1838333 - Should we relax the WMF H264 resolution requirements some more?

Status: RESOLVED FIXED

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

Description

[Thomas Wisniewski [:twisniewski]]

A user report on webcompat.com states that Edge is able to play videos of 3500x3000 resolution on the NSFW site in the link, while Firefox cannot. They get the same error we saw in bug 1422239:

Details: mozilla::MediaResult __cdecl mozilla::WMFVideoMFTManager::ValidateVideoInfo(void):
Can't decode H.264 stream because its resolution is out of the maximum limitation

I see the 4K limit was set to 4096 * 2304 pixels, as per an MSDN article. However, if Edge is able to play those files, perhaps we should revisit this and find out why.

Comment 1

[cloakengaged]

Ive also had this issue with one of my older PCs with no external gpu.

Firefox would occasionaly lag and freeze on 4K dailymotion.com videos that uses h264/avc codec.

Chrome/ium browsers were smooth.

Comment 2

[Alastor Wu [:alwu]]

That restriction was made long time ago, and the video playback technology has been changed a lot. I think it makes sense to cancel this restriction. I will do it on next version.

Comment 3

[Alastor Wu [:alwu]]

Attachment: Bug 1838333 - enable 'media.wmf.allow-unsupported-resolutions' by default.

This restriction [1] was made long time ago, and the video playback
technology has been changed a lot. It makes sense to cancel this
restriction now.

[1] https://searchfox.org/mozilla-central/rev/7279a1df13a819be254fd4649e07c4ff93e4bd45/dom/media/platforms/wmf/WMFVideoMFTManager.cpp#163-182

Comment 4

[Pulsebot]

Pushed by [e-mail]:
https://hg.mozilla.org/integration/autoland/rev/f6a14b489662
enable 'media.wmf.allow-unsupported-resolutions' by default. r=media-playback-reviewers,padenot

Comment 5

[pstanciu]

https://hg.mozilla.org/mozilla-central/rev/f6a14b489662