[ffmpeg/video] av1: Missing Sequence Header.

[z59]

Sample is from https://test-videos.co.uk/sintel/mp4-av1

$ mpv --hwdec=no https://test-videos.co.uk/vids/sintel/mp4/av1/720/Sintel_720_10s_30MB.mp4
 (+) Video --vid=1 (*) (av1 1280x545 30.000fps)
[ffmpeg/video] av1: Your platform doesn't support hardware accelerated AV1 decoding.
[ffmpeg/video] av1: Failed to get pixel format.
Error while decoding frame!
[ffmpeg/video] av1: Missing Sequence Header.
Error while decoding frame!
[ffmpeg/video] av1: Missing Sequence Header.
...

mpv-wayland with libavfilter7 from ffmpeg-4.4.2 is ok. Most likely a ffmpeg bug.

[Sameer Sharma (sameersharma2006)]

I too can reproduce this.

[Sameer Sharma (sameersharma2006)]

Hey there can you give me output of --> ffmpeg -i https://test-videos.co.uk/vids/sintel/mp4/av1/720/Sintel_720_10s_30MB.mp4 -f null -

Using the snaps internal ffmpeg i mean by entering the snaps environment ?

If this works fine than the issue is not with ffmpeg.

On mine its as follows:

```
ffmpeg version 6.0 Copyright (c) 2000-2023 the FFmpeg developers
  built with gcc 11 (Ubuntu 11.3.0-1ubuntu1~22.04.1)
  configuration: --prefix=/usr --libdir=/usr/lib/x86_64-linux-gnu --disable-debug --disable-doc --disable-static --enable-gpl --enable-shared --disable-ffplay --disable-devices --enable-gnutls --enable-libmp3lame --enable-libvorbis
  libavutil 58. 2.100 / 58. 2.100
  libavcodec 60. 3.100 / 60. 3.100
  libavformat 60. 3.100 / 60. 3.100
  libavdevice 60. 1.100 / 60. 1.100
  libavfilter 9. 3.100 / 9. 3.100
  libswscale 7. 1.100 / 7. 1.100
  libswresample 4. 10.100 / 4. 10.100
  libpostproc 57. 1.100 / 57. 1.100
[av1 @ 0x55a0d1615180] Your platform doesn't support hardware accelerated AV1 decoding.
[av1 @ 0x55a0d1615180] Failed to get pixel format.
[av1 @ 0x55a0d1615180] Missing Sequence Header.
    Last message repeated 49 times
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x55a0d1320980] decoding for stream 0 failed
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x55a0d1320980] Could not find codec parameters for stream 0 (Video: av1 (Main) (av01 / 0x31307661), none(pc, progressive), 1280x545 [SAR 1:1 DAR 256:109], 25199 kb/s): unspecified pixel format
Consider increasing the value for the 'analyzeduration' (0) and 'probesize' (5000000) options
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'https://test-videos.co.uk/vids/sintel/mp4/av1/720/Sintel_720_10s_30MB.mp4':
  Metadata:
    major_brand : isom
    minor_version : 512
    compatible_brands: isomav01iso2mp41
    encoder : Lavf58.64.100
  Duration: 00:00:10.00, start: 0.000000, bitrate: 25201 kb/s
  Chapters:
    Chapter #0:0: start 0.000000, end 10.000000
      Metadata:
        title : Chapter 01
  Stream #0:0[0x1](eng): Video: av1 (Main) (av01 / 0x31307661), none(pc, progressive), 1280x545 [SAR 1:1 DAR 256:109], 25199 kb/s, 30 fps, 30 tbr, 15360 tbn (default)
    Metadata:
      handler_name : VideoHandler
      vendor_id : [0][0][0][0]
  Stream #0:1[0x2](eng): Data: bin_data (text / 0x74786574), 0 kb/s
    Metadata:
      handler_name : SubtitleHandler
Stream mapping:
  Stream #0:0 -> #0:0 (av1 (native) -> wrapped_avframe (native))
Press [q] to stop, [?] for help
[av1 @ 0x55a0d16277c0] Your platform doesn't support hardware accelerated AV1 decoding.
[av1 @ 0x55a0d16277c0] Failed to get pixel format.
Error while decoding stream #0:0: Function not implemented ...

[Sameer Sharma (sameersharma2006)]

For newer releases i will be compiling ffmpeg with dav1d support which may also improve av1 performance.

[Sameer Sharma (sameersharma2006)]

This has been fixed after enabling dav1d support.

New output;

