tor-browser

commit 5a8abaf9c7b582f3f20b5ff6e287eaf688f697c0
parent 9b586cbcf62345f842f1c6c843f60e63dbf8cc35
Author: Syed AbuTalib <lowkey@google.com>
Date:   Fri, 19 Dec 2025 09:18:42 +0000

Bug 2006201 [wpt PR 56759] - Support Matroska MIME types in MediaRecorder, a=testonly

Automatic update from web-platform-tests
Support Matroska MIME types in MediaRecorder

Add explicit support for `video/matroska`, `audio/matroska`, and
`audio/x-matroska` MIME types to `MediaRecorderHandler`.

Previously, `video/x-matroska` was partially supported but was
internally aliased to `video/mp4` for codec verification. This change
removes that alias, allowing Matroska types to be processed natively.

The validation logic in `CanSupportVideoType` and `CanSupportAudioType`
is updated to accept these new MIME strings. Additionally,
`ActualMimeType` is updated to report the correct MIME type instead of
defaulting to WebM or MP4 when these types are used. `TrackRecorder` is
also updated to map these strings to the `kVideoMatroska` container
type.

Bug: 40921769
Change-Id: I911784d885d5f65670f080a22001996ac34e2228
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/7262837
Commit-Queue: Syed AbuTalib <lowkey@google.com>
Reviewed-by: Markus Handell <handellm@google.com>
Cr-Commit-Position: refs/heads/main@{#1560145}

--

wpt-commits: d094f5cc5441a0c644c492fb93430fc2f70bc7d4
wpt-pr: 56759

Diffstat:
M
testing/web-platform/tests/mediacapture-record/MediaRecorder-mimetype.html
 | 
27
++++++++++++++++++++++++++-

1 file changed, 26 insertions(+), 1 deletion(-)
diff --git a/testing/web-platform/tests/mediacapture-record/MediaRecorder-mimetype.html b/testing/web-platform/tests/mediacapture-record/MediaRecorder-mimetype.html
@@ -13,6 +13,8 @@ const AUDIO_ONLY_MIME_TYPES = [
   'audio/mp4',
   'audio/ogg',
   'audio/webm',
+  'audio/matroska',
+  'audio/x-matroska',
 ];
 
 const AUDIO_CODECS_MIME_TYPES = [
@@ -22,12 +24,17 @@ const AUDIO_CODECS_MIME_TYPES = [
   'audio/webm; codecs="opus"',
   'audio/mp4; codecs="mp4a.40.2"',
   'audio/mp4; codecs="opus"',
+  'audio/matroska; codecs="opus"',
+  'audio/matroska; codecs="pcm"',
+  'audio/x-matroska; codecs="opus"',
+  'audio/x-matroska; codecs="pcm"',
 ];
 
 const VIDEO_ONLY_MIME_TYPES = [
   'video/mp4',
   'video/webm',
-  'video/x-matroska'
+  'video/x-matroska',
+  'video/matroska'
 ];
 
 const VIDEO_CODECS_MIME_TYPES = [
@@ -41,6 +48,16 @@ const VIDEO_CODECS_MIME_TYPES = [
   'video/mp4; codecs="hev1.1.6.L186.B0"',
   'video/x-matroska; codecs="hvc1.1.6.L186.B0"',
   'video/x-matroska; codecs="hev1.1.6.L186.B0"',
+  'video/matroska; codecs="vp8"',
+  'video/matroska; codecs="vp9"',
+  'video/matroska; codecs="av1"',
+  'video/matroska; codecs="hvc1.1.6.L186.B0"',
+  'video/matroska; codecs="hev1.1.6.L186.B0"',
+  'video/matroska; codecs="avc1.64003E"',
+  'video/x-matroska; codecs="vp8"',
+  'video/x-matroska; codecs="vp9"',
+  'video/x-matroska; codecs="av1"',
+  'video/x-matroska; codecs="avc1.64003E"',
 ];
 
 const AUDIO_VIDEO_MIME_TYPES = [
@@ -58,6 +75,14 @@ const AUDIO_VIDEO_MIME_TYPES = [
   'video/mp4; codecs="hev1.1.6.L186.B0, opus"',
   'video/x-matroska; codecs="hvc1.1.6.L186.B0, opus"',
   'video/x-matroska; codecs="hev1.1.6.L186.B0, opus"',
+  'video/matroska; codecs="vp9, opus"',
+  'video/matroska; codecs="av1, opus"',
+  'video/matroska; codecs="hvc1.1.6.L186.B0, opus"',
+  'video/matroska; codecs="hev1.1.6.L186.B0, opus"',
+  'video/matroska; codecs="avc1.64003E, opus"',
+  'video/x-matroska; codecs="vp9, opus"',
+  'video/x-matroska; codecs="av1, opus"',
+  'video/x-matroska; codecs="avc1.64003E, opus"',
 ];
 
 const AUDIO_MIME_TYPES = [