Closed Bug 1496222 Opened 2 years ago Closed 2 years ago

ffvp9 fails to decode some VP9 files

Categories

(Core :: Audio/Video: Playback, enhancement, P2)

enhancement

Tracking

()

RESOLVED FIXED
mozilla64
Tracking Status
firefox64 --- fixed

People

(Reporter: jya, Assigned: jya)

References

()

Details

Attachments

(1 file)

Those files:
https://jyavenard.github.io/htmltests/mediatest/webm/vp9/yuv420p12.webm
https://jyavenard.github.io/htmltests/mediatest/webm/vp9/yuv422p10.webm
https://jyavenard.github.io/htmltests/mediatest/webm/vp9/yuv422p12.webm

Fail to play with ffmpeg.

They are made of a single frame.

That frame is passed to avcodec_decode_video2 (https://searchfox.org/mozilla-central/source/dom/media/platforms/ffmpeg/FFmpegVideoDecoder.cpp#219)
it will use all bytes, but doesn't return any frame.

Then the decoder is drained, feeding null/zero to avcodec_decode_video2 which returns -1 

Draining should never return -1.
If I disable MT decoding (by setting mCodecContext->thread_count = 1)
then the first avcodec_decode_video2 returns 1
Assignee: nobody → jyavenard
Rank: 10
Priority: -- → P2
Pushed by jyavenard@mozilla.com:
https://hg.mozilla.org/integration/autoland/rev/44cc1c10c530
Add missing pixel format in FFmpeg decoder r=padenot
https://hg.mozilla.org/mozilla-central/rev/44cc1c10c530
Status: NEW → RESOLVED
Closed: 2 years ago
Resolution: --- → FIXED
Target Milestone: --- → mozilla64
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