-box;color:var(--color-base)}.mw-parser-output .cmbox-speedy{border:4px solid #b32424;background-color:#ffdbdb}.mw-parser-output .cmbox-delete{background-color:#ffdbdb}.mw-parser-output .cmbox-content{background-color:#ffe7ce}.mw-parser-output .cmbox-style{background-color:#fff9db}.mw-parser-output .cmbox-move{background-color:#e4d8ff}.mw-parser-output .cmbox-protection{background-color:#efefe1}.mw-parser-output .cmbox .mbox-text{border:none;padding:0.25em 0.9em;width:100%}.mw-parser-output .cmbox .mbox-image{border:none;padding:2px 0 2px 0.9em;text-align:center}.mw-parser-output .cmbox .mbox-imageright{border:none;padding:2px 0.9em 2px 0;text-align:center}.mw-parser-output .cmbox .mbox-empty-cell{border:none;padding:0;width:1px}.mw-parser-output .cmbox .mbox-invalid-type{text-align:center}@media(min-width:720px){.mw-parser-output .cmbox{margin:3px 10%}}@media screen{html.skin-theme-clientpref-night .mw-parser-output .cmbox{background-color:#0d1a27}html.skin-theme-clientpref-night .mw-parser-output .cmbox-speedy,html.skin-theme-clientpref-night .mw-parser-output .cmbox-delete{background-color:#300}html.skin-theme-clientpref-night .mw-parser-output .cmbox-content{background-color:#331a00}html.skin-theme-clientpref-night .mw-parser-output .cmbox-style{background-color:#332b00}html.skin-theme-clientpref-night .mw-parser-output .cmbox-move{background-color:#08001a}html.skin-theme-clientpref-night .mw-parser-output .cmbox-protection{background-color:#212112}}@media screen and (prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output .cmbox{background-color:#0d1a27}html.skin-theme-clientpref-os .mw-parser-output .cmbox-speedy,html.skin-theme-clientpref-os .mw-parser-output .cmbox-delete{background-color:#300}html.skin-theme-clientpref-os .mw-parser-output .cmbox-content{background-color:#331a00}html.skin-theme-clientpref-os .mw-parser-output .cmbox-style{background-color:#332b00}html.skin-theme-clientpref-os .mw-parser-output .cmbox-move{background-color:#08001a}html.skin-theme-clientpref-os .mw-parser-output .cmbox-protection{background-color:#212112}}.mw-parser-output .fmbox{clear:both;margin:0.2em 0;width:100%;border:1px solid #a2a9b1;background-color:var(--background-color-interactive-subtle,#f8f9fa);box-sizing:border-box;color:var(--color-base,#202122)}.mw-parser-output .fmbox-warning{border:1px solid #bb7070;background-color:#ffdbdb}.mw-parser-output .fmbox-editnotice{background-color:transparent}.mw-parser-output .fmbox .mbox-text{border:none;padding:0.25em 0.9em;width:100%}.mw-parser-output .fmbox .mbox-image{border:none;padding:2px 0 2px 0.9em;text-align:center}.mw-parser-output .fmbox .mbox-imageright{border:none;padding:2px 0.9em 2px 0;text-align:center}.mw-parser-output .fmbox .mbox-invalid-type{text-align:center}@media screen{html.skin-theme-clientpref-night .mw-parser-output .fmbox-warning{background-color:#683131}}@media screen and (prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output .fmbox-warning{background-color:#683131}}.mw-parser-output .imbox{margin:4px 0;border-collapse:collapse;border:3px solid #36c;background-color:var(--background-color-interactive-subtle,#f8f9fa);box-sizing:border-box}.mw-parser-output .imbox .mbox-text .imbox{margin:0 -0.5em;display:block}.mw-parser-output .imbox-speedy{border:3px solid #b32424;background-color:#fee7e6}.mw-parser-output .imbox-delete{border:3px solid #b32424}.mw-parser-output .imbox-content{border:3px solid #f28500}.mw-parser-output .imbox-style{border:3px solid #fc3}.mw-parser-output .imbox-move{border:3px solid #9932cc}.mw-parser-output .imbox-protection{border:3px solid #a2a9b1}.mw-parser-output .imbox-license{border:3px solid #88a}.mw-parser-output .imbox-featured{border:3px solid #cba135}.mw-parser-output .imbox .mbox-text{border:none;padding:0.25em 0.9em;width:100%}.mw-parser-output .imbox .mbox-image{border:none;padding:2px 0 2px 0.9em;text-align:center}.mw-parser-output .imbox .mbox-imageright{border:none;padding:2px 0.9em 2px 0;text-align:center}.mw-parser-output .imbox .mbox-empty-cell{border:none;padding:0;width:1px}.mw-parser-output .imbox .mbox-invalid-type{text-align:center}@media(min-width:720px){.mw-parser-output .imbox{margin:4px 10%}}@media screen{html.skin-theme-clientpref-night .mw-parser-output .imbox-speedy{background-color:#310402}}@media screen and (prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output .imbox-speedy{background-color:#310402}}.mw-parser-output .ombox{margin:4px 0;border-collapse:collapse;background-color:var(--background-color-neutral-subtle,#f8f9fa);box-sizing:border-box;border:1px solid #a2a9b1;color:var(--color-base,#202122)}.mw-parser-output .ombox.mbox-small{font-size:88%;line-height:1.25em}.mw-parser-output .ombox-speedy{border:2px solid #b32424;background-color:#fee7e6}.mw-parser-output .ombox-delete{border:2px solid #b32424}.mw-parser-output .ombox-content{border:1px solid #f28500}.mw-parser-output .ombox-style{border:1px solid #fc3}.mw-parser-output .ombox-move{border:1px solid #9932cc}.mw-parser-output .ombox-protection{border:2px solid #a2a9b1}.mw-parser-output .ombox .mbox-text{border:none;padding:0.25em 0.9em;width:100%}.mw-parser-output .ombox .mbox-image{border:none;padding:2px 0 2px 0.9em;text-align:center}.mw-parser-output .ombox .mbox-imageright{border:none;padding:2px 0.9em 2px 0;text-align:center}.mw-parser-output .ombox .mbox-empty-cell{border:none;padding:0;width:1px}.mw-parser-output .ombox .mbox-invalid-type{text-align:center}@media(min-width:720px){.mw-parser-output .ombox{margin:4px 10%}.mw-parser-output .ombox.mbox-small{clear:right;float:right;margin:4px 0 4px 1em;width:238px}}body.skin--responsive .mw-parser-output table.ombox img{max-width:none!important}@media screen{html.skin-theme-clientpref-night .mw-parser-output .ombox-speedy{background-color:#310402}}@media screen and (prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output .ombox-speedy{background-color:#310402}}.mw-parser-output .tmbox{margin:4px 0;border-collapse:collapse;border:1px solid #c0c090;background-color:#f8eaba;box-sizing:border-box}.mw-parser-output .tmbox.mbox-small{font-size:88%;line-height:1.25em}.mw-parser-output .tmbox-speedy{border:2px solid #b32424;background-color:#fee7e6}.mw-parser-output .tmbox-delete{border:2px solid #b32424}.mw-parser-output .tmbox-content{border:1px solid #c0c090}.mw-parser-output .tmbox-style{border:2px solid #fc3}.mw-parser-output .tmbox-move{border:2px solid #9932cc}.mw-parser-output .tmbox .mbox-text{border:none;padding:0.25em 0.9em;width:100%}.mw-parser-output .tmbox .mbox-image{border:none;padding:2px 0 2px 0.9em;text-align:center}.mw-parser-output .tmbox .mbox-imageright{border:none;padding:2px 0.9em 2px 0;text-align:center}.mw-parser-output .tmbox .mbox-empty-cell{border:none;padding:0;width:1px}.mw-parser-output .tmbox .mbox-invalid-type{text-align:center}@media(min-width:720px){.mw-parser-output .tmbox{margin:4px 10%}.mw-parser-output .tmbox.mbox-small{clear:right;float:right;margin:4px 0 4px 1em;width:238px}}@media screen{html.skin-theme-clientpref-night .mw-parser-output .tmbox{background-color:#2e2505}html.skin-theme-clientpref-night .mw-parser-output .tmbox-speedy{background-color:#310402}}@media screen and (prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output .tmbox{background-color:#2e2505}html.skin-theme-clientpref-os .mw-parser-output .tmbox-speedy{background-color:#310402}}body.skin--responsive .mw-parser-output table.tmbox img{max-width:none!important}</style><table class="box-Fontes_primárias plainlinks metadata ambox ambox-content ambox-content" role="presentation"><tbody><tr><td class="mbox-image"><div style="width:52px"><span typeof="mw:File"><a href="/wiki/Ficheiro:Question_book.svg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/9/97/Question_book.svg/40px-Question_book.svg.png" decoding="async" width="40" height="32" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/9/97/Question_book.svg/60px-Question_book.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/9/97/Question_book.svg/120px-Question_book.svg.png 2x" data-file-width="252" data-file-height="199" /></a></span></div></td><td class="mbox-text"><div class="mbox-text-span">Este artigo ou secção <b>necessita de <a href="/wiki/Wikip%C3%A9dia:Verificabilidade" title="Wikipédia:Verificabilidade">referências</a> de fontes secundárias <a href="/wiki/Wikip%C3%A9dia:Fontes_confi%C3%A1veis" title="Wikipédia:Fontes confiáveis">confiáveis</a> e <a href="/wiki/Wikip%C3%A9dia:Fontes_independentes" title="Wikipédia:Fontes independentes">independentes</a></b>.<span class="hide-when-compact"> <a href="/wiki/Wikip%C3%A9dia:Nada_de_pesquisa_in%C3%A9dita#Fontes_primárias_e_secundárias" title="Wikipédia:Nada de pesquisa inédita">Fontes primárias</a>, ou com <a href="/wiki/Wikip%C3%A9dia:Conflito_de_interesse" title="Wikipédia:Conflito de interesse">conflitos de interesse</a>, <a href="/wiki/Wikip%C3%A9dia:A_Wikip%C3%A9dia_%C3%A9_uma_fonte_terci%C3%A1ria" title="Wikipédia:A Wikipédia é uma fonte terciária">não são adequadas para verbetes enciclopédicos</a>. Ajude a incluir <a href="/wiki/Wikip%C3%A9dia:Livro_de_estilo/Cite_as_fontes" title="Wikipédia:Livro de estilo/Cite as fontes">referências</a>.—<small><i>Encontre fontes:</i> <span class="plainlinks"><a rel="nofollow" class="external text" href="https://wikipedialibrary.wmflabs.org/">ABW</a>  •  <a rel="nofollow" class="external text" href="https://www.periodicos.capes.gov.br">CAPES</a>  •  <a rel="nofollow" class="external text" href="https://www.google.com/search?as_eq=wikipedia&as_epq=Codec">Google</a> (<a rel="nofollow" class="external text" href="https://www.google.com/search?hl=pt&tbm=nws&q=Codec&oq=Codec">notícias</a> • <a rel="nofollow" class="external text" href="http://books.google.com/books?&as_brr=0&as_epq=Codec">livros</a> • <a rel="nofollow" class="external text" href="https://scholar.google.com/scholar?hl=pt&q=Codec">acadêmico</a>)</span></small></span> <small class="date-container"><i>(<span class="date">Março de 2012</span>)</i></small></div></td></tr></tbody></table> <p><b>Codec</b> é o <a href="/wiki/Acr%C3%B3nimo" title="Acrónimo">acrônimo</a> de <b>codificador/decodificador</b>, dispositivo de <i><a href="/wiki/Hardware" title="Hardware">hardware</a></i> ou <i><a href="/wiki/Software" title="Software">software</a></i> que codifica/decodifica sinais. </p> <meta property="mw:PageProp/toc" /> <div class="mw-heading mw-heading2"><h2 id="Tipos">Tipos</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Codec&veaction=edit&section=1" title="Editar secção: Tipos" class="mw-editsection-visualeditor"><span>editar</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Codec&action=edit&section=1" title="Editar código-fonte da secção: Tipos"><span>editar código-fonte</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Existem dois tipos de codecs: </p> <ul><li>Sem perdas (lossless, em inglês)</li> <li>Com perdas (lossy, em inglês)</li></ul> <div class="mw-heading mw-heading3"><h3 id="Codecs_sem_Perdas">Codecs sem Perdas</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Codec&veaction=edit&section=2" title="Editar secção: Codecs sem Perdas" class="mw-editsection-visualeditor"><span>editar</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Codec&action=edit&section=2" title="Editar código-fonte da secção: Codecs sem Perdas"><span>editar código-fonte</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Os codecs sem perdas são codecs que codificam som ou imagem, para atingir certa medida de compressão, garantindo que o processo de descompressão reproduz o som ou imagem originais. Quando os dados são descodificados, o arquivo reconstruído é uma cópia idêntica do original. Este tipo de codec normalmente gera arquivos codificados com baixas taxas de compressão em relação aos formatos com perdas pois são entre 2 a 3 vezes menores que os arquivos originais. São muito utilizados pelas produtoras de conteúdo, nomeadamente a indústria do cinema, pois mantêm o som ou imagem originais. </p><p>Exemplos desse tipo de codec são o <a href="/wiki/Flac" class="mw-redirect" title="Flac">flac</a>, <a href="/w/index.php?title=Shorten&action=edit&redlink=1" class="new" title="Shorten (página não existe)">shorten</a>, <a href="/wiki/Wavpack" title="Wavpack">wavpack</a> e monkey's audio, para som. </p><p>Para vídeo, <a href="/wiki/HuffYUV" title="HuffYUV">HuffYUV</a>, MSU<sup id="cite_ref-1" class="reference"><a href="#cite_note-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup>, <a href="/wiki/MPEG" title="MPEG">MPEG</a>, <a href="/wiki/H.264" title="H.264">H.264</a> e <a href="/wiki/FFmpeg" title="FFmpeg">FFmpeg</a> Video 