Hi all,
I want to use a RX570 for transcoding with ffmpeg. Have been looking into this
for some time now and testing around various things.
I use Ubuntu 18.04 and I have it running with VAAPI. But the performance is not
good imo. For a 1080p file I only get like 1.8x speed. I was expecting
something around 6x to 8x.
Is VAAPI the right way to go here? I see that AMF is not yet ready for linux
and VDPAU only support decoding, not encoding.
Following is the command:
ffmpeg -hwaccel vaapi -vaapi_device /dev/dri/card1 -hwaccel_output_format vaapi
-i fs_experiental_method.avi -y -c:v h264_vaapi -profile:v main output.avi
ffmpeg version n4.0.2
mesa 18
amdgpu-pro-18.20-606296
libva: VA-API version 1.1.0
And here below the non-debug output of the command, to show the formats.
I would appreciate any help on this.
Thanks!
Lukas
ffmpeg version n4.0.2-2 Copyright (c) 2000-2018 the FFmpeg developers
built with gcc 7 (Ubuntu 7.3.0-16ubuntu3)
configuration: --prefix=/usr --extra-version=2 --toolchain=hardened
--libdir=/usr/lib/x86_64-linux-gnu --incdir=/usr/include/x86_64-linux-gnu
--extra-cflags=-I/usr/local/include --extra-ldflags=-L/usr/local/lib
--enable-gpl --disable-stripping --enable-avresample --enable-avisynth
--enable-gnutls --enable-ladspa --enable-libass --enable-libbluray
--enable-libbs2b --enable-libcaca --enable-libcdio --enable-libflite
--enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-libgme
--enable-libgsm --enable-libmp3lame --enable-libmysofa --enable-libopenjpeg
--enable-libopenmpt --enable-libopus --enable-libpulse --enable-librubberband
--enable-librsvg --enable-libshine --enable-libsnappy --enable-libsoxr
--enable-libspeex --enable-libssh --enable-libtheora --enable-libtwolame
--enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp
--enable-libx265 --enable-libxml2 --enable-libxvid --enable-libzmq
--enable-libzvbi --enable-omx --enable-openal --enable-opengl --enable-sdl2
--enable-libdc1394 --enable-libdrm --enable-libiec61883 --enable-chromaprint
--enable-frei0r --enable-libx264 --enable-shared --enable-vaapi --enable-vdpau
libavutil 56. 14.100 / 56. 14.100
libavcodec 58. 18.100 / 58. 18.100
libavformat 58. 12.100 / 58. 12.100
libavdevice 58. 3.100 / 58. 3.100
libavfilter 7. 16.100 / 7. 16.100
libavresample 4. 0. 0 / 4. 0. 0
libswscale 5. 1.100 / 5. 1.100
libswresample 3. 1.100 / 3. 1.100
libpostproc 55. 1.100 / 55. 1.100
Input #0, avi, from 'fs_experiental_method.avi':
Metadata:
encoder : Lavf57.83.100
Duration: 00:33:38.10, start: 0.000000, bitrate: 8133 kb/s
Stream #0:0: Video: h264 (Constrained Baseline) (H264 / 0x34363248),
yuv420p(progressive), 1920x1080, 8057 kb/s, 30 fps, 30 tbr, 30 tbn, 60 tbc
Stream #0:1: Audio: mp3 (U[0][0][0] / 0x0055), 32000 Hz, mono, fltp, 64 kb/s
Stream mapping:
Stream #0:0 -> #0:0 (h264 (native) -> h264 (h264_vaapi))
Stream #0:1 -> #0:1 (mp3 (mp3float) -> mp3 (libmp3lame))
Press [q] to stop, [?] for help
[h264_vaapi @ 0x55fcc47055c0] B frames are not supported (0x1) by the
underlying driver.
[h264_vaapi @ 0x55fcc47055c0] Warning: some packed headers are not supported
(want 0xd, got 0).
Output #0, avi, to 'output.avi':
Metadata:
ISFT : Lavf58.12.100
Stream #0:0: Video: h264 (h264_vaapi) (Main) (H264 / 0x34363248),
vaapi_vld, 1920x1080, q=0-31, 30 fps, 30 tbn, 30 tbc
Metadata:
encoder : Lavc58.18.100 h264_vaapi
Stream #0:1: Audio: mp3 (libmp3lame) (U[0][0][0] / 0x0055), 32000 Hz, mono,
fltp
Metadata:
encoder : Lavc58.18.100 libmp3lame
frame= 202 fps= 52 q=-0.0 Lsize= 4309kB time=00:00:06.80
bitrate=5187.5kbits/s speed=1.74x
video:4249kB audio:40kB subtitle:0kB other streams:0kB global headers:0kB
muxing overhead: 0.444606%
_______________________________________________
ffmpeg-user mailing list
ffmpeg-user@ffmpeg.org
http://ffmpeg.org/mailman/listinfo/ffmpeg-user
To unsubscribe, visit link above, or email
ffmpeg-user-requ...@ffmpeg.org with subject "unsubscribe".
