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Expect behavior to change in the future."> <span class="visually-hidden">Experimental</span> </abbr></li><li><a href="/en-US/docs/Web/API/MediaTrackConstraints/volume"><code>volume</code></a><abbr class="icon icon-nonstandard" title="Non-standard. Check cross-browser support before using."> <span class="visually-hidden">Non-standard</span> </abbr><abbr class="icon icon-deprecated" title="Deprecated. Not for use in new websites."> <span class="visually-hidden">Deprecated</span> </abbr></li><li><a href="/en-US/docs/Web/API/MediaTrackConstraints/width"><code>width</code></a></li></ol></details></li><li class="toggle"><details open=""><summary>Related pages for Media Capture and Streams</summary><ol><li><a href="/en-US/docs/Web/API/CanvasCaptureMediaStreamTrack"><code>CanvasCaptureMediaStreamTrack</code></a></li><li><a href="/en-US/docs/Web/API/HTMLCanvasElement/captureStream"><code>HTMLCanvasElement.captureStream()</code></a></li><li><a href="/en-US/docs/Web/API/HTMLMediaElement/captureStream"><code>HTMLMediaElement.captureStream()</code></a></li><li><a href="/en-US/docs/Web/API/InputDeviceInfo"><code>InputDeviceInfo</code></a></li><li><a href="/en-US/docs/Web/API/MediaDeviceInfo"><code>MediaDeviceInfo</code></a></li><li><a href="/en-US/docs/Web/API/MediaDevices"><code>MediaDevices</code></a></li><li><a href="/en-US/docs/Web/API/MediaStream"><code>MediaStream</code></a></li><li><a href="/en-US/docs/Web/API/MediaStreamTrack"><code>MediaStreamTrack</code></a></li><li><a href="/en-US/docs/Web/API/MediaStreamTrackEvent"><code>MediaStreamTrackEvent</code></a></li><li><a href="/en-US/docs/Web/API/MediaTrackSettings"><code>MediaTrackSettings</code></a></li><li><a href="/en-US/docs/Web/API/MediaTrackSupportedConstraints"><code>MediaTrackSupportedConstraints</code></a></li><li><a href="/en-US/docs/Web/API/Navigator/mediaDevices"><code>Navigator.mediaDevices</code></a></li><li><a href="/en-US/docs/Web/API/OverconstrainedError"><code>OverconstrainedError</code></a></li></ol></details></li></ol></div></div><section class="place side"></section></nav></aside><div class="toc-container"><aside class="toc"><nav><div class="document-toc-container"><section class="document-toc"><header><h2 class="document-toc-heading">In this article</h2></header><ul class="document-toc-list"><li class="document-toc-item "><a class="document-toc-link" href="#value">Value</a></li><li class="document-toc-item "><a class="document-toc-link" href="#usage_notes">Usage notes</a></li><li class="document-toc-item "><a class="document-toc-link" href="#examples">Examples</a></li><li class="document-toc-item "><a class="document-toc-link" href="#specifications">Specifications</a></li><li class="document-toc-item "><a class="document-toc-link" href="#browser_compatibility">Browser compatibility</a></li><li class="document-toc-item "><a class="document-toc-link" href="#see_also">See also</a></li></ul></section></div></nav></aside><section class="place side"></section></div></div><main id="content" class="main-content "><article class="main-page-content" lang="en-US"><header><h1>MediaTrackConstraints: displaySurface property</h1><details class="baseline-indicator not"><summary><span class="indicator" role="img" aria-label="Baseline Cross"></span><h2><span class="not-bold">Limited availability</span></h2><div class="browsers"><span class="engine" title="Not widely supported in Chrome, and supported in Edge"><span class="browser chrome " role="img" aria-label="Chrome cross"></span><span class="browser edge supported" role="img" aria-label="Edge check"></span></span><span class="engine" title="Not widely supported in Firefox"><span class="browser firefox " role="img" aria-label="Firefox cross"></span></span><span class="engine" title="Not widely supported in Safari"><span class="browser safari " role="img" aria-label="Safari cross"></span></span></div><span class="icon icon-chevron "></span></summary><div class="extra"><p>This feature is not Baseline because it does not work in some of the most widely-used browsers.