Branch: refs/heads/main
Home: https://github.com/WebKit/WebKit
Commit: ada444cba9efa29f558720f887d8812b4921c576
https://github.com/WebKit/WebKit/commit/ada444cba9efa29f558720f887d8812b4921c576
Author: Youenn Fablet <[email protected]>
Date: 2026-09-23 (Wed, 23 Sep 2026)
Changed paths:
M Source/WebCore/Modules/webcodecs/WebCodecsVideoDecoder.h
M Source/WebCore/Modules/webcodecs/WebCodecsVideoEncoder.h
Log Message:
-----------
Bump WebCodecs video encoder/decoder message queue max size to 16
rdar://188165426
https://bugs.webkit.org/show_bug.cgi?id=324943
Reviewed by Jean-Yves Avenard.
macOS H264 SW encoder can buffer up to 16 frames.
The max message queue size was set to 4.
In case of using macOS H264 SW encoder, a web page that sends 10 frames and
calls flush would hang.
The reason is that the encoder would buffer 4 frames and WebCodecs would have
its message queue saturated.
That would prevent to send the 6 remaining frames and call flush.
To prevent this, we increase the max queue size to 16.
A follow-up patch should probably let the internal encoder/decoder tell
WebCodecs what the max queue size should be.
* Source/WebCore/Modules/webcodecs/WebCodecsVideoDecoder.h:
* Source/WebCore/Modules/webcodecs/WebCodecsVideoEncoder.h:
Canonical link: https://commits.webkit.org/321682@main
To unsubscribe from these emails, change your notification settings at
https://github.com/WebKit/WebKit/settings/notifications
