Thanks for reviewing! On Tuesday, April 22, 2025 at 7:14:41 PM UTC-7 Domenic Denicola wrote:
> Thanks! LGTM to experiment from M137-M142. > > On Wed, Apr 23, 2025 at 11:13 AM 'Gabriel Brito' via blink-dev < > blin...@chromium.org> wrote: > >> Ok. Added M142 as the final milestone. >> >> On Tuesday, April 22, 2025 at 7:01:37 PM UTC-7 Domenic Denicola wrote: >> >>> Can you also fill in the OT end milestones? (The usual ending would be >>> after 6 milestones, in 142, although earlier is also possible.) >>> >>> On Wed, Apr 23, 2025 at 10:49 AM 'Gabriel Brito' via blink-dev < >>> blin...@chromium.org> wrote: >>> >>>> Ok. I can't seem to be able to regenerate the draft... But, I have >>>> addressed your feedback and updated the chrome status feature page where >>>> necesary. Thanks for the tip about the webtests. I will try to do it soon. >>>> Thanks for the feedback! >>>> >>>> *TAG review request*: >>>> https://github.com/w3ctag/design-reviews/issues/1084 >>>> >>>> *Goals for experimentation*: >>>> Gather feedback from web developers and validate that the current >>>> prototype implementation works as expected. We have added telemetry to >>>> measure how the feature is being exercised by users: >>>> - HTMLMediaElement's: >>>> - # of pauses while hidden >>>> - # of pauses because got hidden during playback >>>> - WebAudio AudioContext's >>>> - # of interruptions while hidden >>>> - # of interruptions because got hidden during playback >>>> >>>> *Experiment milestones*: M137 >>>> >>>> On Tuesday, April 22, 2025 at 2:28:47 AM UTC-7 Domenic Denicola wrote: >>>> >>>> Generally looks good, but there's a few things to tidy up... >>>> >>>> On Tuesday, April 22, 2025 at 5:59:10 AM UTC+9 Chromestatus wrote: >>>> >>>> Contact emails gabrie...@microsoft.com, ste...@microsoft.com >>>> >>>> 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 - i.e. 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 >>>> <https://issues.chromium.org/issues?q=customfield1222907:%22Blink%3EMedia%22> >>>> >>>> >>>> TAG review None >>>> >>>> >>>> It might be worth filing this now to get feedback early. (Not a blocker >>>> for approving the I2E.) >>>> >>>> >>>> >>>> >>>> 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 >>>> >>>> >>>> >>>> Due to https://github.com/GoogleChrome/chromium-dashboard/issues/4155 >>>> (please upvote), this field gets lost when generating emails in Chrome >>>> Status. Could you copy it over for us? >>>> >>>> >>>> >>>> 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 >>>> <https://chromium.googlesource.com/chromium/src/+/main/docs/testing/web_platform_tests.md> >>>> ? 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 >>>> >>>> >>>> You can move these into web platform tests as long as you use the >>>> .tentative naming scheme >>>> <https://web-platform-tests.org/writing-tests/file-names.html>. (Not >>>> blocking for the I2E.) >>>> >>>> >>>> >>>> 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 >>>> >>>> >>>> This one is pretty important: can you fill in the experiment milestones? >>>> >>>> >>>> >>>> >>>> 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 >>>> <https://chromestatus.com>. >>>> >>>> -- >>>> 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+...@chromium.org. >>>> To view this discussion visit >>>> https://groups.google.com/a/chromium.org/d/msgid/blink-dev/f29cc6a5-83b7-4bde-a450-302cb689e88an%40chromium.org >>>> >>>> <https://groups.google.com/a/chromium.org/d/msgid/blink-dev/f29cc6a5-83b7-4bde-a450-302cb689e88an%40chromium.org?utm_medium=email&utm_source=footer> >>>> . >>>> >>> -- >> 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+...@chromium.org. >> > To view this discussion visit >> https://groups.google.com/a/chromium.org/d/msgid/blink-dev/9a248ee6-461e-44c8-91b6-f845a7646ecdn%40chromium.org >> >> <https://groups.google.com/a/chromium.org/d/msgid/blink-dev/9a248ee6-461e-44c8-91b6-f845a7646ecdn%40chromium.org?utm_medium=email&utm_source=footer> >> . >> > -- You received this message because you are subscribed to the Google Groups "blink-dev" group. 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