1329824 - Add pref to disable too-high res check on Windows

Status: RESOLVED FIXED

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

Description

[Gerald Squelart (he/him) (not at Mozilla since 2022-09-15)]

Bug 1176218 introduced a hard-coded check for high resolutions:
https://hg.mozilla.org/mozilla-central/rev/4429c8701a84
This was based on Microsoft's documentation stating that it can at most handle 4096x2304 in Win>7, and other similar constraints:
https://msdn.microsoft.com/en-us/library/windows/desktop/dd797815(v=vs.85).aspx

This obviously prevents 8K videos from playing on Windows.
But we should allow an escape hatch for people living on the edge, and just testing, in case Windows can in fact handle 8K (maybe it really depends on the installed drivers?)

So I will add a preference to disable this check.

Comment 1

[Gerald Squelart (he/him) (not at Mozilla since 2022-09-15)]

Attachment: Bug 1329824 - media.wmf.allow-unsupported-resolutions -

Review commit: https://reviewboard.mozilla.org/r/104780/diff/#index_header
See other reviews: https://reviewboard.mozilla.org/r/104780/

Comment 2

[Jean-Yves Avenard [:jya]]

Comment on attachment 8826985 [details]
Bug 1329824 - media.wmf.allow-unsupported-resolutions -

https://reviewboard.mozilla.org/r/104780/#review105512

Comment 3

[Pulsebot]

Pushed by [e-mail]:
https://hg.mozilla.org/integration/autoland/rev/92383422009d
media.wmf.allow-unsupported-resolutions - r=jya

Comment 4

[Carsten Book [:Tomcat]]

https://hg.mozilla.org/mozilla-central/rev/92383422009d

Comment 5

[xjbciq56]

thanks a lot for this.

anyway, for me it doesn't seem to work. as soon as i set 

media.wmf.allow-unsupported-resolutions

to true firefox cannot play h264 videos anymore, at least @youtube.

their test site https://www.youtube.com/html5 clearly shows both H.264 and MSE & H.264 get disabled.
as soon as i set the pref back to false the h264 support is backagain.

tested with 53.0a2 (2017-01-26) (32-Bit) on windows 7 in a fresh profile.