</p><ul><li><a href="/en-US/docs/Glossary/Baseline/Compatibility" data-glean="baseline_link_learn_more" target="_blank" class="learn-more">Learn more</a></li><li><a href="#browser_compatibility" data-glean="baseline_link_bcd_table">See full compatibility</a></li><li><a href="https://survey.alchemer.com/s3/7634825/MDN-baseline-feedback?page=%2Fen-US%2Fdocs%2FWeb%2FAPI%2FMediaTrackConstraints%2FdisplaySurface&level=not" data-glean="baseline_link_feedback" class="feedback-link" target="_blank" rel="noreferrer">Report feedback</a></li></ul></div></details></header><div class="section-content"><p>The <a href="/en-US/docs/Web/API/MediaTrackConstraints"><code>MediaTrackConstraints</code></a> dictionary's <strong><code>displaySurface</code></strong> property is a <a href="/en-US/docs/Web/API/MediaTrackConstraints#constraindomstring"><code>ConstrainDOMString</code></a> describing the preferred value for the <a href="/en-US/docs/Web/API/MediaTrackSettings/displaySurface" title="displaySurface"><code>displaySurface</code></a> constrainable property.</p> <p>This is set by the application to identify to the user agent the type of display surface (<code>window</code>, <code>browser</code>, or <code>monitor</code>) preferred by the application. It has no effect on what the user can choose to share, but may be used to present the options in a different order.</p> <p>If needed, you can determine whether or not this constraint is supported by checking the value of <a href="/en-US/docs/Web/API/MediaTrackSupportedConstraints/displaySurface"><code>MediaTrackSupportedConstraints.displaySurface</code></a> as returned by a call to <a href="/en-US/docs/Web/API/MediaDevices/getSupportedConstraints"><code>MediaDevices.getSupportedConstraints()</code></a>. However, typically this is unnecessary since browsers will ignore any constraints they're unfamiliar with.</p></div><section aria-labelledby="value"><h2 id="value"><a href="#value">Value</a></h2><div class="section-content"><p> A <a href="/en-US/docs/Web/API/MediaTrackConstraints#constraindomstring"><code>ConstrainDOMString</code></a> which specifies the type of display surface preferred by the application. This value <em>does not</em> add or remove display sources in the browser's user interface, but may reorder them. You can't use this property to limit the user to a subset of the three display-surface values <code>window</code>, <code>browser</code>, and <code>monitor</code> — but, as you will see below, you can see what was chosen, and reject it. </p> <p>See <a href="/en-US/docs/Web/API/Media_Capture_and_Streams_API/Constraints#how_constraints_are_defined">how constraints are defined</a>.</p> <div class="notecard note"> <p><strong>Note:</strong> You cannot set <a href="/en-US/docs/Web/API/MediaDevices/getDisplayMedia#monitortypesurfaces"><code>monitorTypeSurfaces: "exclude"</code></a> at the same time as <code>displaySurface: "monitor"</code> as the two settings are contradictory. Trying to do so will result in the associated <code>getDisplayMedia()</code> call failing with a <code>TypeError</code>.</p> </div></div></section><section aria-labelledby="usage_notes"><h2 id="usage_notes"><a href="#usage_notes">Usage notes</a></h2><div class="section-content"><p> You can check the setting selected by the user agent after the display media has been created by <a href="/en-US/docs/Web/API/MediaDevices/getDisplayMedia" title="getDisplayMedia()"><code>getDisplayMedia()</code></a> by calling <a href="/en-US/docs/Web/API/MediaStreamTrack/getSettings" title="getSettings()"><code>getSettings()</code></a> on the display media's video <a href="/en-US/docs/Web/API/MediaStreamTrack"><code>MediaStreamTrack</code></a>, then checking the value of the returned <a href="/en-US/docs/Web/API/MediaTrackSettings"><code>MediaTrackSettings</code></a> object's <a href="/en-US/docs/Web/API/MediaTrackSettings/displaySurface" title="displaySurface"><code>displaySurface</code></a> object. </p> <p> For