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Explainer https://github.com/MicrosoftEdge/MSEdgeExplainers/blob/main/IframeMediaPause/iframe_media_pausing.md Specification None Summary Adds a "media-playback-while-not-rendered" permission policy to allow embedder websites to pause media playback of embedded iframes which aren't rendered - ie have their "display" property set to "none". This should allow developers to build more user-friendly experiences and to also improve the performance by letting the browser handle the playback of content that is not visible to users. Blink component Blink>Media TAG review None TAG review status Pending Origin Trial documentation link https://github.com/MicrosoftEdge/MSEdgeExplainers/blob/main/IframeMediaPause/iframe_media_pausing.md Risks Interoperability and Compatibility This feature is still being discussed with other browser vendors and the shape and functionality might not be final. Gecko: No signal (https://github.com/mozilla/standards-positions/issues/1082) WebKit: No signal (https://github.com/WebKit/standards-positions/issues/409) Web developers: Positive (https://github.com/whatwg/html/issues/10208) The web community seems to be interested in this feature, even though we may need to iterate on the user-facing API. Other signals: Ergonomics This feature will be used with other audio rendering API's, like HTMLMediaElement and Web Audio. This new behavior should only take effect if web pages explicitly opt-in by overriding the permission policy's default state. Moreover, once the permission policy is used, it should help Chromium to be more optimized by pausing audio rendering for content that is not visible for the user. Activation Developers need to opt-in by setting "allow" property of an iframe. For example: <iframe src="https://foo.media.com"; allow="media-playback-while-not-visible 'none'"></iframe> WebView application risks Does this intent deprecate or change behavior of existing APIs, such that it has potentially high risk for Android WebView-based applications? None Goals for experimentation Ongoing technical constraints None Debuggability None Will this feature be supported on all six Blink platforms (Windows, Mac, Linux, ChromeOS, Android, and Android WebView)? Yes Is this feature fully tested by web-platform-tests? Yes We have implemented Blink webtests. But they are not WPT's yet. - https://source.chromium.org/chromium/chromium/src/+/main:third_party/blink/web_tests/media/media-playback-while-not-visible-permission-policy-cant-play-if-hidden.html?q=third_party%2Fblink%2Fweb_tests%2Fmedia%2Fmedia-playback-while-not-visible-permission-policy-cant-play-if-hidden.html&ss=chromium%2Fchromium%2Fsrc -https://source.chromium.org/chromium/chromium/src/+/main:third_party/blink/web_tests/media/media-playback-while-not-visible-permission-policy-pause-when-hidden.html DevTrial instructions https://github.com/MicrosoftEdge/MSEdgeExplainers/blob/main/IframeMediaPause/iframe_media_pausing.md#proposed-solution-media-playback-while-not-visible-permission-policy Flag name on about://flags None Finch feature name MediaPlaybackWhileNotVisiblePermissionPolicy,AudioContextInterruptedState Requires code in //chrome? False Tracking bug https://issues.chromium.org/issues/351354996 Estimated milestones DevTrial on desktop 133 Link to entry on the Chrome Platform Status https://chromestatus.com/feature/5082950457884672?gate=5165819033288704 Links to previous Intent discussions Intent to Prototype: https://groups.google.com/a/chromium.org/d/msgid/blink-dev/PH7PR00MB1638C5FA59458CE0BBDC1FA6D5D72%40PH7PR00MB1638.namprd00.prod.outlook.com This intent message was generated by Chrome Platform Status. -- You received this message because you are subscribed to the Google Groups "blink-dev" group. To unsubscribe from this group and stop receiving emails from it, send an email to blink-dev+unsubscr...@chromium.org. To view this discussion visit https://groups.google.com/a/chromium.org/d/msgid/blink-dev/6806b191.170a0220.2f866a.0286.GAE%40google.com.
