[FFmpeg-user] AMD GPU + Vaapi encoding problem

[Colin Bitterfield]

I tried VAAPI with a RADEON 580 on Linux. It was intermittent at best.

I wound up using Vulkan with success.

This is the hwaccel command I was using for transcoding.

time ffmpeg -hide_banner -stats -hwaccel vulkan -init_hw_device vulkan:0 -threads 16 -i input.mp4 -vf scale=854:480 -c:v  libopenh264  -c:a copy -quality quality -b:v 2M -crf 23 -maxrate 2M -bufsize 6M -slice_mode dyn -max_nal_size 65535 -allow_skip_frames 1 output_gpu_3.mp4 -y

I started writing an article on RADEON based transcoding:
Here is a draft link. It is far from done. But I will finishing it this week
https://medium.com/@cbitterfield/radeon-gpu-transcoding-with-ubuntu-18-04-lts-2e5143d0d1cd
On Apr 8, 2020, 12:39 PM -0700, Tobias Kilb <tobiaskilb at gmail.com>, wrote:
> Uh, indeed. Good to know. I thought the development is going towards vaapi
> from amd/intel.
>
> Regards
> Tobias
>
> Ostap Batug <ostik0bleat at gmail.com> schrieb am Mi., 8. Apr. 2020, 21:25:
>
> > https://wiki.archlinux.org/index.php/Hardware_video_acceleration#ATI/AMD
> >
> > On Wed, 8 Apr 2020 at 22:17, Tobias Kilb <tobiaskilb at gmail.com> wrote:
> >
> > > Hi,
> > >
> > > AI am wondering why it shows vdpau because you have an amd graphics
> > > adapter.
> > >
> > > Regards
> > > Tobias
> > >
> > > Ostap Batug <ostik0bleat at gmail.com> schrieb am Mi., 8. Apr. 2020, 21:08:
> > >
> > > > Hello,
> > > > Yes this is the same machine
> > > > i havent figured out a command to run with -init_hw_device , but
> > > -hwaccels
> > > > reports:
> > > > Hardware acceleration methods:
> > > > vdpau
> > > > so seems that i don't have vaapi? although i am not certain, yes my gpu
> > > is
> > > > primarily supporting vdpau, but i have a sort of vaapi emulation with
> > > > vdpau, or something?
> > > > Regards,
> > > > Repu
> > > >
> > > > On Wed, 8 Apr 2020 at 21:03, Ted Park <kumowoon1025 at gmail.com> wrote:
> > > >
> > > > > Hello,
> > > > >
> > > > > > Okay, i've used latest static build from git of amd64 arch, it
> > can't
> > > > find
> > > > > > option -vaapi_device,
> > > > > > and this is the output (ran from the extracted archive path):
> > > > > > $ ./ffmpeg -vaapi_device /dev/dri/renderD128 -f x11grab -video_size
> > > > > > 1920x1080 -i :0 -vf 'format=nv12,hwupload' -c:v h264_vaapi -b:v 7M
> > > > > > -profile:v main -bf 0 output.mp4
> > > > > > ffmpeg version N-52056-ge5d25d1147-static
> > > > > https://johnvansickle.com/ffmpeg/
> > > > > > Copyright (c) 2000-2020 the FFmpeg developers
> > > > > > built with gcc 8 (Debian 8.3.0-6)
> > > > > > configuration: --enable-gpl --enable-version3 --enable-static
> > > > > > --disable-debug --disable-ffplay --disable-indev=sndio
> > > > > > --disable-outdev=sndio --cc=gcc --enable-fontconfig --enable-frei0r
> > > > > > --enable-gnutls --enable-gmp --enable-libgme --enable-gray
> > > > > --enable-libaom
> > > > > > --enable-libfribidi --enable-libass --enable-libvmaf
> > > > --enable-libfreetype
> > > > > > --enable-libmp3lame --enable-libopencore-amrnb
> > > > --enable-libopencore-amrwb
> > > > > > --enable-libopenjpeg --enable-librubberband --enable-libsoxr
> > > > > > --enable-libspeex --enable-libsrt --enable-libvorbis
> > --enable-libopus
> > > > > > --enable-libtheora --enable-libvidstab --enable-libvo-amrwbenc
> > > > > > --enable-libvpx --enable-libwebp --enable-libx264 --enable-libx265
> > > > > > --enable-libxml2 --enable-libdav1d --enable-libxvid
> > --enable-libzvbi
> > > > > > --enable-libzimg
> > > > > > libavutil 56. 42.101 / 56. 42.101
> > > > > > libavcodec 58. 76.100 / 58. 76.100
> > > > > > libavformat 58. 42.100 / 58. 42.100
> > > > > > libavdevice 58. 9.103 / 58. 9.103
> > > > > > libavfilter 7. 77.100 / 7. 77.100
> > > > > > libswscale 5. 6.101 / 5. 6.101
> > > > > > libswresample 3. 6.100 / 3. 6.100
> > > > > > libpostproc 55. 6.100 / 55. 6.100
> > > > > > Unrecognized option 'vaapi_device'.
> > > > > > Error splitting the argument list: Option not found
> > > > >
> > > > >
> > > > > The option might not be there any more, try using -init_hw_device
> > > > instead,
> > > > > and use -hwaccels to list additional hardware support?
> > > > > Also confirm this is the same machine (or at least with similar
> > > hardware)
> > > > > that ran the earlier command?
> > > > >
> > > > > Regards,
> > > > > Ted Park
> > > > >
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