example, if your app prefers not to share a monitor — meaning that there's possibly a non-content backdrop being captured — it can use code similar to this: </p> <div class="code-example"><div class="example-header"><span class="language-name">js</span></div><pre class="brush: js notranslate"><code>let mayHaveBackdropFlag = false; let displaySurface = displayStream .getVideoTracks()[0] .getSettings().displaySurface; if (displaySurface === "monitor") { mayHaveBackdropFlag = true; } </code></pre></div> <p> Following this code, <code>mayHaveBackdrop</code> is <code>true</code> if the display surface contained in the stream is of type <code>monitor</code>. Later code can use this flag to determine whether or not to perform special processing, such as to remove or replace the backdrop, or to "cut" the individual display areas out of the received frames of video. </p></div></section><section aria-labelledby="examples"><h2 id="examples"><a href="#examples">Examples</a></h2><div class="section-content"><p> Here are some example constraints objects for <code>getDisplayMedia()</code> that make use of the <code>displaySurface</code> property. </p> <div class="code-example"><div class="example-header"><span class="language-name">js</span></div><pre class="brush: js notranslate"><code>dsConstraints = { displaySurface: "window" }; // 'browser' and 'monitor' are also possible applyConstraints(dsConstraints); // The user still may choose to share the monitor or the browser, // but we indicated that a window is preferred. </code></pre></div> <p> In addition, see the <a href="/en-US/docs/Web/API/Media_Capture_and_Streams_API/Constraints#example_constraint_exerciser">Constraint exerciser</a> example that demonstrates how constraints are used. </p></div></section><h2 id="specifications"><a href="#specifications">Specifications</a></h2><table class="standard-table"><thead><tr><th scope="col">Specification</th></tr></thead><tbody><tr><td><a href="https://w3c.github.io/mediacapture-screen-share/#dom-mediatrackconstraintset-displaysurface">Screen Capture <br/><small># dom-mediatrackconstraintset-displaysurface</small></a></td></tr></tbody></table><h2 id="browser_compatibility"><a href="#browser_compatibility">Browser compatibility</a></h2><p>BCD tables only load in the browser<noscript> with JavaScript enabled. Enable JavaScript to view data.</noscript></p><section aria-labelledby="see_also"><h2 id="see_also"><a href="#see_also">See also</a></h2><div class="section-content"><ul> <li><a href="/en-US/docs/Web/API/Screen_Capture_API">Screen Capture API</a></li> <li><a href="/en-US/docs/Web/API/Screen_Capture_API/Using_Screen_Capture">Using the Screen Capture API</a></li> <li><a href="/en-US/docs/Web/API/Media_Capture_and_Streams_API/Constraints">Capabilities, constraints, and settings</a></li> <li><a href="/en-US/docs/Web/API/MediaTrackConstraints"><code>MediaTrackConstraints</code></a></li> <li><a href="/en-US/docs/Web/API/MediaDevices/getSupportedConstraints"><code>MediaDevices.getSupportedConstraints()</code></a></li> <li><a href="/en-US/docs/Web/API/MediaTrackSupportedConstraints"><code>MediaTrackSupportedConstraints</code></a></li> </ul></div></section></article><aside class="article-footer"><div class="article-footer-inner"><div class="svg-container"><svg xmlns="http://www.w3.org/2000/svg" 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Content available under <a href="/en-US/docs/MDN/Writing_guidelines/Attrib_copyright_license">a Creative Commons license</a>.