1. </p><p>Para imagens, temos os formatos <a href="/wiki/PNG" title="PNG">PNG</a> e <a href="/wiki/TIFF" class="mw-redirect" title="TIFF">TIFF</a>. </p> <div class="mw-heading mw-heading3"><h3 id="Codecs_com_Perdas">Codecs com Perdas</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Codec&veaction=edit&section=3" title="Editar secção: Codecs com Perdas" class="mw-editsection-visualeditor"><span>editar</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Codec&action=edit&section=3" title="Editar código-fonte da secção: Codecs com Perdas"><span>editar código-fonte</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Os codecs com perdas são codecs que codificam som ou imagem, gerando uma certa perda de qualidade com a finalidade de alcançar maiores taxas de compressão. Essa perda de qualidade é balanceada com a taxa de compressão para que não sejam criados artefatos perceptíveis. </p><p>Por exemplo, se um instrumento muito baixo toca ao mesmo tempo que outro instrumento mais alto, o primeiro é suprimido, já que dificilmente será ouvido. Nesse caso, somente um ouvido bem treinado pode identificar que o instrumento foi suprimido. </p><p>Os codecs com perdas foram criados para comprimir arquivos de mídia a taxas de compressão muito altas. Por exemplo, o <a href="/wiki/Vorbis" title="Vorbis">Vorbis</a> e o <a href="/wiki/MP3" title="MP3">MP3</a> são formatos para som que facilmente comprimem o arquivo em um décimo do tamanho original sem gerar perdas significativas de qualidade. </p><p>Exemplos de codecs com perdas são o <a href="/wiki/Vorbis" title="Vorbis">Ogg Vorbis</a>, <a href="/wiki/MP3" title="MP3">MP3</a>, <a href="/wiki/AC3" class="mw-redirect" title="AC3">AC3</a> e <a href="/wiki/WMA" class="mw-redirect" title="WMA">WMA</a>, para som. Para vídeo, temos o <a href="/wiki/Xvid" class="mw-redirect" title="Xvid">Xvid</a>, <a href="/wiki/DivX" title="DivX">DivX</a>, <a href="/wiki/RMVB" title="RMVB">RMVB</a>, <a href="/wiki/Windows_Media_Video" title="Windows Media Video">WMV</a>, <a href="/wiki/Theora" title="Theora">Theora</a> e <a href="/wiki/Sorenson_(codec)" title="Sorenson (codec)">Sorenson</a>. E para imagens temos o <a href="/wiki/JPEG" title="JPEG">JPEG</a>, <a href="/wiki/JPEG_2000" title="JPEG 2000">JPEG 2000</a> e <a href="/wiki/GIF" title="GIF">GIF</a>. </p> <div class="mw-heading mw-heading2"><h2 id="Taxa_de_Bits">Taxa de Bits</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Codec&veaction=edit&section=4" title="Editar secção: Taxa de Bits" class="mw-editsection-visualeditor"><span>editar</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Codec&action=edit&section=4" title="Editar código-fonte da secção: Taxa de Bits"><span>editar código-fonte</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>A taxa de bits ou bitrate, em inglês, é uma das medidas da qualidade de um arquivo comprimido. A taxa de bits representa o tamanho final desejado para o arquivo e, normalmente, é apresentada como Kbit/s. </p><p>1 Kbit/s significa que a cada segundo, o codec tem 1000 bits do arquivo final para utilizar, ou seja, se um arquivo de som tem 8 segundos e é comprimido a uma taxa de 1 Kbit/s, o arquivo final terá 8 <a href="/wiki/Bit" title="Bit">Kbits</a> ou 1 <a href="/wiki/Byte" title="Byte">Kbyte</a>. Conclui-se, então, que quanto maior for a taxa de bits, melhor será a qualidade do arquivo final, já que o codec terá mais espaço para poder comprimir o arquivo original, necessitando descartar menos informações do arquivo. </p><p>Com a popularização do MP3, a taxa de bits de 128 Kbits/s (128000 bits/s = 16 Kbytes/s) foi muito utilizada, já que, no início, essa era a menor taxa de bits que o MP3 poderia utilizar para gerar um arquivo final com boa qualidade. Hoje em dia, com os codecs mais avançados, pode-se gerar arquivos com 64 Kbits/s de qualidade semelhante aos primeiros MP3. </p><p>As taxas de bits podem ser divididas em três categorias principais: </p> <ul><li>CBR (constant bitrate)</li></ul> <dl><dd>O codec utiliza uma taxa de bits constante em todo a duração do arquivo. Isso significa que em momentos de silêncio provavelmente haverá desperdício de espaço, enquanto que em momentos de muita intensidade sonora haverá perda maior de informação acústica.</dd></dl> <ul><li>VBR (variable bitrate)</li></ul> <dl><dd>O codec utiliza uma taxa de bits variável, dessa forma otimizando a utilização do espaço, ao permitir maior uso deste para os momentos mais necessários e reduzindo a taxa de bits ao mínimo nos momentos de silêncio. A maioria dos codecs sem perdas utiliza esse formato.</dd></dl> <ul><li>ABR (average bitrate)</li></ul> <dl><dd>Um tipo específico de VBR que garante que ao final do processo de compressão o arquivo terá uma taxa de bits média pré-definida.</dd></dl> <div class="mw-heading mw-heading2"><h2 id="Ver_também"><span id="Ver_tamb.C3.A9m"></span>Ver também</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Codec&veaction=edit&section=5" title="Editar secção: Ver também" class="mw-editsection-visualeditor"><span>editar</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Codec&action=edit&section=5" title="Editar código-fonte da secção: Ver também"><span>editar código-fonte</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul><li><a href="/wiki/Codec_de_%C3%A1udio" title="Codec de áudio">Codec de áudio</a></li> <li><a href="/wiki/Codec_de_v%C3%ADdeo" title="Codec de vídeo">Codec de vídeo</a></li></ul> <style data-mw-deduplicate="TemplateStyles:r69325977">@media(max-width:768px){.mw-parser-output .mobile-stack{width:100%!important;float:none!important;margin:10px auto!important;text-align:center!important;box-sizing:border-box!important}.mw-parser-output .mobile-stack .image-container{float:none!important;display:inline-block;padding-bottom:10px}.mw-parser-output .mobile-stack .text-container{margin-left:0!important}}</style><div class="noprint mobile-stack" style="clear: right; border: solid #aaa 1px; margin: 0 0 1em 1em; font-size: 90%; background: var(--background-color-neutral-subtle, #f9f9f9); color: inherit; width: 238px; padding: 5px; spacing: 0; text-align: left; float: right;"> <div class="image-container" style="float: left; vertical-align:middle; margin: 0 10px 0 5px;"><figure class="mw-halign-none" typeof="mw:File"><span><img alt="" src="//upload.wikimedia.org/wikipedia/commons/thumb/e/ec/Wiktionary-logo.svg/40px-Wiktionary-logo.svg.png" decoding="async" width="40" height="38" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/e/ec/Wiktionary-logo.svg/60px-Wiktionary-logo.