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➜  ffmpeg git:(master) ✗ ./ffplay -loglevel trace  av1_assert_fail.mp4
ffplay version N-95730-ga7245adee3e Copyright (c) 2003-2019 the FFmpeg developers
  built with gcc 9.2.0 (GCC)
  configuration: --prefix=/home/andriy/ffmpeg_build --pkg-config-flags=--static --extra-cflags=-I/home/andriy/ffmpeg_build/include --extra-ldflags=-L/home/andriy/ffmpeg_build/lib --extra-libs='-lpthread -lm -lgcov' --bindir=/home/andriy/bin --enable-gpl --enable-libass --enable-libfdk-aac --enable-libfreetype --enable-libmp3lame --enable-libopus --enable-libvorbis --enable-libvpx --enable-libx264 --enable-libx265 --enable-nonfree --assert-level=1 --enable-librav1e --enable-libdav1d --samples=fate-suite --disable-stripping --enable-debug=3 --disable-optimizations --enable-libfreetype --enable-libfontconfig --enable-libfribidi --enable-libzmq --enable-chromaprint
  libavutil      56. 35.101 / 56. 35.101
  libavcodec     58. 62.100 / 58. 62.100
  libavformat    58. 35.100 / 58. 35.100
  libavdevice    58.  9.100 / 58.  9.100
  libavfilter     7. 66.100 /  7. 66.100
  libswscale      5.  6.100 /  5.  6.100
  libswresample   3.  6.100 /  3.  6.100
  libpostproc    55.  6.100 / 55.  6.100
Initialized opengl renderer.
[NULL @ 0x7fac24000bc0] Opening 'av1_assert_fail.mp4' for reading
[file @ 0x7fac24001780] Setting default whitelist 'file,crypto'
Probing mov,mp4,m4a,3gp,3g2,mj2 score:100 size:1349q=    0B f=0/0   
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x7fac24000bc0] Format mov,mp4,m4a,3gp,3g2,mj2 probed with size=2048 and score=100
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x7fac24000bc0] type:'ftyp' parent:'root' sz: 28 8 1349
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x7fac24000bc0] ISO: File Type Major Brand: isom
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x7fac24000bc0] type:'free' parent:'root' sz: 8 36 1349
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x7fac24000bc0] type:'mdat' parent:'root' sz: 494 44 1349
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x7fac24000bc0] type:'moov' parent:'root' sz: 819 538 1349
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x7fac24000bc0] type:'mvhd' parent:'moov' sz: 108 8 811
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x7fac24000bc0] time scale = 1000
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x7fac24000bc0] type:'trak' parent:'moov' sz: 605 116 811
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x7fac24000bc0] type:'tkhd' parent:'trak' sz: 92 8 597
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x7fac24000bc0] type:'edts' parent:'trak' sz: 36 100 597
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x7fac24000bc0] type:'elst' parent:'edts' sz: 28 8 28
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x7fac24000bc0] track[0].edit_count = 1
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x7fac24000bc0] duration=417 time=0 rate=1.000000
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x7fac24000bc0] type:'mdia' parent:'trak' sz: 469 136 597
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x7fac24000bc0] type:'mdhd' parent:'mdia' sz: 32 8 461
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x7fac24000bc0] type:'hdlr' parent:'mdia' sz: 65 40 461
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x7fac24000bc0] ctype=[0][0][0][0]
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x7fac24000bc0] stype=vide
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x7fac24000bc0] type:'minf' parent:'mdia' sz: 364 105 461
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x7fac24000bc0] type:'vmhd' parent:'minf' sz: 20 8 356
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x7fac24000bc0] type:'dinf' parent:'minf' sz: 36 28 356
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x7fac24000bc0] type:'dref' parent:'dinf' sz: 28 8 28
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x7fac24000bc0] Unknown dref type 0x206c7275 size 12
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x7fac24000bc0] type:'stbl' parent:'minf' sz: 300 64 356
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x7fac24000bc0] type:'stsd' parent:'stbl' sz: 140 8 292
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x7fac24000bc0] size=124 4CC=av01 codec_type=0
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x7fac24000bc0] type:'av1C' parent:'stsd' sz: 28 8 38
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x7fac24000bc0] type:'fiel' parent:'stsd' sz: 10 36 38
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x7fac24000bc0] type:'stts' parent:'stbl' sz: 24 148 292
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x7fac24000bc0] track[0].stts.entries = 1
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x7fac24000bc0] sample_count=10, sample_duration=512
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x7fac24000bc0] type:'stss' parent:'stbl' sz: 20 172 292
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x7fac24000bc0] keyframe_count = 1
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x7fac24000bc0] type:'stsc' parent:'stbl' sz: 28 192 292
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x7fac24000bc0] track[0].stsc.entries = 1
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x7fac24000bc0] type:'stsz' parent:'stbl' sz: 60 220 292
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x7fac24000bc0] sample_size = 0 sample_count = 10
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x7fac24000bc0] type:'stco' parent:'stbl' sz: 20 280 292
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x7fac24000bc0] AVIndex stream 0, sample 0, offset 2c, dts 0, size 102, distance 0, keyframe 1
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x7fac24000bc0] AVIndex stream 0, sample 1, offset 92, dts 512, size 50, distance 1, keyframe 0
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x7fac24000bc0] AVIndex stream 0, sample 2, offset c4, dts 1024, size 42, distance 2, keyframe 0
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x7fac24000bc0] AVIndex stream 0, sample 3, offset ee, dts 1536, size 46, distance 3, keyframe 0
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x7fac24000bc0] AVIndex stream 0, sample 4, offset 11c, dts 2048, size 37, distance 4, keyframe 0
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x7fac24000bc0] AVIndex stream 0, sample 5, offset 141, dts 2560, size 35, distance 5, keyframe 0
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x7fac24000bc0] AVIndex stream 0, sample 6, offset 164, dts 3072, size 35, distance 6, keyframe 0
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x7fac24000bc0] AVIndex stream 0, sample 7, offset 187, dts 3584, size 45, distance 7, keyframe 0
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x7fac24000bc0] AVIndex stream 0, sample 8, offset 1b4, dts 4096, size 48, distance 8, keyframe 0
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x7fac24000bc0] AVIndex stream 0, sample 9, offset 1e4, dts 4608, size 46, distance 9, keyframe 0
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x7fac24000bc0] Processing st: 0, edit list 0 - media time: 0, duration: 5124
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x7fac24000bc0] type:'udta' parent:'moov' sz: 98 721 811
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x7fac24000bc0] type:'meta' parent:'udta' sz: 90 8 90
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x7fac24000bc0] type:'hdlr' parent:'meta' sz: 33 8 78
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x7fac24000bc0] ctype=[0][0][0][0]
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x7fac24000bc0] stype=mdir
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x7fac24000bc0] type:'ilst' parent:'meta' sz: 45 41 78
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x7fac24000bc0] type:'[169]too' parent:'ilst' sz: 37 8 37
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x7fac24000bc0] on_parse_exit_offset=1349
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x7fac24000bc0] Before avformat_find_stream_info() pos: 1349 bytes read:1349 seeks:0 nb_streams:1
[libdav1d @ 0x7fac24002a00] libdav1d 0.4.0
[libdav1d @ 0x7fac24002a00] Using 1 frame threads, 1 tile threads
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x7fac24000bc0] stream 0, sample 0, dts 0
Assertion p->data[0] && p->allocator_data failed at libavcodec/libdav1d.c:237
[1]    5737 abort (core dumped)  ./ffplay -loglevel trace av1_assert_fail.mp4