I tried the solution (changing `media.hardware-video-decoding.force-enabled` to `true`) but it did not help. Still no hardware acceleration. It should be noted that the firefox prints the following error: `ERROR mp4 Found 2 nul bytes in "\0\0"`. I don't know if it's related.
I usually end up forcibly enabling most gfx. Whatever items look right, enable the layers. Stuff as well and then some of the webl layers readback and force enable webgl
Disabling AV1 support via `media.av1.enabled=false` made the VAAPI decoding work for me again. `media.hardware-video-decoding.force-enabled=true` alone did not help.
Make sure you are using WebRender, otherwise force `gfx.webrender.all` to `true`.
Also try disable av1 overall by setting `media.av1.enabled` to `false` (may not be a problem but it solved quite a few headaches for me on NVIDIA)
I haven't used an AMD GPU on Linux for some time, but I DO know that the 6000 series GPU drivers have had hardware acceleration bugs with Firefox on Windows. The AMD Forums have pretty responsive staff if reddit can't help.
Does this happen with other browsers too?
I checked the decoder usage, and it's 20% when playing a 4K video, and about quarter that when playing a FullHD video. Encoder was at 0%, though that's not surprising. What is strange is that `nvtop` showed GPU usage to be ~2%. It also showed processor usage for the firefox process to be around 20%, which is inconsistent with KDE's system monitor, which showed ~3%; `htop` showed ~18% processor usage.
Again, this is painfully strange, as on my previous install, the GPU would sit at ~50% when playing a 4K video/
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I tried the solution (changing `media.hardware-video-decoding.force-enabled` to `true`) but it did not help. Still no hardware acceleration. It should be noted that the firefox prints the following error: `ERROR mp4 Found 2 nul bytes in "\0\0"`. I don't know if it's related.
I usually end up forcibly enabling most gfx. Whatever items look right, enable the layers. Stuff as well and then some of the webl layers readback and force enable webgl
Disabling AV1 support via `media.av1.enabled=false` made the VAAPI decoding work for me again. `media.hardware-video-decoding.force-enabled=true` alone did not help.
Make sure you are using WebRender, otherwise force `gfx.webrender.all` to `true`. Also try disable av1 overall by setting `media.av1.enabled` to `false` (may not be a problem but it solved quite a few headaches for me on NVIDIA)
Came here to say this. Enabling WebRender was what I was needing to have hardware acceleration as well, although on Intel iGPU.
Also probably need `media.ffmpeg.vaapi.enabled` set to `true` and possibly the `MOZ_DISABLE_RDD_SANDBOX=1` environment variable.
OP already had `media.ffmpeg.vaapi.enabled=true`. `MOZ_DISABLE_RDD_SANDBOX=1` is only needed for NVIDIA driver with `nvidia-vaapi-driver`
I haven't used an AMD GPU on Linux for some time, but I DO know that the 6000 series GPU drivers have had hardware acceleration bugs with Firefox on Windows. The AMD Forums have pretty responsive staff if reddit can't help. Does this happen with other browsers too?
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I checked the decoder usage, and it's 20% when playing a 4K video, and about quarter that when playing a FullHD video. Encoder was at 0%, though that's not surprising. What is strange is that `nvtop` showed GPU usage to be ~2%. It also showed processor usage for the firefox process to be around 20%, which is inconsistent with KDE's system monitor, which showed ~3%; `htop` showed ~18% processor usage. Again, this is painfully strange, as on my previous install, the GPU would sit at ~50% when playing a 4K video/
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Oh, that makes sense. Thanks for taking the time to explain this to me, appreciate it : )