lead: unsupported format 0x1006

[ami_stuff]

./ffmpeg -i lead_0x1006.avi -y out.avi
ffmpeg version N-112728-g409b29d3f9 Copyright (c) 2000-2023 the FFmpeg developers
  built with gcc 11 (Ubuntu 11.4.0-1ubuntu1~22.04)
  configuration: 
  libavutil      58. 32.100 / 58. 32.100
  libavcodec     60. 33.100 / 60. 33.100
  libavformat    60. 17.100 / 60. 17.100
  libavdevice    60.  4.100 / 60.  4.100
  libavfilter     9. 13.100 /  9. 13.100
  libswscale      7.  6.100 /  7.  6.100
  libswresample   4. 13.100 /  4. 13.100
[lead @ 0x5588349358c0] unsupported format 0x1006 is not implemented. Update your FFmpeg version to the newest one from Git. If the problem still occurs, it means that your file has a feature which has not been implemented.
[lead @ 0x5588349358c0] If you want to help, upload a sample of this file to https://streams.videolan.org/upload/ and contact the ffmpeg-devel mailing list. (ffmpeg-devel@ffmpeg.org)
[lead @ 0x5588349358c0] unsupported format 0x1006 is not implemented. Update your FFmpeg version to the newest one from Git. If the problem still occurs, it means that your file has a feature which has not been implemented.
[lead @ 0x5588349358c0] If you want to help, upload a sample of this file to https://streams.videolan.org/upload/ and contact the ffmpeg-devel mailing list. (ffmpeg-devel@ffmpeg.org)
[lead @ 0x5588349358c0] unsupported format 0x1006 is not implemented. Update your FFmpeg version to the newest one from Git. If the problem still occurs, it means that your file has a feature which has not been implemented.
[lead @ 0x5588349358c0] If you want to help, upload a sample of this file to https://streams.videolan.org/upload/ and contact the ffmpeg-devel mailing list. (ffmpeg-devel@ffmpeg.org)
[avi @ 0x558834934600] Could not find codec parameters for stream 0 (Video: lead (LEAD / 0x4441454C), none, 524x524): unspecified pixel format
Consider increasing the value for the 'analyzeduration' (0) and 'probesize' (5000000) options
Input #0, avi, from 'lead_0x1006.avi':
  Duration: 00:00:00.12, start: 0.000000, bitrate: 9833 kb/s
  Stream #0:0: Video: lead (LEAD / 0x4441454C), none, 524x524, 25 fps, 25 tbr, 25 tbn
Stream mapping:
  Stream #0:0 -> #0:0 (lead (native) -> mpeg4 (native))
Press [q] to stop, [?] for help
[lead @ 0x55883493ba40] unsupported format 0x1006 is not implemented. Update your FFmpeg version to the newest one from Git. If the problem still occurs, it means that your file has a feature which has not been implemented.
[lead @ 0x55883493ba40] If you want to help, upload a sample of this file to https://streams.videolan.org/upload/ and contact the ffmpeg-devel mailing list. (ffmpeg-devel@ffmpeg.org)
[vist#0:0/lead @ 0x55883493b8c0] Error submitting packet to decoder: Not yet implemented in FFmpeg, patches welcome
[lead @ 0x55883493ba40] unsupported format 0x1006 is not implemented. Update your FFmpeg version to the newest one from Git. If the problem still occurs, it means that your file has a feature which has not been implemented.
[lead @ 0x55883493ba40] If you want to help, upload a sample of this file to https://streams.videolan.org/upload/ and contact the ffmpeg-devel mailing list. (ffmpeg-devel@ffmpeg.org)
[vist#0:0/lead @ 0x55883493b8c0] Error submitting packet to decoder: Not yet implemented in FFmpeg, patches welcome
[lead @ 0x55883493ba40] unsupported format 0x1006 is not implemented. Update your FFmpeg version to the newest one from Git. If the problem still occurs, it means that your file has a feature which has not been implemented.
[lead @ 0x55883493ba40] If you want to help, upload a sample of this file to https://streams.videolan.org/upload/ and contact the ffmpeg-devel mailing list. (ffmpeg-devel@ffmpeg.org)
[vist#0:0/lead @ 0x55883493b8c0] Error submitting packet to decoder: Not yet implemented in FFmpeg, patches welcome
Cannot determine format of input stream 0:0 after EOF
Error marking filters as finished
Error while filtering: Invalid data found when processing input
[vist#0:0/lead @ 0x55883493b8c0] Decode error rate 1 exceeds maximum 0.666667
[out#0/avi @ 0x55883493c700] Nothing was written into output file, because at least one of its streams received no packets.
frame=    0 fps=0.0 q=0.0 Lsize=       0kB time=N/A bitrate=N/A speed=N/A    
Conversion failed!

[pross]

This is a valid format code, but you appear to have tripped a bug in the original decoder: interlaced mode with an unaligned number of vertical pixels, causes the vertical pixels to wrap from bottom to top of screen.

I don't want to reproduce this bug in FFmpeg :(

[ami_stuff]

Attached file was encoded with a bit higher revision of the lead's encoder, no idea if this file is any better.

[pross]

The lead_1006_2.avi file works!

Could you kindly encode and upload a file using not 32px aligned vertical resolution (e.g. 640x464), and not 16px aligned vertical resoltion (e.g. 640x478)? Cheers

[ami_stuff]

Replying to pross:

The lead_1006_2.avi file works!

Great!

Could you kindly encode and upload a file using not 32px aligned vertical resolution (e.g. 640x464), and not 16px aligned vertical resoltion (e.g. 640x478)? Cheers

Attached, regards.