</p></div></div></footer></div><script type="application/json" id="hydration">{"url":"/en-US/docs/Web/API/MediaTrackConstraints/displaySurface","doc":{"isMarkdown":true,"isTranslated":false,"isActive":true,"flaws":{},"title":"MediaTrackConstraints: displaySurface property","mdn_url":"/en-US/docs/Web/API/MediaTrackConstraints/displaySurface","locale":"en-US","native":"English (US)","browserCompat":["api.MediaStreamTrack.applyConstraints.displaySurface_constraint"],"baseline":{"baseline":false,"support":{"chrome":"72","edge":"79","firefox":"33","safari":"13"}},"sidebarHTML":"<ol><li class=\"section\"><a href=\"/en-US/docs/Web/API/Media_Capture_and_Streams_API\">Media Capture and Streams API</a></li><li class=\"section\"><a href=\"/en-US/docs/Web/API/MediaTrackConstraints\"><code>MediaTrackConstraints</code></a></li><li class=\"toggle\"><details open=\"\"><summary>Instance properties</summary><ol><li><a href=\"/en-US/docs/Web/API/MediaTrackConstraints/aspectRatio\"><code>aspectRatio</code></a></li><li><a href=\"/en-US/docs/Web/API/MediaTrackConstraints/autoGainControl\"><code>autoGainControl</code></a></li><li><a href=\"/en-US/docs/Web/API/MediaTrackConstraints/channelCount\"><code>channelCount</code></a></li><li><a href=\"/en-US/docs/Web/API/MediaTrackConstraints/deviceId\"><code>deviceId</code></a></li><li><em><code>displaySurface</code> </em></li><li><a href=\"/en-US/docs/Web/API/MediaTrackConstraints/echoCancellation\"><code>echoCancellation</code></a></li><li><a href=\"/en-US/docs/Web/API/MediaTrackConstraints/facingMode\"><code>facingMode</code></a></li><li><a href=\"/en-US/docs/Web/API/MediaTrackConstraints/frameRate\"><code>frameRate</code></a></li><li><a href=\"/en-US/docs/Web/API/MediaTrackConstraints/groupId\"><code>groupId</code></a></li><li><a href=\"/en-US/docs/Web/API/MediaTrackConstraints/height\"><code>height</code></a></li><li><a href=\"/en-US/docs/Web/API/MediaTrackConstraints/latency\"><code>latency</code></a></li><li><a href=\"/en-US/docs/Web/API/MediaTrackConstraints/logicalSurface\"><code>logicalSurface</code></a></li><li><a href=\"/en-US/docs/Web/API/MediaTrackConstraints/noiseSuppression\"><code>noiseSuppression</code></a></li><li><a href=\"/en-US/docs/Web/API/MediaTrackConstraints/sampleRate\"><code>sampleRate</code></a></li><li><a href=\"/en-US/docs/Web/API/MediaTrackConstraints/sampleSize\"><code>sampleSize</code></a></li><li><a href=\"/en-US/docs/Web/API/MediaTrackConstraints/suppressLocalAudioPlayback\"><code>suppressLocalAudioPlayback</code></a><abbr class=\"icon icon-experimental\" title=\"Experimental. Expect behavior to change in the future.\">\n <span class=\"visually-hidden\">Experimental</span>\n</abbr></li><li><a href=\"/en-US/docs/Web/API/MediaTrackConstraints/volume\"><code>volume</code></a><abbr class=\"icon icon-nonstandard\" title=\"Non-standard. Check cross-browser support before using.\">\n <span class=\"visually-hidden\">Non-standard</span>\n</abbr><abbr class=\"icon icon-deprecated\" title=\"Deprecated. Not for use in new websites.\">\n <span class=\"visually-hidden\">Deprecated</span>\n</abbr></li><li><a href=\"/en-US/docs/Web/API/MediaTrackConstraints/width\"><code>width</code></a></li></ol></details></li><li class=\"toggle\"><details open=\"\"><summary>Related pages for Media Capture and Streams</summary><ol><li><a href=\"/en-US/docs/Web/API/CanvasCaptureMediaStreamTrack\"><code>CanvasCaptureMediaStreamTrack</code></a></li><li><a href=\"/en-US/docs/Web/API/HTMLCanvasElement/captureStream\"><code>HTMLCanvasElement.captureStream()</code></a></li><li><a href=\"/en-US/docs/Web/API/HTMLMediaElement/captureStream\"><code>HTMLMediaElement.captureStream()</code></a></li><li><a href=\"/en-US/docs/Web/API/InputDeviceInfo\"><code>InputDeviceInfo</code></a></li><li><a href=\"/en-US/docs/Web/API/MediaDeviceInfo\"><code>MediaDeviceInfo</code></a></li><li><a href=\"/en-US/docs/Web/API/MediaDevices\"><code>MediaDevices</code></a></li><li><a href=\"/en-US/docs/Web/API/MediaStream\"><code>MediaStream</code></a></li><li><a href=\"/en-US/docs/Web/API/MediaStreamTrack\"><code>MediaStreamTrack</code></a></li><li><a href=\"/en-US/docs/Web/API/MediaStreamTrackEvent\"><code>MediaStreamTrackEvent</code></a></li><li><a href=\"/en-US/docs/Web/API/MediaTrackSettings\"><code>MediaTrackSettings</code></a></li><li><a href=\"/en-US/docs/Web/API/MediaTrackSupportedConstraints\"><code>MediaTrackSupportedConstraints</code></a></li><li><a href=\"/en-US/docs/Web/API/Navigator/mediaDevices\"><code>Navigator.mediaDevices</code></a></li><li><a