Arch Linux

hungerfish

Member

Registered: 2009-09-13

Posts: 254

[SOLVED]Firefox + Youtube MSE & H.264 playback not working

Anybody else seeing  this?
Youtube shows MSE & H.264 not working after recent update (1080p vids no longer work):

[2015-07-29 09:51] [ALPM] upgraded libx264 (2:148.20150717-1 -> 2:148.20150725-1)
[2015-07-29 09:51] [ALPM] upgraded ffmpeg (1:2.7.2-1 -> 1:2.7.2-2)

I have all the relevant about:config options toggled as per wiki.
1080p worked fine before the update!

Any ideas?

Last edited by hungerfish (2015-08-12 09:02:15)

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Beetles and bacteria are vastly more successful than humans in terms of survival.

txus

Member

Registered: 2008-01-23

Posts: 78

Re: [SOLVED]Firefox + Youtube MSE & H.264 playback not working

Same here. I don't have much time to watch online videos lately, so I don't know since when I have this error, but when I wanted to watch sth. on youtube last tuesday it didn't play. Being short on time I didn't give it more attention, but this thread means it wasn't an isolated incident on my end...

hungerfish

Member

Registered: 2009-09-13

Posts: 254

Re: [SOLVED]Firefox + Youtube MSE & H.264 playback not working

It's the ffmpeg update. I downgraded both packages just now, and I regained functionality. I then upgraded libx264 keeping ffmpeg at version 1:2.7.2-1 and everything still works. Reupgrading ffmpeg breaks playback again.
So for now downgrade/revert ffmpeg 1:2.7.2-2 -> 1:2.7.2-1!

Good to know its not just me

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Beetles and bacteria are vastly more successful than humans in terms of survival.

txus

Member

Registered: 2008-01-23

Posts: 78

Re: [SOLVED]Firefox + Youtube MSE & H.264 playback not working

And nice to know there is a cause, and a workaround! It seems the update is the enabling of libsoxr for resampling (see here). I'd like to submit a bug, but I'm not quite sure where, since as far as Arch is concerned we actually modified some advanced settings in Firefox, which AFAIK are still in testing upstream. Any recommendations?

fredbezies

Member

Registered: 2011-07-28

Posts: 372

Re: [SOLVED]Firefox + Youtube MSE & H.264 playback not working

Ask for a rebuild or wait for Mozilla Firefox 40 which will be released soon ?

http://release.mozilla.org/planning/201 … edule.html

Until end of 2015, we'll see :

Mozilla Firefox 40 => 2015-08-11
Mozilla Firefox 41 => 2015-09-22
Mozilla Firefox 42 => 2015-11-03
Mozilla Firefox 43 => 2015-12-15

hungerfish

Member

Registered: 2009-09-13

Posts: 254

Re: [SOLVED]Firefox + Youtube MSE & H.264 playback not working

I just opened a ticket:
https://bugs.archlinux.org/task/45854

EDIT:
The above ticket was closed as the maintainers could not reproduce the issue. It was suggested to set "media.fragmented-mp4.gmp" to true as a workaround.
This did not work for me though, instead I could see the html5player on youtube loading, closing(presumably crashing) and then flashplayer loading instead as a fallback.

Whatever the case, since firefox 40.0 html5player on youtube is working fine again for me, so 'fredbezies' you were right in hindsight to just wait

Last edited by hungerfish (2015-08-12 09:01:46)

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Beetles and bacteria are vastly more successful than humans in terms of survival.