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/e/ec/Wiktionary-logo.svg/80px-Wiktionary-logo.svg.png 2x" data-file-width="370" data-file-height="350" /></span><figcaption></figcaption></figure></div> <div class="text-container" style="margin-left: 30px; line-height:normal; vertical-align:middle;">Procure por <i><b><a href="https://pt.wiktionary.org/wiki/Codec" class="extiw" title="wikt:Codec">Codec</a></b></i> no <a href="/wiki/Wikcion%C3%A1rio" title="Wikcionário">Wikcionário</a>, o dicionário livre.</div></div> <h2 id="Referências" style="cursor: help;" title="Esta seção foi configurada para não ser editável diretamente. Edite a página toda ou a seção anterior em vez disso."><span id="Refer.C3.AAncias"></span>Referências</h2> <div class="reflist" style="list-style-type: decimal;"><div class="mw-references-wrap"><ol class="references"> <li id="cite_note-1"><span class="mw-cite-backlink"><a href="#cite_ref-1">↑</a></span> <span class="reference-text"><a rel="nofollow" class="external text" href="http://www.compression.ru/video/ls-codec/index_en.html">"MSU"</a></span> </li> </ol></div></div> <div role="navigation" class="navbox" aria-labelledby="Reprodutores_de_mídia" style="padding:3px"><table class="nowraplinks collapsible autocollapsed navbox-inner" style="border-spacing:0;background:transparent;color:inherit"><tbody><tr><th scope="col" class="navbox-title" colspan="2"><style data-mw-deduplicate="TemplateStyles:r69285286">.mw-parser-output .hlist dl,.mw-parser-output .hlist ol,.mw-parser-output .hlist ul{margin:0;padding:0}.mw-parser-output .hlist dd,.mw-parser-output .hlist dt,.mw-parser-output .hlist li{margin:0;display:inline}.mw-parser-output .hlist.inline,.mw-parser-output .hlist.inline dl,.mw-parser-output .hlist.inline ol,.mw-parser-output .hlist.inline ul,.mw-parser-output .hlist dl dl,.mw-parser-output .hlist dl ol,.mw-parser-output .hlist dl ul,.mw-parser-output .hlist ol dl,.mw-parser-output .hlist ol ol,.mw-parser-output .hlist ol ul,.mw-parser-output .hlist ul dl,.mw-parser-output .hlist ul ol,.mw-parser-output .hlist ul ul{display:inline}.mw-parser-output .hlist .mw-empty-li{display:none}.mw-parser-output .hlist dt::after{content:": "}.mw-parser-output .hlist dd::after,.mw-parser-output .hlist li::after{content:" · ";font-weight:bold}.mw-parser-output .hlist dd:last-child::after,.mw-parser-output .hlist dt:last-child::after,.mw-parser-output .hlist li:last-child::after{content:none}.mw-parser-output .hlist dd dd:first-child::before,.mw-parser-output .hlist dd dt:first-child::before,.mw-parser-output .hlist dd li:first-child::before,.mw-parser-output .hlist dt dd:first-child::before,.mw-parser-output .hlist dt dt:first-child::before,.mw-parser-output .hlist dt li:first-child::before,.mw-parser-output .hlist li dd:first-child::before,.mw-parser-output .hlist li dt:first-child::before,.mw-parser-output .hlist li li:first-child::before{content:" (";font-weight:normal}.mw-parser-output .hlist dd dd:last-child::after,.mw-parser-output .hlist dd dt:last-child::after,.mw-parser-output .hlist dd li:last-child::after,.mw-parser-output .hlist dt dd:last-child::after,.mw-parser-output .hlist dt dt:last-child::after,.mw-parser-output .hlist dt li:last-child::after,.mw-parser-output .hlist li dd:last-child::after,.mw-parser-output .hlist li dt:last-child::after,.mw-parser-output .hlist li li:last-child::after{content:")";font-weight:normal}.mw-parser-output .hlist ol{counter-reset:listitem}.mw-parser-output .hlist ol>li{counter-increment:listitem}.mw-parser-output .hlist ol>li::before{content:" "counter(listitem)"\a0 "}.mw-parser-output .hlist dd ol>li:first-child::before,.mw-parser-output .hlist dt ol>li:first-child::before,.mw-parser-output .hlist li ol>li:first-child::before{content:" ("counter(listitem)"\a0 "}</style><style data-mw-deduplicate="TemplateStyles:r69785347">.mw-parser-output .navbar{display:inline;font-size:88%;font-weight:normal}.mw-parser-output .navbar-collapse{float:left;text-align:left}.mw-parser-output .navbar-boxtext{word-spacing:0}.mw-parser-output .navbar ul{display:inline-block;white-space:nowrap;line-height:inherit}.mw-parser-output .navbar-brackets::before{margin-right:-0.125em;content:"[ "}.mw-parser-output .navbar-brackets::after{margin-left:-0.125em;content:" ]"}.mw-parser-output .navbar li{word-spacing:-0.125em}.mw-parser-output .navbar a>span,.mw-parser-output .navbar a>abbr{text-decoration:inherit}.mw-parser-output .navbar-mini abbr{font-variant:small-caps;border-bottom:none;text-decoration:none;cursor:inherit}.mw-parser-output .navbar-ct-full{font-size:114%;margin:0 7em}.mw-parser-output .navbar-ct-mini{font-size:114%;margin:0 4em}html.skin-theme-clientpref-night .mw-parser-output .navbar li a abbr{color:var(--color-base)!important}@media(prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output .navbar li a abbr{color:var(--color-base)!important}}@media print{.mw-parser-output .navbar{display:none!important}}</style><div class="navbar plainlinks hlist navbar-mini"><ul><li class="nv-ver"><a href="/wiki/Predefini%C3%A7%C3%A3o:Reprodutores_de_m%C3%ADdia" title="Predefinição:Reprodutores de mídia"><abbr title="Ver esta predefinição" style=";;background:none transparent;border:none;-moz-box-shadow:none;-webkit-box-shadow:none;box-shadow:none; padding:0;">v</abbr></a></li><li class="nv-discutir"><a href="/w/index.php?title=Predefini%C3%A7%C3%A3o_Discuss%C3%A3o:Reprodutores_de_m%C3%ADdia&action=edit&redlink=1" class="new" title="Predefinição Discussão:Reprodutores de mídia (página não existe)"><abbr title="Discutir esta predefinição" style=";;background:none transparent;border:none;-moz-box-shadow:none;-webkit-box-shadow:none;box-shadow:none; padding:0;">d</abbr></a></li><li class="nv-editar"><a href="/wiki/Especial:EditPage/Predefini%C3%A7%C3%A3o:Reprodutores_de_m%C3%ADdia" title="Especial:EditPage/Predefinição:Reprodutores de mídia"><abbr title="Editar esta predefinição" style=";;background:none transparent;border:none;-moz-box-shadow:none;-webkit-box-shadow:none;box-shadow:none; padding:0;">e</abbr></a></li></ul></div><div id="Reprodutores_de_mídia" style="font-size:114%;margin:0 