Branch: refs/heads/main
Home: https://github.com/WebKit/WebKit
Commit: 4abe3550323a0846d5f459d8beea6ff70a743934
https://github.com/WebKit/WebKit/commit/4abe3550323a0846d5f459d8beea6ff70a743934
Author: Jean-Yves Avenard <[email protected]>
Date: 2026-10-07 (Wed, 07 Oct 2026)
Changed paths:
A LayoutTests/http/wpt/webcodecs/av1-encoder-bit-depth-expected.txt
A LayoutTests/http/wpt/webcodecs/av1-encoder-bit-depth.html
M LayoutTests/platform/glib/TestExpectations
M Source/WebCore/platform/VideoEncoder.cpp
Log Message:
-----------
WebCodecs AV1 encoder accepts 10-bit, 12-bit, monochrome and 4:4:4/4:2:2
codec strings but always encodes 8-bit 4:2:0
https://bugs.webkit.org/show_bug.cgi?id=325906
rdar://188882755
Reviewed by Youenn Fablet.
WebCodecsVideoEncoder accepted any codec string starting with "av01.0", and on
Cocoa the encoder
is libwebrtc's libaom wrapper, which sets an 8-bit input depth and is built
without
CONFIG_AV1_HIGHBITDEPTH. Codec strings requesting 10-bit, 12-bit, monochrome or
non-4:2:0 chroma
were reported as supported and produced an 8-bit 4:2:0 stream.
VideoEncoder::createLocalEncoder() now parses AV1 codec strings with
parseAV1CodecParameters() and
fails to create the libwebrtc encoder unless they describe 8-bit 4:2:0, so
isConfigSupported()
reports them as unsupported and configure() fails. The GStreamer encoder is
unchanged.
* LayoutTests/http/wpt/webcodecs/av1-encoder-bit-depth-expected.txt: Added.
* LayoutTests/http/wpt/webcodecs/av1-encoder-bit-depth.html: Added.
* LayoutTests/platform/glib/TestExpectations:
* Source/WebCore/platform/VideoEncoder.cpp:
(WebCore::VideoEncoder::createLocalEncoder): Reject AV1 codec strings that are
not 8-bit 4:2:0.
Canonical link: https://commits.webkit.org/322975@main
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