href=\"/en-US/docs/Web/API/OverconstrainedError\"><code>OverconstrainedError</code></a></li></ol></details></li></ol>","sidebarMacro":"APIRef","body":[{"type":"prose","value":{"id":null,"title":null,"isH3":false,"content":"<p>The <a href=\"/en-US/docs/Web/API/MediaTrackConstraints\"><code>MediaTrackConstraints</code></a> dictionary's <strong><code>displaySurface</code></strong> property is a <a href=\"/en-US/docs/Web/API/MediaTrackConstraints#constraindomstring\"><code>ConstrainDOMString</code></a> describing the preferred value for the <a href=\"/en-US/docs/Web/API/MediaTrackSettings/displaySurface\" title=\"displaySurface\"><code>displaySurface</code></a> constrainable property.</p>\n<p>This is set by the application to identify to the user agent the type of display surface (<code>window</code>, <code>browser</code>, or <code>monitor</code>) preferred by the application. It has no effect on what the user can choose to share, but may be used to present the options in a different order.</p>\n<p>If needed, you can determine whether or not this constraint is supported by checking the value of <a href=\"/en-US/docs/Web/API/MediaTrackSupportedConstraints/displaySurface\"><code>MediaTrackSupportedConstraints.displaySurface</code></a> as returned by a call to <a href=\"/en-US/docs/Web/API/MediaDevices/getSupportedConstraints\"><code>MediaDevices.getSupportedConstraints()</code></a>. However, typically this is unnecessary since browsers will ignore any constraints they're unfamiliar with.</p>"}},{"type":"prose","value":{"id":"value","title":"Value","isH3":false,"content":"<p>\n A <a href=\"/en-US/docs/Web/API/MediaTrackConstraints#constraindomstring\"><code>ConstrainDOMString</code></a> which specifies the type of display surface preferred by the application.\n This value <em>does not</em> add or remove display sources in the browser's user interface, but may reorder them. You can't use this property to limit the user to a subset of the three display-surface values <code>window</code>, <code>browser</code>, and <code>monitor</code> — but, as you will see below, you can see what was chosen, and reject it.\n</p>\n<p>See <a href=\"/en-US/docs/Web/API/Media_Capture_and_Streams_API/Constraints#how_constraints_are_defined\">how constraints are defined</a>.</p>\n<div class=\"notecard note\">\n <p><strong>Note:</strong> You cannot set <a href=\"/en-US/docs/Web/API/MediaDevices/getDisplayMedia#monitortypesurfaces\"><code>monitorTypeSurfaces: \"exclude\"</code></a> at the same time as <code>displaySurface: \"monitor\"</code> as the two settings are contradictory. Trying to do so will result in the associated <code>getDisplayMedia()</code> call failing with a <code>TypeError</code>.</p>\n</div>"}},{"type":"prose","value":{"id":"usage_notes","title":"Usage notes","isH3":false,"content":"<p>\n You can check the setting selected by the user agent after the display media has been\n created by <a href=\"/en-US/docs/Web/API/MediaDevices/getDisplayMedia\" title=\"getDisplayMedia()\"><code>getDisplayMedia()</code></a> by calling\n <a href=\"/en-US/docs/Web/API/MediaStreamTrack/getSettings\" title=\"getSettings()\"><code>getSettings()</code></a> on the display media's\n video <a href=\"/en-US/docs/Web/API/MediaStreamTrack\"><code>MediaStreamTrack</code></a>, then checking the value of the returned\n <a href=\"/en-US/docs/Web/API/MediaTrackSettings\"><code>MediaTrackSettings</code></a> object's\n <a href=\"/en-US/docs/Web/API/MediaTrackSettings/displaySurface\" title=\"displaySurface\"><code>displaySurface</code></a> object.\n</p>\n<p>\n For example, if your app prefers not to share a monitor — meaning that there's possibly a non-content backdrop being captured — it can use code similar\n to this:\n</p>\n<div class=\"code-example\"><div class=\"example-header\"><span class=\"language-name\">js</span></div><pre class=\"brush: js notranslate\"><code>let mayHaveBackdropFlag = false;\nlet displaySurface = displayStream\n .getVideoTracks()[0]\n .getSettings().displaySurface;\n\nif (displaySurface === \"monitor\") {\n mayHaveBackdropFlag = true;\n}\n</code></pre></div>\n<p>\n Following this code, <code>mayHaveBackdrop</code> is <code>true</code> if the display\n surface contained in the stream is of type <code>monitor</code>.