4em"><a href="/wiki/Reprodutor_de_m%C3%ADdia" title="Reprodutor de mídia">Reprodutores de mídia</a></div></th></tr><tr><td colspan="2" class="navbox-list navbox-odd hlist" style="width:100%;padding:0px"><div style="padding:0em 0.25em"></div><table class="nowraplinks collapsible collapsed navbox-subgroup" style="border-spacing:0"><tbody><tr><th scope="col" class="navbox-title" colspan="2"><div id="Tecnologia" style="font-size:114%;margin:0 4em">Tecnologia</div></th></tr><tr><td colspan="2" class="navbox-list navbox-odd" style="width:100%;padding:0px"><div style="padding:0em 0.25em"><style data-mw-deduplicate="TemplateStyles:r69328899">.mw-parser-output .navbox{box-sizing:border-box;border:1px solid #a2a9b1;width:100%;clear:both;font-size:88%;text-align:center;padding:1px;margin:0 auto 0}.mw-parser-output .navbox .navbox{margin-top:0}.mw-parser-output .navbox+.navbox,.mw-parser-output .navbox+.navbox-styles+.navbox{margin-top:-1px}.mw-parser-output .navbox-inner,.mw-parser-output .navbox-subgroup{width:100%}.mw-parser-output .navbox-group,.mw-parser-output .navbox-title,.mw-parser-output .navbox-abovebelow{padding:0.25em 1em;line-height:1.5em;text-align:center}.mw-parser-output .navbox-group{white-space:nowrap;text-align:right}.mw-parser-output .navbox,.mw-parser-output .navbox-subgroup{background-color:#fdfdfd}.mw-parser-output .navbox-list{line-height:1.5em;border-color:#fdfdfd}.mw-parser-output .navbox-list-with-group{text-align:left;border-left-width:2px;border-left-style:solid}.mw-parser-output tr+tr>.navbox-abovebelow,.mw-parser-output tr+tr>.navbox-group,.mw-parser-output tr+tr>.navbox-image,.mw-parser-output tr+tr>.navbox-list{border-top:2px solid #fdfdfd}.mw-parser-output .navbox-title{background-color:#ccf}.mw-parser-output .navbox-abovebelow,.mw-parser-output .navbox-group,.mw-parser-output .navbox-subgroup .navbox-title{background-color:#ddf}.mw-parser-output .navbox-subgroup .navbox-group,.mw-parser-output .navbox-subgroup .navbox-abovebelow{background-color:#e6e6ff}.mw-parser-output .navbox-even{background-color:#f7f7f7}.mw-parser-output .navbox-odd{background-color:transparent}.mw-parser-output .navbox .hlist td dl,.mw-parser-output .navbox .hlist td ol,.mw-parser-output .navbox .hlist td ul,.mw-parser-output .navbox td.hlist dl,.mw-parser-output .navbox td.hlist ol,.mw-parser-output .navbox td.hlist ul{padding:0.125em 0}.mw-parser-output .navbox .navbar{display:block;font-size:100%}.mw-parser-output .navbox-title .navbar{float:left;text-align:left;margin-right:0.5em}body.skin--responsive .mw-parser-output .navbox-image img{max-width:none!important}@media print{body.ns-0 .mw-parser-output .navbox{display:none!important}}</style></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th scope="row" class="navbox-group" style="width:1%">Artigos</th><td class="navbox-list navbox-even" style="text-align:left;border-left-width:2px;border-left-style:solid;width:100%;padding:0px"><div style="padding:0em 0.25em"><a class="mw-selflink selflink">Codec</a>  •  <a href="/wiki/Playlist" class="mw-redirect" title="Playlist">Playlist</a>  •  <a href="/wiki/Podcasting" title="Podcasting">Podcasting</a>  •  <a href="/wiki/P2PTV" title="P2PTV">P2PTV</a>  •  <a href="/wiki/Televis%C3%A3o_OTT" class="mw-redirect" title="Televisão OTT">Televisão OTT</a>  •  <a href="/wiki/Web_r%C3%A1dio" title="Web rádio">Web rádio</a></div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Preferências</th><td class="navbox-list navbox-odd" style="text-align:left;border-left-width:2px;border-left-style:solid;width:100%;padding:0px"><div style="padding:0em 0.25em"><a href="/wiki/Reprodutor_de_m%C3%ADdia_port%C3%A1til" title="Reprodutor de mídia portátil">Reprodutor de mídia portátil</a>  •  <a href="/wiki/Home_theater" title="Home theater">Home theater</a>  •  <a href="/wiki/HTPC" title="HTPC">HTPC</a></div></td></tr></tbody></table><div></div></td></tr></tbody></table><div></div></td></tr><tr><td colspan="2" class="navbox-list navbox-odd hlist" style="width:100%;padding:0px"><div style="padding:0em 0.25em"></div><table class="nowraplinks collapsible collapsed navbox-subgroup" style="border-spacing:0"><tbody><tr><th scope="col" class="navbox-title" colspan="2"><div id="Comercial" style="font-size:114%;margin:0 4em">Comercial</div></th></tr><tr><td colspan="2" class="navbox-list navbox-odd" style="width:100%;padding:0px"><div style="padding:0em 0.25em"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r69328899" /></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/M%C3%B3vel" class="mw-disambig" title="Móvel">Móvel</a></th><td class="navbox-list navbox-even" style="text-align:left;border-left-width:2px;border-left-style:solid;width:100%;padding:0px"><div style="padding:0em 0.25em"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r69328899" /></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th scope="row" class="navbox-group" style="width:1%">Vários</th><td class="navbox-list navbox-odd" style="text-align:left;border-left-width:2px;border-left-style:solid;width:100%;padding:0px"><div style="padding:0em 0.25em"><a href="/wiki/Windows_Media_Player" title="Windows Media Player">Media Player</a> para <a href="/wiki/Windows_Mobile" title="Windows Mobile">Windows Mobile</a>  •  Multi-Plataforma (<a href="/wiki/CoreAVC" title="CoreAVC">CoreAVC CorePlayer</a>)</div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Android" title="Android">Android</a></th><td class="navbox-list navbox-even" style="text-align:left;border-left-width:2px;border-left-style:solid;width:100%;padding:0px"><div style="padding:0em 0.25em">DoubleTwist Media Player  •  <a href="/wiki/RealPlayer" title="RealPlayer">RealPlayer para Android</a>  •  TuneWiki para Android  •  <a href="/wiki/Winamp" title="Winamp">Winamp para Android</a></div></td></tr></tbody></table><div></div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Sistema_operativo" title="Sistema operativo">Sistema operativo</a></th><td class="navbox-list navbox-odd" style="text-align:left;border-left-width:2px;border-left-style:solid;width:100%;padding:0px"><div style="padding:0em 0.25em"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r69328899" /></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Microsoft_Windows" title="Microsoft Windows">Microsoft