```
ffmpeg version 6.0 Copyright (c) 2000-2023 the FFmpeg developers
  built with gcc 11 (Ubuntu 11.3.0-1ubuntu1~22.04.1)
  configuration: --prefix=/usr --libdir=/usr/lib/x86_64-linux-gnu --disable-debug --disable-doc --disable-static --enable-gpl --enable-shared --disable-ffplay --disable-devices --enable-gnutls --enable-libmp3lame --enable-libvorbis --enable-libvpx --enable-libdav1d --enable-libopus --enable-libx264 --enable-libx265
  libavutil 58. 2.100 / 58. 2.100
  libavcodec 60. 3.100 / 60. 3.100
  libavformat 60. 3.100 / 60. 3.100
  libavdevice 60. 1.100 / 60. 1.100
  libavfilter 9. 3.100 / 9. 3.100
  libswscale 7. 1.100 / 7. 1.100
  libswresample 4. 10.100 / 4. 10.100
  libpostproc 57. 1.100 / 57. 1.100
[libdav1d @ 0x55a35818e340] libdav1d 1.2.1-0-g8a6f054
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'https://test-videos.co.uk/vids/sintel/mp4/av1/720/Sintel_720_10s_30MB.mp4':
  Metadata:
    major_brand : isom
    minor_version : 512
    compatible_brands: isomav01iso2mp41
    encoder : Lavf58.64.100
  Duration: 00:00:10.00, start: 0.000000, bitrate: 25201 kb/s
  Chapters:
    Chapter #0:0: start 0.000000, end 10.000000
      Metadata:
        title : Chapter 01
  Stream #0:0[0x1](eng): Video: av1 (Main) (av01 / 0x31307661), yuv420p(pc, progressive), 1280x545, 25199 kb/s, SAR 1:1 DAR 256:109, 30 fps, 30 tbr, 15360 tbn (default)
    Metadata:
      handler_name : VideoHandler
      vendor_id : [0][0][0][0]
  Stream #0:1[0x2](eng): Data: bin_data (text / 0x74786574), 0 kb/s
    Metadata:
      handler_name : SubtitleHandler
[libdav1d @ 0x55a358196c00] libdav1d 1.2.1-0-g8a6f054
Stream mapping:
  Stream #0:0 -> #0:0 (av1 (libdav1d) -> wrapped_avframe (native))
Press [q] to stop, [?] for help
Output #0, null, to 'pipe:':
  Metadata:
    major_brand : isom
    minor_version : 512
    compatible_brands: isomav01iso2mp41
    encoder : Lavf60.3.100
  Chapters:
    Chapter #0:0: start 0.000000, end 10.000000
      Metadata:
        title : Chapter 01
  Stream #0:0(eng): Video: wrapped_avframe, yuv420p(pc, progressive), 1280x545 [SAR 1:1 DAR 256:109], q=2-31, 200 kb/s, 30 fps, 30 tbn (default)
    Metadata:
      handler_name : VideoHandler
      vendor_id : [0][0][0][0]
      encoder : Lavc60.3.100 wrapped_avframe
Error while decoding stream #0:0: Invalid data found when processing inputkbits/s speed=0.0125x
Error while decoding stream #0:0: Invalid data found when processing input107x
Error while decoding stream #0:0: Invalid data found when processing input0707x
Error while decoding stream #0:0: Invalid data found when processing input0574x
Error while decoding stream #0:0: Invalid data found when processing input0494x
    Last message repeated 1 times ...