poor youtube 4k60fps performance compared to FF Nightly

[PcChip]

Love the project!

Just wanted to report my test against FireFox Nightly:
using the following video: https://www.youtube.com/watch?v=LXb3EKWsInQ
Thorium shows Render/3D at 100% and Video at 0% in intel_gpu_top, and the video drops frames
FF Nightly shows Render/3D at 25% and Video at 25% in intel_gpu_top, and the video is smooth

12th gen Intel CPU on Kubuntu 22.04

[Alex313031]

@PcChip What Thorium version and what platform/OS version.

[PcChip]

should be the latest version of Thorium and the latest version of Kubuntu 22.04

does this help? - https://i.imgur.com/VgSqijU.png

[Alex313031]

@PcChip Yes thanks. What is your CPU?

[PcChip]

12th gen core i5

[Alex313031]

Try latest release and see if it persists. https://github.com/Alex313031/Thorium/releases/tag/M105.0.5183.0

[Alex313031]

@PcChip Hows it coming.

[PcChip]

it seems that both Thorium and regular FireFox render youtube videos as "Render/3D", whereas Firefox Nightly renders it as "Video" according to intel_gpu_top. When rendered as "Render/3D", it is not as smooth and stutters and drops frames.

I assume that's related to FireFox Nightly recently enabling VAAPI by default?

[Alex313031]

@PcChip Thorium has patches to enable VAAPI and VDPAU by default as well as it can. This is strange that it is not working on a new chip on ubuntu.

[goosesima]

Same issue. Graphics Platform: Wayland Processors: 8 × Intel® Core™ i5-8265U CPU @ 1.60GHz Graphics Processor: Mesa Intel® UHD Graphics 620

It uses CPU +50% when decoding video and 0% intel-gpu-top video.

[JadenJSJ]

Solved look at comment below ~~Same issue No video hardware acceleration with Thorium on GNU/Linux Video HW Acel works on on Firefox Stable and on Thorium running on Windows 10~~

Click on dropdown for details

System Information

Plasma KDE w Wayland Manjaro Intel i5-7200U (4) @ 3.100GHz
Intel HD Graphics 620
AMD ATI Radeon R7 M360
If any other information is needed, feel free to ask

GNU/Linux Firefox Stable Latest

Click on image to zoom

GNU/Linux Thorium Latest

Click on image to zoom

Windows 10 Thorium Latest

Click on image to zoom

[JadenJSJ]

I fixed hardware decoding on my instance by clearing the flags on ~/.config/thorium-flags.conf (copied from chrome) and also resetting all thorium flags on chrome://flags

[PcChip]

so on a fresh thorium install on linux, you had to change flags or a config file to make Thorium use hardware video decoding?

[gz83]

I used the latest Intel graphics driver on the Kubutnu 22.04 system to test the browser's hardware acceleration and found that it was normal.

I'm using X11 instead of wayland.

[JadenJSJ]

so on a fresh thorium install on linux, you had to change flags or a config file to make Thorium use hardware video decoding?

No, it works out of the box. I made some changes to the flags at some point or copied it over from my chrome install.

[gz83]

I can confirm HW Accel doesn't work if --ozone-platform=wayland

try to use X11 @JadenJSJ

[JadenJSJ]

try to use X11 @JadenJSJ

I accidentally deleted my previous comment.

HW video Accel works fine out of the box in X11. But 2 finger pinch zoom still doesn't work @gz83

[gz83]

try to use X11 @JadenJSJ

I accidentally deleted my previous comment.

HW video Accel works fine out of the box in X11. But 2 finger pinch zoom still doesn't work @gz83

Hardware acceleration on the Linux platform is currently not available out of the box, and turning on hardware acceleration inevitably requires sacrificing something.

@JadenJSJ