Windows</a></th><td class="navbox-list navbox-even" style="text-align:left;border-left-width:2px;border-left-style:solid;width:100%;padding:0px"><div style="padding:0em 0.25em">Connect Player  •  Iriver plus 3  •  Media Center  •  <a href="/wiki/PowerDVD" title="PowerDVD">PowerDVD</a>  •  <a href="/wiki/SonicStage" class="mw-redirect" title="SonicStage">SonicStage</a>  •  Core Media Player  •  <a href="/wiki/Windows_Media_Center" title="Windows Media Center">Windows Media Center</a>  •  <a href="/wiki/Windows_Media_Player" title="Windows Media Player">Windows Media Player</a>  •  Yahoo! Music Jukebox  •  <a href="/wiki/Zune" title="Zune">Zune</a></div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Mac_OS_X" class="mw-redirect" title="Mac OS X">Mac OS X</a></th><td class="navbox-list navbox-odd" style="text-align:left;border-left-width:2px;border-left-style:solid;width:100%;padding:0px"><div style="padding:0em 0.25em"><a href="/w/index.php?title=Centerstage&action=edit&redlink=1" class="new" title="Centerstage (página não existe)">Centerstage</a>  •  <a href="/wiki/Chroma" class="mw-redirect" title="Chroma">Chroma</a>  •  DVD Player  •  <a href="/w/index.php?title=Front_Row&action=edit&redlink=1" class="new" title="Front Row (página não existe)">Front Row</a>  •  <a href="/w/index.php?title=Peel_(software)&action=edit&redlink=1" class="new" title="Peel (software) (página não existe)">Peel</a>  •  Flip4Mac WMV Player</div></td></tr></tbody></table><div></div></td></tr></tbody></table><div></div></td></tr></tbody></table><div></div></td></tr><tr><td colspan="2" class="navbox-list navbox-odd hlist" style="width:100%;padding:0px"><div style="padding:0em 0.25em"></div><table class="nowraplinks collapsible collapsed navbox-subgroup" style="border-spacing:0"><tbody><tr><th scope="col" class="navbox-title" colspan="2"><div id="Softwares_Freeware_ou_Free" style="font-size:114%;margin:0 4em">Softwares Freeware ou Free</div></th></tr><tr><td colspan="2" class="navbox-list navbox-odd" style="width:100%;padding:0px"><div style="padding:0em 0.25em"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r69328899" /></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Microsoft_Windows" title="Microsoft Windows">Microsoft Windows</a></th><td class="navbox-list navbox-even" style="text-align:left;border-left-width:2px;border-left-style:solid;width:100%;padding:0px"><div style="padding:0em 0.25em"><a href="/wiki/Foobar2000" title="Foobar2000">foobar2000</a>  •  <a href="/wiki/GOM_Player" title="GOM Player">GOM Player</a>  •  <a href="/wiki/JetAudio" title="JetAudio">jetAudio</a>  •  <a href="/wiki/Media_Player_Classic" title="Media Player Classic">Media Player Classic</a>  •  <a href="/wiki/MediaMonkey" title="MediaMonkey">MediaMonkey</a>  •  <a href="/w/index.php?title=MusicBee&action=edit&redlink=1" class="new" title="MusicBee (página não existe)">MusicBee</a>  •  <a href="/wiki/MusikCube" title="MusikCube">MusikCube</a>  •  <a href="/wiki/QuickTime" title="QuickTime">QuickPlayer</a>  •  <a href="/w/index.php?title=Quintessential_Player&action=edit&redlink=1" class="new" title="Quintessential Player (página não existe)">Quintessential Player</a>  •  <a href="/wiki/Winamp" title="Winamp">Winamp</a></div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Linux" title="Linux">Linux</a></th><td class="navbox-list navbox-odd" style="text-align:left;border-left-width:2px;border-left-style:solid;width:100%;padding:0px"><div style="padding:0em 0.25em"><a href="/wiki/Amarok_(software)" title="Amarok (software)">Amarok</a>  •  <a href="/w/index.php?title=Baudline&action=edit&redlink=1" class="new" title="Baudline (página não existe)">Baudline</a>  •  <a href="/w/index.php?title=Beep_Media_Player&action=edit&redlink=1" class="new" title="Beep Media Player (página não existe)">Beep Media Player</a>  •  <a href="/w/index.php?title=Cmus&action=edit&redlink=1" class="new" title="Cmus (página não existe)">cmus</a>  •  <a href="/wiki/Exaile" title="Exaile">Exaile</a>  •  Gnome Music Player Client  •  <a href="/w/index.php?title=Helix_(software)&action=edit&redlink=1" class="new" title="Helix (software) (página não existe)">Helix</a>  •  <a href="/w/index.php?title=JuK&action=edit&redlink=1" class="new" title="JuK (página não existe)">JuK</a>  •  <a href="/wiki/Kaffeine" title="Kaffeine">Kaffeine</a>  •  <a href="/w/index.php?title=LinuxMCE&action=edit&redlink=1" class="new" title="LinuxMCE (página não existe)">LinuxMCE</a>  •  <a href="/wiki/Linspire" title="Linspire">Lsongs</a>  •  <a href="/wiki/Miro_(media_player)" title="Miro (media player)">Miro</a>  •  <a href="/w/index.php?title=Mpg123&action=edit&redlink=1" class="new" title="Mpg123 (página não existe)">Mpg123</a>  •  <a href="/wiki/Muine" title="Muine">Muine</a>  •  Music Player Daemon  •  Music on Console  •  <a href="/wiki/Noatun" title="Noatun">Noatun</a>  •  Ogle DVD Player  •  <a href="/wiki/Rhythmbox" title="Rhythmbox">Rhythmbox</a>  •  <a href="/wiki/Totem_(software)" title="Totem (software)">Totem</a>  •  <a href="/wiki/Xine" title="Xine">Xine</a>  •  <a href="/wiki/XMMS" title="XMMS">XMMS</a>  •  XMMS2</div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Multi-plataforma</th><td class="navbox-list navbox-even" style="text-align:left;border-left-width:2px;border-left-style:solid;width:100%;padding:0px"><div style="padding:0em 0.25em"><a href="/wiki/Adobe_Flash_Player" title="Adobe Flash Player">Adobe Flash Player</a>  •  <a href="/wiki/Adobe_Shockwave" class="mw-redirect" title="Adobe Shockwave">Adobe Shockwave</a>  •  <a href="/wiki/Amarok_(software)" title="Amarok (software)">Amarok</a>  •  <a href="/wiki/Audacious" title="Audacious">Audacious</a>  •  <a href="/wiki/Banshee_(media_player)" class="mw-redirect" title="Banshee (media player)">Banshee</a>  •  <a href="/w/index.php?title=Boxee&action=edit&redlink=1" class="new" title="Boxee (página não existe)">Boxee</a>  •  <a href="/wiki/Clementine_(software)" title="Clementine (software)">Clementine</a>  •  <a href="/wiki/DivX" title="DivX">DivX Player</a>  •  <a href="/wiki/FFmpeg" title="FFmpeg">ffplay</a>  •  <a href="/wiki/ITunes" title="ITunes">iTunes</a>  •  <a href="/wiki/Miro_(media_player)" title="Miro (media player)">Miro</a>  •  <a href="/wiki/MPlayer" title="MPlayer">MPlayer</a>  •  <a