1711812 - yuv420p10 (10-bit) video h264.mp4 fails to play

Status: NEW

(Core :: Audio/Video: Playback, defect, P3)

Description

[Kelsey Gilbert [:jgilbert]]

Attachment: cq_16_127_235.720p.png.bt709.bt709.tv.yuv420p10.h264.mp4

Other codecs seem fine.
I found this while generating testcases for bug 1459526.

FYI :bryce

Comment 1

[John Lin [:jhlin][:jolin]]

On Mac the VideoToolbox H.264 decoder generates error: kVTVideoDecoderBadDataErr. I guess Apple only supports 10-bit video in H.265/HEVC.
On Windows there is no error when decoding but the image cannot be shown.

Bryce, do you know what might go wrong? Thanks a lot.

Comment 2

[Bryce Seager van Dyk [:bryce] (he/him) - Not reading bugmail]

Acking and holding NI. I don't know off the top of my head why this would fail if the Windows decoder is doing the decode. My primary suspects are

• The Windows decoder is actually failing but doesn't report it.
• Our pipeline isn't handling the 10 bit output correctly.

I don't have time to investigate right now, but will try and take a further look if I get time.

Comment 3

[Jean-Yves Avenard [:jya]]

Neither the Mac nor Windows h264 decoder supports yuv420/10 bits (nor YUV444) ; While ffmpeg on linux would, for consistency between platforms it's disabled there too.

Comment 4

[Kelsey Gilbert [:jgilbert]]

I believe this was the testcase that didn't surface any error or success to JS, which is bad.

Comment 5

[Brad Werth [:bradwerth]]

I will try to make progress on this.

Comment 6

[Brad Werth [:bradwerth]]

I can reproduce on Windows. I'll try to improve behavior here.