Panfrost for Bifrost GPUs - Big improvements

SickOS · 13 December 2020 20:02

I have bifrost G31 with mesa-git 21.0 and dropped frames are zero for decoding and zero for output, playing 1080p video.

SickOS · 13 December 2020 22:26

Here my test with your video

[root@inuyasha jon]# mpv Wolverine Adamantium Scene | X-Men Origins Wolverine (2009) Movie Clip - YouTube
(+) Video --vid=1 () (h264 1280x720 60.000fps)
(+) Audio --aid=1 --alang=eng () (opus 2ch 48000Hz)
Subs --sid=1 --slang=de ‘vtt’ (webvtt) (external)
Subs --sid=2 --slang=en ‘vtt’ (webvtt) (external)
Subs --sid=3 --slang=en-GB ‘vtt’ (webvtt) (external)
Subs --sid=4 --slang=es-419 ‘vtt’ (webvtt) (external)
Subs --sid=5 --slang=fr-CH ‘vtt’ (webvtt) (external)
Subs --sid=6 --slang=it ‘vtt’ (webvtt) (external)
Subs --sid=7 --slang=ru ‘vtt’ (webvtt) (external)
Subs --sid=8 --slang=zh-CN ‘vtt’ (webvtt) (external)
error: XDG_RUNTIME_DIR not set in the environment.
AO: [alsa] 48000Hz stereo 2ch float
VO: [gpu] 1280x720 yuv420p
AV: 00:01:19 / 00:03:13 (41%) A-V: 0.001 Dropped: 365 Cache: 90s/29MB
[ffmpeg] tls: Error in the pull function.
[ffmpeg] https: Will reconnect at 2719728 in 0 second(s), error=Input/output error.
AV: 00:03:04 / 00:03:13 (95%) A-V: 0.003 Dropped: 658 Cache: 9.4s/622KB

JFL · 14 December 2020 16:38

GTKPro has S922X SOC with Bifrost G52. Panfrost and meson_vdec seems to support Bifrost-G31 way better than G52 at the moment.

SickOS · 22 March 2021 19:24

Have we now got hardware video decoding? I have now half cpu usage with mpv - - hwdec=auto-copy and reports is using v4l2m2m-copy hardware decoding.

Kernel linux-vim 5.11.4… 1

spikerguy · 22 March 2021 22:04

I doubt that unless you’re using ffmpeg-m2m pkg which i have built from chewitts ffmpeg source which have v4l2_m2m support for amlogic vdec which can handle mpeg2 , h264 and vp8. Seeking is a bit of hit and miss though.

I have noticed that h264 and h265 takes very less cpu load i think that must be coz of gpu load got offloaded from cpu.

I will try this mpv - - hwdec=auto-copy and get back to you.
Thanks for reporting

JFL · 23 March 2021 09:00

I am on XFCE linux-vim 5.11.4-1 with mesa-git (Panfrost) and tried mpv video file and mpv --hwdec=v4l2m2m-copy. mpv hwdec=v4l2m2m-copy does seems to reduce the cpu usage a bit (can’t quantify) but the CPU temp does drop around 4C.

jfl@MNJROGTKPro ~]$ mpv --hwdec=v4l2m2m-copy Wolverine Adamantium Scene | X-Men Origins Wolverine (2009) Movie Clip - YouTube

 (+) Video --vid=1 (*) (h264 1280x720 60.000fps)
 (+) Audio --aid=1 --alang=eng (*) (aac 2ch 44100Hz)
     Subs  --sid=1 --slang=de 'vtt' (webvtt) (external)
     Subs  --sid=2 --slang=en 'vtt' (webvtt) (external)
     Subs  --sid=3 --slang=en-GB 'vtt' (webvtt) (external)
     Subs  --sid=4 --slang=es-419 'vtt' (webvtt) (external)
     Subs  --sid=5 --slang=fr-CH 'vtt' (webvtt) (external)
     Subs  --sid=6 --slang=it 'vtt' (webvtt) (external)
     Subs  --sid=7 --slang=ru 'vtt' (webvtt) (external)
     Subs  --sid=8 --slang=zh-CN 'vtt' (webvtt) (external)
AO: [pulse] 44100Hz stereo 2ch float
Using hardware decoding (v4l2m2m-copy).
VO: [gpu] 1280x720 nv12
(Paused) AV: 00:03:06 / 00:03:13 (96%) A-V:  0.000 Dropped: 136 Cache: 6.6s/543K

Similarly on a [jfl@MNJROGTKPro ~]$ mpv --hwdec=v4l2m2m Unity Engine Demo Short Film (1440p) - YouTube. 1440p/30 VP9, CPU usage is also lower.

mpv --hwdec=v4l2m2m-copy does not seems to work with 1440p/30 video file.

@spikerguy, Looking forward to your ffmpeg-m2m pkg.

SickOS · 23 March 2021 10:04

I understand you notice less cpu usage as well. I used a 1080p youtube video but mpv reported libva and vdpau errors, but you don’t have any error. Have you installed anything more than these libraries?

The decoding is done without any loss but output has some (136 for you) so the copy is not very good. This is something reported in archlinux-wiki, and software decoding remains better but is good to see hardware support is getting better.

JFL · 23 March 2021 13:10

If I use mpv --hwdec=auto-copy I have the same libva and vdpau errors. I use mpv --hwdec=v4l2m2m-copy for 720p/60 and mpv --hwdec=v4l2m2m for 1440p/30. The dropped frames usually get worse it you move the mouse. This is more obvious if you stream video on Firefox and move the mouse, immediately you will notice frame drops if Panfrost is enabled.

Hopefully, Spikerguy is successful in getting ffmpeg-m2m pkg to work.

dante6913 · 24 March 2021 12:18

Hi @spikerguy where can I get your ffmpeg-m2m pkg?
If I install it will it work with kodi?

spikerguy · 24 March 2021 12:23

Here
I have not uploaded it to repo as I couldn’t really find if it was working or not.

No Kodi that I have been maintaining is using kodi-ffmpeg version from their branch first if I could get ffmpeg-m2m to actually show me that it is hw acc then I can look into the kodi side atleast.

dante6913 · 24 March 2021 12:26

Ok @spikerguy thanks I’m going to try it

spikerguy · 24 March 2021 12:27

I have the pkg at home, Let me see if I can get it for you now.

dante6913 · 24 March 2021 12:31

ok thank you

spikerguy · 24 March 2021 12:37

No luck with my home VPN connection. Wil share in the evening once home.

dante6913 · 25 March 2021 14:46

Hi @spikerguy did you managed to upload the package?

spikerguy · 25 March 2021 17:29

Thanks for the reminder.
ffmpeg-m2m-24.3

Try and let me know.

spikerguy · 26 March 2021 14:35

Getting some decent results on Panfrost using mesa-git

Can see the improvement in panfrost

0n0w1c · 26 March 2021 14:46

Wow, that is close to 3x the performance that I get on my RPi4.

dante6913 · 26 March 2021 19:37

No luck installing it
[pedro@sala ~]$
não foi possível cumprir as dependências:

incapaz de satisfazer a dependência ‘libx264.so=160-64’ requerida por ffmpeg-m2m
incapaz de satisfazer a dependência ‘libx265.so=192-64’ requerida por ffmpeg-m2m

dependencies error

spikerguy · 26 March 2021 20:02

Which branch are you on?