href="/wiki/SMPlayer" title="SMPlayer">SMPlayer</a>  •  <a href="/w/index.php?title=Nightingale_(software)&action=edit&redlink=1" class="new" title="Nightingale (software) (página não existe)">Nightingale</a>  •  <a href="/wiki/QuickTime" title="QuickTime">QuickTime</a>  •  <a href="/wiki/RealPlayer" title="RealPlayer">RealPlayer</a>  •  <a href="/wiki/Songbird_(media_player)" class="mw-redirect" title="Songbird (media player)">Songbird</a>  •  <a href="/wiki/VLC" title="VLC">VLC media player</a>  •  <a href="/wiki/XBMC" class="mw-redirect" title="XBMC">XBMC</a>  •  <a href="/wiki/Zinf" title="Zinf">Zinf</a></div></td></tr></tbody></table><div></div></td></tr></tbody></table><div></div></td></tr></tbody></table></div>    </div><noscript><img src="https://login.wikimedia.org/wiki/Special:CentralAutoLogin/start?useformat=desktop&type=1x1&usesul3=0" alt="" width="1" height="1" style="border: none; position: absolute;"></noscript> <div class="printfooter" data-nosnippet="">Obtida de "<a dir="ltr" href="https://pt.wikipedia.org/w/index.php?title=Codec&oldid=64844197">https://pt.wikipedia.org/w/index.php?title=Codec&oldid=64844197</a>"</div></div> <div id="catlinks" class="catlinks" data-mw="interface"><div id="mw-normal-catlinks" class="mw-normal-catlinks"><a href="/wiki/Especial:Categorias" title="Especial:Categorias">Categorias</a>: <ul><li><a href="/wiki/Categoria:Compress%C3%A3o_de_dados" title="Categoria:Compressão de dados">Compressão de dados</a></li><li><a href="/wiki/Categoria:Processamento_de_sinais" title="Categoria:Processamento de sinais">Processamento de sinais</a></li></ul></div><div id="mw-hidden-catlinks" class="mw-hidden-catlinks mw-hidden-cats-hidden">Categorias ocultas: <ul><li><a href="/wiki/Categoria:!Artigos_que_carecem_de_fontes_secund%C3%A1rias_desde_mar%C3%A7o_de_2012" title="Categoria:!Artigos que carecem de fontes secundárias desde março de 2012">!Artigos que carecem de fontes secundárias desde março de 2012</a></li><li><a href="/wiki/Categoria:!Artigos_que_carecem_de_fontes_secund%C3%A1rias_sem_indica%C3%A7%C3%A3o_de_tema" title="Categoria:!Artigos que carecem de fontes secundárias sem indicação de tema">!Artigos que carecem de fontes secundárias sem indicação de tema</a></li></ul></div></div> </div> </main> </div> <div class="mw-footer-container"> <footer id="footer" class="mw-footer" > <ul id="footer-info"> <li id="footer-info-lastmod"> Esta página foi editada pela última vez às 18h07min de 2 de dezembro de 2022.</li> <li id="footer-info-copyright">Este texto é disponibilizado nos termos da licença <a rel="nofollow" class="external text" href="https://creativecommons.org/licenses/by-sa/4.0/deed.pt">Atribuição-CompartilhaIgual 4.0 Internacional (CC BY-SA 4.0) da Creative Commons</a>; pode estar sujeito a condições adicionais. Para mais detalhes, consulte as <a class="external text" href="https://foundation.wikimedia.org/wiki/Special:MyLanguage/Policy:Terms_of_Use">condições de utilização</a>.</li> </ul> <ul id="footer-places"> <li id="footer-places-privacy"><a href="https://foundation.wikimedia.org/wiki/Special:MyLanguage/Policy:Privacy_policy/pt-br">Política de privacidade</a></li> <li id="footer-places-about"><a href="/wiki/Wikip%C3%A9dia:Sobre">Sobre a Wikipédia</a></li> <li id="footer-places-disclaimers"><a href="/wiki/Wikip%C3%A9dia:Aviso_geral">Avisos gerais</a></li> <li id="footer-places-wm-codeofconduct"><a href="https://foundation.wikimedia.org/wiki/Special:MyLanguage/Policy:Universal_Code_of_Conduct">Código de conduta</a></li> <li id="footer-places-developers"><a href="https://developer.wikimedia.org">Programadores</a></li> <li id="footer-places-statslink"><a href="https://stats.wikimedia.org/#/pt.wikipedia.org">Estatísticas</a></li> <li id="footer-places-cookiestatement"><a href="https://foundation.wikimedia.org/wiki/Special:MyLanguage/Policy:Cookie_statement">Declaração sobre cookies</a></li> <li id="footer-places-mobileview"><a href="//pt.m.wikipedia.org/w/index.php?title=Codec&mobileaction=toggle_view_mobile" class="noprint stopMobileRedirectToggle">Versão móvel</a></li> </ul> <ul id="footer-icons" class="noprint"> <li id="footer-copyrightico"><a href="https://www.wikimedia.org/" class="cdx-button cdx-button--fake-button cdx-button--size-large cdx-button--fake-button--enabled"><picture><source media="(min-width: 500px)" srcset="/static/images/footer/wikimedia-button.svg" width="84" height="29"><img src="/static/images/footer/wikimedia.svg" width="25" height="25" alt="Wikimedia Foundation" lang="en" loading="lazy"></picture></a></li> <li id="footer-poweredbyico"><a href="https://www.mediawiki.org/" class="cdx-button cdx-button--fake-button cdx-button--size-large cdx-button--fake-button--enabled"><picture><source media="(min-width: 500px)" srcset="/w/resources/assets/poweredby_mediawiki.svg" width="88" height="31"><img src="/w/resources/assets/mediawiki_compact.svg" alt="Powered by MediaWiki" lang="en" width="25" height="25" loading="lazy"></picture></a></li> </ul> </footer> </div> </div> </div> <div class="vector-header-container vector-sticky-header-container"> <div id="vector-sticky-header" class="vector-sticky-header"> <div class="vector-sticky-header-start"> <div class="vector-sticky-header-icon-start vector-button-flush-left vector-button-flush-right" aria-hidden="true"> <button class="cdx-button cdx-button--weight-quiet cdx-button--icon-only vector-sticky-header-search-toggle" tabindex="-1" data-event-name="ui.vector-sticky-search-form.icon"><span class="vector-icon mw-ui-icon-search mw-ui-icon-wikimedia-search"></span> <span>Busca</span> </button> </div> <div role="search" class="vector-search-box-vue vector-search-box-show-thumbnail vector-search-box"> <div class="vector-typeahead-search-container"> <div class="cdx-typeahead-search cdx-typeahead-search--show-thumbnail"> <form action="/w/index.php" id="vector-sticky-search-form" class="cdx-search-input cdx-search-input--has-end-button"> <div class="cdx-search-input__input-wrapper" data-search-loc="header-moved"> <div class="cdx-text-input cdx-text-input--has-start-icon"> <input class="cdx-text-input__input" type="search" name="search" placeholder="Pesquisar na Wikipédia"> <span class="cdx-text-input__icon cdx-text-input__start-icon"></span> </div> <input type="hidden" name="title" value="Especial:Pesquisar"> </div> <button class="cdx-button