#8506: H.265 VA-API encoder changes video size on AMD cards ------------------------------------+---------------------------------- Reporter: tildearrow | Type: defect Status: new | Priority: normal Component: avcodec | Version: 4.2 Keywords: | Blocked By: Blocking: | Reproduced by developer: 0 Analyzed by developer: 0 | ------------------------------------+---------------------------------- Description: The H.265 VA-API encoder on an AMD card rounds the video size to a multiple of 16. As an example, a 1920x1080 video will be resized to 1920x1088. While the specs require the internal video size to be a multiple of 16, there is another "visible" video size which can be set arbitrarily (and hence allow for the 1920x1080 size). However, the AMD VA-API driver seems to be setting the "visible" size to the same value as the internal size. Therefore the size is wrong. Steps to Reproduce: 1. {{{ sudo env LIBVA_DRIVER_NAME=radeonsi ffmpeg -vaapi_device /dev/dri/card1 -f lavfi -i color=color=black:size=1920x1080 -t 0.04 -vf 'format=nv12,hwupload' -c:v hevc_vaapi -qp 24 -y 1088.ts }}} This will generate a 1-frame video that apparently has a frame size of 1920x1080. 2. {{{ $ ffprobe -i 1088.ts }}} This will check that the video really has a frame size of 1920x1080. -Expected Result- {{{ ffprobe version n4.2.2 Copyright (c) 2007-2019 the FFmpeg developers built with gcc 9.2.0 (GCC) configuration: --prefix=/usr --disable-debug --disable-static --disable- stripping --enable-fontconfig --enable-gmp --enable-gnutls --enable-gpl --enable-ladspa --enable-libaom --enable-libass --enable-libbluray --enable-libdav1d --enable-libdrm --enable-libfreetype --enable-libfribidi --enable-libgsm --enable-libiec61883 --enable-libjack --enable-libmfx --enable-libmodplug --enable-libmp3lame --enable-libopencore_amrnb --enable-libopencore_amrwb --enable-libopenjpeg --enable-libopus --enable- libpulse --enable-libsoxr --enable-libspeex --enable-libssh --enable- libtheora --enable-libv4l2 --enable-libvidstab --enable-libvorbis --enable-libvpx --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxcb --enable-libxml2 --enable-libxvid --enable-nvdec --enable- nvenc --enable-omx --enable-shared --enable-version3 libavutil 56. 31.100 / 56. 31.100 libavcodec 58. 54.100 / 58. 54.100 libavformat 58. 29.100 / 58. 29.100 libavdevice 58. 8.100 / 58. 8.100 libavfilter 7. 57.100 / 7. 57.100 libswscale 5. 5.100 / 5. 5.100 libswresample 3. 5.100 / 3. 5.100 libpostproc 55. 5.100 / 55. 5.100 [mpegts @ 0x55aed1cd4c00] Format mpegts detected only with low score of 2, misdetection possible! Input #0, mpegts, from '1088.ts': Duration: 00:00:00.00, start: 1.400000, bitrate: 957090 kb/s Program 1 Metadata: service_name : Service01 service_provider: FFmpeg Stream #0:0[0x100]: Video: hevc (Main) (HEVC / 0x43564548), yuv420p(tv), 1920x1080, 90k tbr, 90k tbn, 90k tbc }}} (look at 1920x1080) -Actual (Defective) Result- {{{ ffprobe version n4.2.2 Copyright (c) 2007-2019 the FFmpeg developers built with gcc 9.2.0 (GCC) configuration: --prefix=/usr --disable-debug --disable-static --disable- stripping --enable-fontconfig --enable-gmp --enable-gnutls --enable-gpl --enable-ladspa --enable-libaom --enable-libass --enable-libbluray --enable-libdav1d --enable-libdrm --enable-libfreetype --enable-libfribidi --enable-libgsm --enable-libiec61883 --enable-libjack --enable-libmfx --enable-libmodplug --enable-libmp3lame --enable-libopencore_amrnb --enable-libopencore_amrwb --enable-libopenjpeg --enable-libopus --enable- libpulse --enable-libsoxr --enable-libspeex --enable-libssh --enable- libtheora --enable-libv4l2 --enable-libvidstab --enable-libvorbis --enable-libvpx --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxcb --enable-libxml2 --enable-libxvid --enable-nvdec --enable- nvenc --enable-omx --enable-shared --enable-version3 libavutil 56. 31.100 / 56. 31.100 libavcodec 58. 54.100 / 58. 54.100 libavformat 58. 29.100 / 58. 29.100 libavdevice 58. 8.100 / 58. 8.100 libavfilter 7. 57.100 / 7. 57.100 libswscale 5. 5.100 / 5. 5.100 libswresample 3. 5.100 / 3. 5.100 libpostproc 55. 5.100 / 55. 5.100 [mpegts @ 0x55aed1cd4c00] Format mpegts detected only with low score of 2, misdetection possible! Input #0, mpegts, from '1088.ts': Duration: 00:00:00.00, start: 1.400000, bitrate: 957090 kb/s Program 1 Metadata: service_name : Service01 service_provider: FFmpeg Stream #0:0[0x100]: Video: hevc (Main) (HEVC / 0x43564548), yuv420p(tv), 1920x1088, 90k tbr, 90k tbn, 90k tbc }}} As you can see, the video has been resize to 1920x1088. This should not happen. Additional information: FFmpeg 4.2.2. Arch Linux. Radeon Vega FE. Mesa 19.3.3. Linux linux 5.4.10-rt5-1-rt #1 SMP PREEMPT_RT @1578738969 x86_64 GNU/Linux. -- Ticket URL: <https://trac.ffmpeg.org/ticket/8506> FFmpeg <https://ffmpeg.org> FFmpeg issue tracker