Yoav, in WebRTC land "we have a sample for that" (thanks to the one and only WebRTC devrel guy Sam Dutton, I think I stole this tagline from him)! https://webrtc.github.io/samples/src/content/getusermedia/record/ with recent changes to improve MP4 support.
Discovery currently happens with isTypeSupported but it seems the WG just decided to deprecate that: https://github.com/w3c/mediacapture-record/issues/202#issuecomment-1956065141 (not sure how I feel about that, I'd rather nuke MediaRecorder entirely in favor of WebCodecs + IndexedDB) Am Do., 29. Feb. 2024 um 09:13 Uhr schrieb Yoav Weiss (@Shopify) < yoavwe...@chromium.org>: > > > On Thu, Feb 29, 2024 at 1:46 AM 'Sunggook Chue' via blink-dev < > blink-dev@chromium.org> wrote: > >> Here is an explainer, summary only. >> >> >> https://docs.google.com/document/d/1WV795DHY3Jf2p_htuAKZ9DXUefiGdQs29mCb8vRiHt8/edit?usp=sharing > > > Thanks! That's very useful! :) > > What's the feature detection story? How can developers know which formats > are supported? > > >> >> >> On Wednesday, February 28, 2024 at 7:53:29 AM UTC-8 yoav...@chromium.org >> wrote: >> >>> On Tue, Feb 27, 2024 at 1:45 AM Mike Taylor <mike...@chromium.org> >>> wrote: >>> >>>> >>>> On 2/22/24 9:21 PM, 'Sunggook Chue' via blink-dev wrote: >>>> >>>> Contact emails >>>> >>>> sun...@microsoft.com >>>> >>>> dalec...@chromium.com (reviewer and mentor). >>>> >>>> Explainer >>>> >>>> https://www.w3.org/TR/mediastream-recording/ >>>> >>>> That's not an explainer.. >>> Could you maybe write a short (inline?) explainer that outlines what it >>> is that we want to ship, what it would help developers achieve, how we >>> envision them using this feature, etc.? >>> >>> >>>> >>>> Specification >>>> >>>> https://www.w3.org/TR/mediastream-recording/ >>>> >>>> Summary >>>> >>>> Adds support for muxing audio/video into MP4 containers with >>>> MediaRecorder. >>>> >>>> Developers can record media format, container, with MP4 of H264 video >>>> and AAC audio codecs in the MediaRecorder API. >>>> >>>> >>>> Blink component >>>> >>>> Blink::MediaRecording >>>> >>>> TAG review >>>> TAG review status >>>> Risks >>>> >>>> No Additional risks on existing containers such as webm. >>>> >>>> Interoperability and Compatibility >>>> >>>> This is missing vendor and developer signals - can you add (or request) >>>> them please? >>>> >>>> Ergonomics >>>> >>>> N/A >>>> >>>> >>>> Activation >>>> >>>> Unchallenging to use. >>>> >>>> >>>> Security >>>> >>>> N/A >>>> >>>> >>>> WebView Application Risks >>>> >>>> N/A >>>> >>>> >>>> Debuggability >>>> >>>> Developers can see the API failure on DevTools. >>>> >>>> Is this feature fully tested by web-platform-tests >>>> <https://chromium.googlesource.com/chromium/src/+/master/docs/testing/web_platform_tests.md> >>>> ? >>>> >>>> Yes >>>> >>>> Flag name >>>> >>>> MediaRecorderEnableMp4Muxer >>>> >>>> Tracking bug >>>> >>>> https://issues.chromium.org/issues/40127044 >>>> >>>> Launch bug >>>> >>>> https://issues.chromium.org/issues/40127044 >>>> >>>> Sample links >>>> >>>> https://webrtc.github.io/samples/src/content/getusermedia/record/ >>>> >>>> Estimated milestones >>>> >>>> Dev Trial on Desktop: 120 >>>> >>>> >>>> Link to entry on the Chrome Platform Status >>>> >>>> https://chromestatus.com/feature/5163469011943424 >>>> >>>> Links to previous Intent discussions >>>> >>>> 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 on the web visit >>>> https://groups.google.com/a/chromium.org/d/msgid/blink-dev/1dd6d89b-34f4-4f18-b3e8-c1309d479530n%40chromium.org >>>> <https://groups.google.com/a/chromium.org/d/msgid/blink-dev/1dd6d89b-34f4-4f18-b3e8-c1309d479530n%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 on the web visit >>>> https://groups.google.com/a/chromium.org/d/msgid/blink-dev/8119a014-24b2-487e-bbbd-324c1bf77081%40chromium.org >>>> <https://groups.google.com/a/chromium.org/d/msgid/blink-dev/8119a014-24b2-487e-bbbd-324c1bf77081%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+unsubscr...@chromium.org. >> To view this discussion on the web visit >> https://groups.google.com/a/chromium.org/d/msgid/blink-dev/dc2463e3-ef73-46ff-888e-23c8a9e446b1n%40chromium.org >> <https://groups.google.com/a/chromium.org/d/msgid/blink-dev/dc2463e3-ef73-46ff-888e-23c8a9e446b1n%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+unsubscr...@chromium.org. > To view this discussion on the web visit > https://groups.google.com/a/chromium.org/d/msgid/blink-dev/CAOmohSLqrnt2T_DvaBtdOJKi3x2jT%2BzU4BShATkzGFf%2BuUV4VA%40mail.gmail.com > <https://groups.google.com/a/chromium.org/d/msgid/blink-dev/CAOmohSLqrnt2T_DvaBtdOJKi3x2jT%2BzU4BShATkzGFf%2BuUV4VA%40mail.gmail.com?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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