debian firefox and whonix torbrowser can no longer play videos in fullscreen and freeze

[raah...@gmail.com]

If i go to youtube click the fullscreen button on the player, the browser goes fullscreen but not the video, and the browser becomes unresponsive.

This is the exact same issue that has always been present with fedora's firefox on qubes. Something has changed now in debian around the time they dropped iceweasel for firefox esr. The same issue now also happens in torbrowser. I don't know why this happens.

[jkitt]

The same happens with me. i suspect hardware acceleration. It can be switched off in flash with:

sudo su
mkdir /etc/adobe && echo "EnableLinuxHWVideoDecode = 0" > /etc/adobe/mms.cfg

Restart the browser.

For HTML5 videos (YouTube) the media.* configs are for controlling HTML5 decoding extensions. Particularly "media.hardware-video-decoding.enabled" although is still can't seem to fullscreen HTML5 videos without it glitching my browser - I wonder if anyone else has fixed this?

[Marek Marczykowski-Górecki]

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On Mon, Jun 20, 2016 at 03:32:25PM -0700, jkitt wrote:
> The same happens with me. i suspect hardware acceleration. It can be
> switched off in flash with:
>
> sudo su
> mkdir /etc/adobe && echo "EnableLinuxHWVideoDecode = 0" > /etc/adobe/mms.cfg
>
> Restart the browser.
>
> For HTML5 videos (YouTube) the media.* configs are for controlling HTML5
> decoding extensions. Particularly "media.hardware-video-decoding.enabled"
> although is still can't seem to fullscreen HTML5 videos without it
> glitching my browser - I wonder if anyone else has fixed this?

I think it's unrelated to video at all. The same happens when you switch
to fullscreen firefox itself (by pressing F11).

https://github.com/QubesOS/qubes-issues/issues/1502

- --
Best Regards,
Marek Marczykowski-Górecki
Invisible Things Lab
A: Because it messes up the order in which people normally read text.
Q: Why is top-posting such a bad thing?
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[Albin Otterhäll]

Marek Marczykowski-Górecki:

> I think it's unrelated to video at all. The same happens when you switch
> to fullscreen firefox itself (by pressing F11).

Chromium in Debian works flawless. It's something with Firefox.