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I'm checking with the developers tools, and with VP9 on youtube, I get Vpx decode, but with H264, I get FFMpeg only.

I'm launching with the flags:

--ignore-gpu-blocklist --use-gl=desktop --enable-features=VaapiVideoDecoder
KPrv
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  • Sounds like a Chrome question. – David Mar 02 '22 at 12:01
  • It is a Chrome question, in Ubuntu. Because I had no such a problem in others operating systems. – KPrv Mar 02 '22 at 12:16
  • So the problem is the version of Chrome being used in Ubuntu still a question for the Chrome people I think. – David Mar 02 '22 at 12:28
  • Well, I used the same version via the official .deb in all of my systems. I'll ask in Chrome forums, but I don't have much hope that anyone care about linux to be honest. – KPrv Mar 02 '22 at 12:56
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    Check if adding this option helps: `--disable-features=UseChromeOSDirectVideoDecoder` I have added it to my `vivaldi` (chrome-based) and looks like it works. – Michal Przybylowicz Mar 02 '22 at 18:56
  • Thanks! That did it, along with the usual flags. – KPrv Mar 03 '22 at 00:25

3 Answers3

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I achieved both VP9 and H.264 (lower CPU load), in Chrome 99 with:

/usr/bin/google-chrome-stable --ignore-gpu-blocklist --disable-features=UseChromeOSDirectVideoDecoder --use-gl=desktop --enable-features=VaapiVideoDecoder %U

Thanks Michal.

KPrv
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  • This worked for me! (chrome v100) and I have Ubuntu 21.10, and a laptop with AMD Ryzen 7 PRO 5850U with Radeon Graphics. `radeontop` shows unknown chip, but it shows a lot of usage when displaying video on youtube. – OlofL Apr 10 '22 at 06:38
  • However, this does not work on my desktop machine with i5-6600K, geforce 1080ti, and ubuntu 22.04 with nvidia driver v510. Chrome does say `Video Decode: Hardware accelerated` but `nvtop` shows GPU is barely used, and CPU usage stays the same. Tested both X and Wayland. – OlofL Apr 10 '22 at 08:31
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Don't be confused by the several decoder names.

VpxVideoDecoder is software decoding as well. You can easily verify this by pressing F12 while a VP9 video is played, to open Development Tools. Let it show the "Media" tab, and you will see "Hardware decoder: False" when VpxVideoDecoder is used.

Gerd
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@KPrv's answer almost worked for me, just had to replace --use-gl=desktop with --use-gl=egl

kiraleos
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  • This does not provide an answer to the question. Once you have sufficient [reputation](https://askubuntu.com/help/whats-reputation) you will be able to [comment on any post](https://askubuntu.com/help/privileges/comment); instead, [provide answers that don't require clarification from the asker](https://meta.stackexchange.com/questions/214173/why-do-i-need-50-reputation-to-comment-what-can-i-do-instead). - [From Review](/review/late-answers/1288447) – David Mar 22 '23 at 17:05
  • @David it's as much of an answer as KPrv's. – RonJohn Apr 02 '23 at 19:27