Questions[av1](ubuntu)

I have read this and this but still I couldn't play av1 encoded videos truely. Audio streams play correctly but videos are not.

I have installed apt package manager vlc version vetinari 3.0.8 and it shows this error:

main decoder error: Codec `av01' (AOMedia's AV1 Video) is not supported.

After it i have remove apt's vlc and install snap vlc but when I play an av1 encoded video my system crahses and none of tty's doesn't work. I forced to reboot my system. How can I play av1 codecs with vlc or some other stuff?

Ubuntu 18.04.3 LTS

vlc vetinari 3.0.8

firefox 72.0.1

gpu driver radeon

mesa-va-drivers is installed.

Players can't play it, FFmpeg can't convert it

VLC:

Codec not supported:
VLC could not decode the format "av01" (AOMedia's AV1 Video)

Video:

video/x-gst-fourcc-av01 decoder is requiered to play the file, but not installed

FFmpeg:

admin@admin-ThinkPad-Twist:~$ ffmpeg -i "awo1DPQ_460svav1.mp4" -c:v rawvideo "awo1DPQ_460svav1-s.mp4"
ffmpeg version 3.4.6-0ubuntu0.18.04.1 Copyright (c) 2000-2019 the FFmpeg developers
  built with gcc 7 (Ubuntu 7.3.0-16ubuntu3)
  configuration: --prefix=/usr --extra-version=0ubuntu0.18.04.1 --toolchain=hardened --libdir=/usr/lib/x86_64-linux-gnu --incdir=/usr/include/x86_64-linux-gnu --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-libopencv --enable-libx264 --enable-shared
  WARNING: library configuration mismatch
  avcodec     configuration: --prefix=/usr --extra-version=0ubuntu0.18.04.1 --toolchain=hardened --libdir=/usr/lib/x86_64-linux-gnu --incdir=/usr/include/x86_64-linux-gnu --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-libopencv --enable-libx264 --enable-shared --enable-version3 --disable-doc --disable-programs --enable-libopencore_amrnb --enable-libopencore_amrwb --enable-libtesseract --enable-libvo_amrwbenc
  libavutil      55. 78.100 / 55. 78.100
  libavcodec     57.107.100 / 57.107.100
  libavformat    57. 83.100 / 57. 83.100
  libavdevice    57. 10.100 / 57. 10.100
  libavfilter     6.107.100 /  6.107.100
  libavresample   3.  7.  0 /  3.  7.  0
  libswscale      4.  8.100 /  4.  8.100
  libswresample   2.  9.100 /  2.  9.100
  libpostproc    54.  7.100 / 54.  7.100
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'awo1DPQ_460svav1.mp4':
  Metadata:
    major_brand     : isom
    minor_version   : 512
    compatible_brands: isomiso2mp41
    encoder         : Lavf58.35.101
  Duration: 00:00:31.50, start: 0.000000, bitrate: 88 kb/s
    Stream #0:0(und): Video: av1 (av01 / 0x31307661), none(progressive), 460x470, 88 kb/s, SAR 1:1 DAR 46:47, 10 fps, 10 tbr, 10240 tbn, 10240 tbc (default)
    Metadata:
      handler_name    : VideoHandler
File 'awo1DPQ_460svav1-s.mp4' already exists. Overwrite ? [y/N] y
Stream mapping:
  Stream #0:0 -> #0:0 (? (?) -> rawvideo (native))
Decoder (codec av1) not found for input stream #0:0

What do I do?

When I try playing an mkv file with vlc I get: Codec not supported: VLC could not decode the format "av01" (AOMedia's AV1 Video)

When I close the message the file actually plays only the sound track BUT NOT THE VIDEO.

How do I fix the problem. Thank you folks for anyone who can help me.

I am currently using Ubuntu Focal Fossa 20.04 LTS and I would like to create high quality AV1 files using FFmpeg and librav1e. I have been spurred along by the addition of rav1e support to FFmpeg as 'librav1e'.

The material that I am interested in working with is given here:

1. Sintel trailer video (720p uncompressed 1.7GB)
2. Sintel trailer audio (flac 5MB)

It is early days for rav1e support under FFmpeg with not a lot of documentation and published experimentation in place. It would be great to see it all working under an Ubuntu LTS release!

Apparently, Chrome 69 beta includes support for the Alliance for Open Media AV1 codec. The feature seems pointless without the ability to encode video with the new codec.

1. How can video be encoded with this new codec on Ubuntu 18.04?
2. What is the status of playback support in other media players, such as mpv?