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CentOS Stream and RHEL Flatpak Firefox 88: Facebook videos play at more or less 15fps, but audio is fine

user3766795
user3766795
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While youtube videos is flawless, facebook videos seem to play at 15fps. Audio plays flawlessly though.. It happens with both CentOS and RHEL. I'm using the flatpak version of firefox 88. Tried with safe mode, same issue. Tried with disabled hardware acceleration, same issue. Tried with both HWA disabled and Safe mode, same issue. It's a little weird that videos are flawless in brave browser..

Is there some obscure setting in about:config that I can fiddle with?

While youtube videos is flawless, facebook videos seem to play at 15fps. Audio plays flawlessly though.. It happens with both CentOS and RHEL. I'm using the flatpak version of firefox 88. Tried with safe mode, same issue. Tried with disabled hardware acceleration, same issue. Tried with both HWA disabled and Safe mode, same issue. It's a little weird that videos are flawless in brave browser.. Is there some obscure setting in about:config that I can fiddle with?

Chosen solution

found out that flatpak firefox needs ffmpeg installed on the runtime with the following command:

sudo flatpak install flathub org.freedesktop.Platform.ffmpeg-full/x86_64/19.08 org.freedesktop.Platform.ffmpeg-full/x86_64/20.08

videos works great!

source: https://www.reddit.com/r/Fedora/comments/k7s9xu/firefox_choppy_video_playback_on_fedora_33_amd_gpu/gevfk1u?utm_source=share&utm_medium=web2x&context=3

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user3766795
user3766795 Question owner
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Chosen Solution

found out that flatpak firefox needs ffmpeg installed on the runtime with the following command:

sudo flatpak install flathub org.freedesktop.Platform.ffmpeg-full/x86_64/19.08 org.freedesktop.Platform.ffmpeg-full/x86_64/20.08

videos works great!

source: https://www.reddit.com/r/Fedora/comments/k7s9xu/firefox_choppy_video_playback_on_fedora_33_amd_gpu/gevfk1u?utm_source=share&utm_medium=web2x&context=3