Hello,
I'm trying to encode a 4K video with ffmpeg. The QSV encoder will not
initialize.
I've tried searching online, but all I can find is that my syntax might
be incorrect. I have tried to read the ffmpeg wiki, but it doesn't
explain what to use nor how to use it. The provided examples in the wiki
fail with the exact same errors as below.
Any ideas?
Thanks!
% ffprobe tmp.mp4
<snip reason=Duplicate version info.">
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'tmp.mp4':
Metadata:
major_brand : isom
minor_version : 512
compatible_brands: isomiso2avc1mp41
encoder : Lavf62.3.100
Duration: 00:03:15.79, start: 0.000000, bitrate: 36078 kb/s
Stream #0:0[0x1](eng): Video: h264 (High) (avc1 / 0x31637661),
yuvj420p(pc, bt709, progressive), 3840x2160, 35970 kb/s, 30 fps, 30 tbr,
90k tbn (default) Metadata: handler_name : VideoHandle
vendor_id : [0][0][0][0]
Side data:
displaymatrix: rotation of -180.00 degrees
% ffmpeg -init_hw_device qsv=hw -filter_hw_device hw -i tmp.mp4 -c:v
vp9_qsv -b:v 2M -preset veryslow vp9_qsv.webm ffmpeg version 8.0 Copyright (c)
2000-2025 the FFmpeg developers
built with gcc 12 (Debian 12.2.0-14+deb12u1)
configuration: --prefix=/usr/local --enable-gpl --enable-version3
--enable-nonfree --enable-gray --enable-doc --enable-alsa --enable-chromaprint
--enable-frei0r --enable-gmp --enable-ladspa --enable-lcms2 --enable-libaom
--enable-libaribb24 --enable-libass --enable-libbluray --enable-libbs2b
--enable-libcaca --enable-libcdio --enable-libcodec2 --enable-libdav1d
--enable-libdavs2 --enable-libdvdnav --enable-libdvdread --enable-libflite
--enable-libfontconfig --enable-libfreetype --enable-libharfbuzz
--enable-libglslang --enable-libgme --enable-libgsm --enable-libilbc
--enable-libjack --enable-libjxl --enable-libkvazaar --enable-libmodplug
--enable-libmp3lame --enable-liboapv --enable-libopencore-amrnb
--enable-libopencore-amrwb --enable-libopenh264 --enable-libopenjpeg
--enable-libopenmpt --enable-libopus --enable-libqrencode --enable-librabbitmq
--enable-librav1e --enable-librist --enable-librsvg --enable-librubberband
--enable-librtmp --enable-libshine --enable-libsnappy --enable-
libsoxr --enable-libspeex --enable-libsrt --enable-libssh --enable-libsvtav1
--enable-libtesseract --enable-libtheora --enable-libtwolame --enable-libuavs3d
--enable-libv4l2 --enable-libvidstab --enable-libvo-amrwbenc --enable-libvorbis
--enable-libvpx --enable-libvvenc --enable-libwebp --enable-libx264
--enable-libx265 --enable-libxeve --enable-libxevd --enable-libxavs
--enable-libxavs2 --enable-libxvid --enable-libxml2 --enable-libzimg
--enable-libzmq --enable-libzvbi --enable-lv2 --enable-lzma --enable-libmysofa
--enable-openal --enable-opencl --enable-opengl --enable-openssl
--enable-pocketsphinx --enable-sndio --enable-sdl2 --enable-vapoursynth
--enable-libvpl --enable-v4l2-m2m --disable-stripping --cpu=native
--target-os=linux --enable-shared
libavutil 60. 8.100 / 60. 8.100
libavcodec 62. 11.100 / 62. 11.100
libavformat 62. 3.100 / 62. 3.100
libavdevice 62. 1.100 / 62. 1.100
libavfilter 11. 4.100 / 11. 4.100
libswscale 9. 1.100 / 9. 1.100
libswresample 6. 1.100 / 6. 1.100
[QSV @ 0x55c48ea44440] No supported child device type is enabled
Device creation failed: -38.
Failed to set value 'qsv=hw' for option 'init_hw_device': Function not
implemented
Error parsing global options: Function not implemented
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