[Libav-user] How to encode with h264_amf correctly?

[vouk at mailbox.org]

> Carl Eugen Hoyos <ceffmpeg at gmail.com> hat am 21. Mai 2019 um 20:43 geschrieben:
> Am Di., 21. Mai 2019 um 10:53 Uhr schrieb <vouk at mailbox.org>:
> > I was testing encoding with AMF recently and I check
> > if the encoder is actually available to the user first:
> Did you also test with the ffmpeg tool?
> This may help with debugging, Carl Eugen

Yes, I tested it with the ffmpeg.exe and it - partially - worked. At least the encoder could be initialized.

C:\TeamCity\buildAgent\work\ffmpeg_nightly_release\build\bin>ffmpeg.exe -i "z:\demo.mkv" -c:v h264_amf -an "c:\Users\Daniel\Desktop\test2.mp4"
ffmpeg version 4.1.git Copyright (c) 2000-2019 the FFmpeg developers
   built with Microsoft (R) C/C++-Optimierungscompiler Version 19.15.26732.1 für x64
   configuration: --toolchain=msvc --extra-cflags='-MD -I/c/TeamCity/buildAgent/work/ffmpeg_nightly_release/build/include' --extra-ldflags='-LIBPATH:/c/TeamCity/buildAgent/work/ffmpeg_nightly_release/build/lib' --prefix=/c/TeamCity/buildAgent/work/ffmpeg_nightly_release/build --pkg-config-flags=--static --disable-doc --disable-shared --enable-static --enable-runtime-cpudetect --disable-devices --disable-network --enable-w32threads --enable-gpl --enable-libmp3lame --enable-libzimg --enable-avisynth --enable-libx264 --enable-libx265 --enable-cuda --enable-cuvid --enable-d3d11va --enable-nvenc --enable-amf --enable-libfdk-aac --enable-libvpx --enable-libvorbis --enable-libopus
   libavutil         56. 28.100 / 56. 28.100
   libavcodec       58. 52.102 / 58. 52.102
   libavformat      58. 27.103 / 58. 27.103
   libavdevice      58.   7.100 / 58.   7.100
   libavfilter       7. 53.101 /   7. 53.101
   libswscale         5.   4.101 /   5.   4.101
   libswresample    3.   4.100 /   3.   4.100
   libpostproc      55.   4.100 / 55.   4.100
Input #0, matroska,webm, from 'z:\demo.mkv':
   Metadata:
      ENCODER             : Lavf58.5.100
   Duration: 00:00:01.57, start: 0.000000, bitrate: 2062 kb/s
      Stream #0:0: Video: h264 (High), yuv420p(tv, bt709, progressive), 2048x1152 [SAR 1:1 DAR 16:9], 1k fps, 60 tbr, 1k tbn, 120 tbc (default)
      Metadata:
         DURATION            : 00:00:01.567000000
      Stream #0:1: Audio: flac, 48000 Hz, stereo, s16 (default)
      Metadata:
         DURATION            : 00:00:01.536000000
Stream mapping:
   Stream #0:0 ->  #0:0 (h264 (native) ->  h264 (h264_amf))
Press [q] to stop, [?] for help
Output #0, mp4, to 'c:\Users\Daniel\Desktop\test2.mp4':
   Metadata:
      encoder             : Lavf58.27.103
      Stream #0:0: Video: h264 (h264_amf) (avc1 / 0x31637661), yuv420p, 2048x1152 [SAR 1:1 DAR 16:9], q=-1--1, 2000 kb/s, 60 fps, 15360 tbn, 60 tbc (default)
      Metadata:
         DURATION            : 00:00:01.567000000
         encoder             : Lavc58.52.102 h264_amf
[matroska,webm @ 00000220CAB4C600] Element at 0x62a53 ending at 0x62a6a exceeds containing master element ending at 0x62a47
frame=    95 fps= 62 q=-0.0 Lsize=       784kB time=00:00:01.56 bitrate=4096.8kbits/s speed=1.02x
video:782kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.151916%