\n Later code can use this flag to determine whether or not to perform special processing,\n such as to remove or replace the backdrop, or to \"cut\" the individual display areas out\n of the received frames of video.\n</p>"}},{"type":"prose","value":{"id":"examples","title":"Examples","isH3":false,"content":"<p>\n Here are some example constraints objects for <code>getDisplayMedia()</code> that make\n use of the <code>displaySurface</code> property.\n</p>\n<div class=\"code-example\"><div class=\"example-header\"><span class=\"language-name\">js</span></div><pre class=\"brush: js notranslate\"><code>dsConstraints = { displaySurface: \"window\" }; // 'browser' and 'monitor' are also possible\napplyConstraints(dsConstraints);\n// The user still may choose to share the monitor or the browser,\n// but we indicated that a window is preferred.\n</code></pre></div>\n<p>\n In addition, see the\n <a href=\"/en-US/docs/Web/API/Media_Capture_and_Streams_API/Constraints#example_constraint_exerciser\">Constraint exerciser</a> example\n that demonstrates how constraints are used.\n</p>"}},{"type":"specifications","value":{"title":"Specifications","id":"specifications","isH3":false,"specifications":[{"bcdSpecificationURL":"https://w3c.github.io/mediacapture-screen-share/#dom-mediatrackconstraintset-displaysurface","title":"Screen Capture"}],"query":"api.MediaStreamTrack.applyConstraints.displaySurface_constraint"}},{"type":"browser_compatibility","value":{"title":"Browser compatibility","id":"browser_compatibility","isH3":false,"query":"api.MediaStreamTrack.applyConstraints.displaySurface_constraint"}},{"type":"prose","value":{"id":"see_also","title":"See also","isH3":false,"content":"<ul>\n <li><a href=\"/en-US/docs/Web/API/Screen_Capture_API\">Screen Capture API</a></li>\n <li><a href=\"/en-US/docs/Web/API/Screen_Capture_API/Using_Screen_Capture\">Using the Screen Capture API</a></li>\n <li><a href=\"/en-US/docs/Web/API/Media_Capture_and_Streams_API/Constraints\">Capabilities, constraints, and settings</a></li>\n <li><a href=\"/en-US/docs/Web/API/MediaTrackConstraints\"><code>MediaTrackConstraints</code></a></li>\n <li><a href=\"/en-US/docs/Web/API/MediaDevices/getSupportedConstraints\"><code>MediaDevices.getSupportedConstraints()</code></a></li>\n <li><a href=\"/en-US/docs/Web/API/MediaTrackSupportedConstraints\"><code>MediaTrackSupportedConstraints</code></a></li>\n</ul>"}}],"toc":[{"text":"Value","id":"value"},{"text":"Usage notes","id":"usage_notes"},{"text":"Examples","id":"examples"},{"text":"Specifications","id":"specifications"},{"text":"Browser compatibility","id":"browser_compatibility"},{"text":"See also","id":"see_also"}],"summary":"The MediaTrackConstraints dictionary's displaySurface property is a ConstrainDOMString describing the preferred value for the displaySurface constrainable property.","popularity":0.0014,"modified":"2024-07-26T03:44:38.000Z","other_translations":[{"locale":"de","title":"MediaTrackConstraints: displaySurface-Eigenschaft","native":"Deutsch"}],"pageType":"web-api-instance-property","source":{"folder":"en-us/web/api/mediatrackconstraints/displaysurface","github_url":"https://github.com/mdn/content/blob/main/files/en-us/web/api/mediatrackconstraints/displaysurface/index.md","last_commit_url":"https://github.com/mdn/content/commit/cfb7587e3e3122630ad6cbd94d834ecadbe0a746","filename":"index.md"},"short_title":"displaySurface","parents":[{"uri":"/en-US/docs/Web","title":"References"},{"uri":"/en-US/docs/Web/API","title":"Web APIs"},{"uri":"/en-US/docs/Web/API/MediaTrackConstraints","title":"MediaTrackConstraints"},{"uri":"/en-US/docs/Web/API/MediaTrackConstraints/displaySurface","title":"displaySurface"}],"pageTitle":"MediaTrackConstraints: displaySurface property - Web APIs | MDN","noIndexing":false}}</script></body></html>