Contact emailswolen...@chromium.org

Explainer
https://github.com/wolenetz/mse-for-webcodecs/blob/main/explainer.md

Specification

Design docs
https://github.com/wolenetz/mse-for-webcodecs/blob/main/explainer.md

Summary

Extends the Media Source Extensions API (MSE) to enable buffering
containerless WebCodecs encoded media chunks with MSE for low-latency
buffering and seekable playback.


Blink componentBlink>Media
<https://bugs.chromium.org/p/chromium/issues/list?q=component:Blink%3EMedia>

TAG reviewhttps://github.com/w3ctag/design-reviews/issues/576

TAG review statusPending

Risks


Interoperability and Compatibility



Gecko: No signal

WebKit: No signal

Web developers: No signals


Goals for experimentation

Evaluate API shape for usability and resolve open questions [1]. [1]
https://github.com/wolenetz/mse-for-webcodecs/blob/main/explainer.md#open-questions--notes--links


Reason this experiment is being extended

n/a


Ongoing technical constraints

None.


Debuggability

Feature consists of new WebIDL methods to existing interfaces and are
covered by basic tooling.


Will this feature be supported on all six Blink platforms (Windows, Mac,
Linux, Chrome OS, Android, and Android WebView)?Yes

This feature depends on both MSE and WebCodecs, both of which are on all
Blink platforms.


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--enable-blink-features=MediaSourceExtensionsForWebCodecs

Requires code in //chrome?False

Tracking bughttps://bugs.chromium.org/p/chromium/issues/detail?id=1144908

Estimated milestones
OriginTrial desktop last 99
OriginTrial desktop first 95
DevTrial on desktop 89
OriginTrial android last 99
OriginTrial android first 95
DevTrial on android 89
DevTrial on Webview 89

Link to entry on the Chrome Platform Status
https://www.chromestatus.com/feature/5649291471224832

Links to previous Intent discussionsIntent to prototype:
https://groups.google.com/a/chromium.org/g/blink-dev/c/bejy1nmoWmU/m/CQ90X3j5BQAJ


This intent message was generated by Chrome Platform Status
<https://www.chromestatus.com/>.

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