cdx-search-input__end-button">Pesquisar</button> </form> </div> </div> </div> <div class="vector-sticky-header-context-bar"> <nav aria-label="Conteúdo" class="vector-toc-landmark"> <div id="vector-sticky-header-toc" class="vector-dropdown mw-portlet mw-portlet-sticky-header-toc vector-sticky-header-toc vector-button-flush-left" > <input type="checkbox" id="vector-sticky-header-toc-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-vector-sticky-header-toc" class="vector-dropdown-checkbox " aria-label="Alternar o índice" > <label id="vector-sticky-header-toc-label" for="vector-sticky-header-toc-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--icon-only " aria-hidden="true" ><span class="vector-icon mw-ui-icon-listBullet mw-ui-icon-wikimedia-listBullet"></span> <span class="vector-dropdown-label-text">Alternar o índice</span> </label> <div class="vector-dropdown-content"> <div id="vector-sticky-header-toc-unpinned-container" class="vector-unpinned-container"> </div> </div> </div> </nav> <div class="vector-sticky-header-context-bar-primary" aria-hidden="true" ><span class="mw-page-title-main">Codec</span></div> </div> </div> <div class="vector-sticky-header-end" aria-hidden="true"> <div class="vector-sticky-header-icons"> <a href="#" class="cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--icon-only" id="ca-talk-sticky-header" tabindex="-1" data-event-name="talk-sticky-header"><span class="vector-icon mw-ui-icon-speechBubbles mw-ui-icon-wikimedia-speechBubbles"></span> <span></span> </a> <a href="#" class="cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--icon-only" id="ca-subject-sticky-header" tabindex="-1" data-event-name="subject-sticky-header"><span class="vector-icon mw-ui-icon-article mw-ui-icon-wikimedia-article"></span> <span></span> </a> <a href="#" class="cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--icon-only" id="ca-history-sticky-header" tabindex="-1" data-event-name="history-sticky-header"><span class="vector-icon mw-ui-icon-wikimedia-history mw-ui-icon-wikimedia-wikimedia-history"></span> <span></span> </a> <a href="#" class="cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--icon-only mw-watchlink" id="ca-watchstar-sticky-header" tabindex="-1" data-event-name="watch-sticky-header"><span class="vector-icon mw-ui-icon-wikimedia-star mw-ui-icon-wikimedia-wikimedia-star"></span> <span></span> </a> <a href="#" class="cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--icon-only" id="ca-ve-edit-sticky-header" tabindex="-1" data-event-name="ve-edit-sticky-header"><span class="vector-icon mw-ui-icon-wikimedia-edit mw-ui-icon-wikimedia-wikimedia-edit"></span> <span></span> </a> <a href="#" class="cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--icon-only" id="ca-edit-sticky-header" tabindex="-1" data-event-name="wikitext-edit-sticky-header"><span class="vector-icon mw-ui-icon-wikimedia-wikiText mw-ui-icon-wikimedia-wikimedia-wikiText"></span> <span></span> </a> <a href="#" class="cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--icon-only" id="ca-viewsource-sticky-header" tabindex="-1" data-event-name="ve-edit-protected-sticky-header"><span class="vector-icon mw-ui-icon-wikimedia-editLock mw-ui-icon-wikimedia-wikimedia-editLock"></span> <span></span> </a> </div> <div class="vector-sticky-header-buttons"> <button class="cdx-button cdx-button--weight-quiet mw-interlanguage-selector" id="p-lang-btn-sticky-header" tabindex="-1" data-event-name="ui.dropdown-p-lang-btn-sticky-header"><span class="vector-icon mw-ui-icon-wikimedia-language mw-ui-icon-wikimedia-wikimedia-language"></span> <span>47 línguas</span> </button> <a href="#" class="cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--action-progressive" id="ca-addsection-sticky-header" tabindex="-1" data-event-name="addsection-sticky-header"><span class="vector-icon mw-ui-icon-speechBubbleAdd-progressive mw-ui-icon-wikimedia-speechBubbleAdd-progressive"></span> <span>Adicionar tópico</span> </a> </div> <div class="vector-sticky-header-icon-end"> <div class="vector-user-links"> </div> </div> </div> </div> </div> <div class="mw-portlet mw-portlet-dock-bottom emptyPortlet" id="p-dock-bottom"> <ul> </ul> </div> <script>(RLQ=window.RLQ||[]).push(function(){mw.config.set({"wgHostname":"mw-web.eqiad.main-dbf9b8f9d-rmzkt","wgBackendResponseTime":158,"wgPageParseReport":{"limitreport":{"cputime":"0.255","walltime":"0.300","ppvisitednodes":{"value":2022,"limit":1000000},"postexpandincludesize":{"value":56303,"limit":2097152},"templateargumentsize":{"value":276,"limit":2097152},"expansiondepth":{"value":12,"limit":100},"expensivefunctioncount":{"value":0,"limit":500},"unstrip-depth":{"value":0,"limit":20},"unstrip-size":{"value":24529,"limit":5000000},"entityaccesscount":{"value":0,"limit":400},"timingprofile":["100.00% 253.163 1 -total"," 53.17% 134.616 1 Predefinição:Fontes_primárias"," 43.57% 110.293 1 Predefinição:Ambox"," 39.82% 100.813 1 Predefinição:Reprodutores_de_mídia"," 38.60% 97.720 1 Predefinição:Navbox_with_collapsible_groups"," 15.88% 40.212 5 Predefinição:Navbox"," 8.46% 21.415 1 Predefinição:Manutenção/Categorizando_por_assunto"," 5.77% 14.609 1 Predefinição:Manutenção/Categorizando_por_assunto/auxcat"," 3.19% 8.081 1 Predefinição:Wiktionary1"," 2.26% 5.724 1 Predefinição:Encontre_fontes"]},"scribunto":{"limitreport-timeusage":{"value":"0.141","limit":"10.000"},"limitreport-memusage":{"value":1533354,"limit":52428800}},"cachereport":{"origin":"mw-web.eqiad.main-75687f9f4b-qhsnt","timestamp":"20250323223822","ttl":2592000,"transientcontent":false}}});});</script> <script type="application/ld+json">{"@context":"https:\/\/schema.org","@type":"Article","name":"Codec","url":"https:\/\/pt.wikipedia.org\/wiki\/Codec","sameAs":"http:\/\/www.wikidata.org\/entity\/Q184748","mainEntity":"http:\/\/www.wikidata.org\/entity\/Q184748","author":{"@type":"Organization","name":"Contribuidores dos projetos da Wikimedia"},"publisher":{"@type":"Organization","name":"Funda\u00e7\u00e3o Wikimedia, Inc.","logo":{"@type":"ImageObject","url":"https:\/\/www.wikimedia.org\/static\/images\/wmf-hor-googpub.png"}},"datePublished":"2005-08-23T15:33:48Z","dateModified":"2022-12-02T18:07:56Z","headline":"software que implementa a codifica\u00e7\u00e3o e decodifica\u00e7\u00e3o de um formato de dados"}</script> </body> </html>