mscc: "Inflate error: -3"

[ami_stuff]

decodes correctly with the original codec

./ffmpeg -i mscc.avi out.avi
ffmpeg version N-109064-gc124981b79 Copyright (c) 2000-2022 the FFmpeg developers
  built with gcc 9 (Ubuntu 9.4.0-1ubuntu1~20.04.1)
  configuration: 
  libavutil      57. 42.100 / 57. 42.100
  libavcodec     59. 52.101 / 59. 52.101
  libavformat    59. 34.101 / 59. 34.101
  libavdevice    59.  8.101 / 59.  8.101
  libavfilter     8. 50.100 /  8. 50.100
  libswscale      6.  8.112 /  6.  8.112
  libswresample   4.  9.100 /  4.  9.100
Input #0, avi, from 'mscc.avi':
  Duration: 00:00:02.00, start: 0.000000, bitrate: 5384 kb/s
  Stream #0:0: Video: mscc (mscc / 0x6363736D), bgra, 320x240, 5300 kb/s, 15 fps, 15 tbr, 15 tbn
Stream mapping:
  Stream #0:0 -> #0:0 (mscc (native) -> mpeg4 (native))
Press [q] to stop, [?] for help
[mscc @ 0x55bafe6a7780] Inflate error: -3
Error while decoding stream #0:0: Unknown error occurred
[mscc @ 0x55bafe6a7780] Inflate error: -3
Error while decoding stream #0:0: Unknown error occurred
[mscc @ 0x55bafe6a7780] Inflate error: -3
Error while decoding stream #0:0: Unknown error occurred
[mscc @ 0x55bafe6a7780] Inflate error: -3
Error while decoding stream #0:0: Unknown error occurred
[mscc @ 0x55bafe6a7780] Inflate error: -3
Error while decoding stream #0:0: Unknown error occurred
[mscc @ 0x55bafe6a7780] Inflate error: -3
Error while decoding stream #0:0: Unknown error occurred
[mscc @ 0x55bafe6a7780] Inflate error: -3
Error while decoding stream #0:0: Unknown error occurred
[mscc @ 0x55bafe6a7780] Inflate error: -3
Error while decoding stream #0:0: Unknown error occurred
[mscc @ 0x55bafe6a7780] Inflate error: -3
Error while decoding stream #0:0: Unknown error occurred
[mscc @ 0x55bafe6a7780] Inflate error: -3
Error while decoding stream #0:0: Unknown error occurred
[mscc @ 0x55bafe6a7780] Inflate error: -3
Error while decoding stream #0:0: Unknown error occurred
[mscc @ 0x55bafe6a7780] Inflate error: -3
Error while decoding stream #0:0: Unknown error occurred
[mscc @ 0x55bafe6a7780] Inflate error: -3
Error while decoding stream #0:0: Unknown error occurred
[mscc @ 0x55bafe6a7780] Inflate error: -3
Error while decoding stream #0:0: Unknown error occurred
[mscc @ 0x55bafe6a7780] Inflate error: -3
Error while decoding stream #0:0: Unknown error occurred
[mscc @ 0x55bafe6a7780] Inflate error: -3
Error while decoding stream #0:0: Unknown error occurred
[mscc @ 0x55bafe6a7780] Inflate error: -3
Error while decoding stream #0:0: Unknown error occurred
[mscc @ 0x55bafe6a7780] Inflate error: -3
Error while decoding stream #0:0: Unknown error occurred
[mscc @ 0x55bafe6a7780] Inflate error: -3
Error while decoding stream #0:0: Unknown error occurred
[mscc @ 0x55bafe6a7780] Inflate error: -3
Error while decoding stream #0:0: Unknown error occurred
[mscc @ 0x55bafe6a7780] Inflate error: -3
Error while decoding stream #0:0: Unknown error occurred
[mscc @ 0x55bafe6a7780] Inflate error: -3
Error while decoding stream #0:0: Unknown error occurred
[mscc @ 0x55bafe6a7780] Inflate error: -3
Error while decoding stream #0:0: Unknown error occurred
[mscc @ 0x55bafe6a7780] Inflate error: -3
Error while decoding stream #0:0: Unknown error occurred
[mscc @ 0x55bafe6a7780] Inflate error: -3
Error while decoding stream #0:0: Unknown error occurred
[mscc @ 0x55bafe6a7780] Inflate error: -3
Error while decoding stream #0:0: Unknown error occurred
[mscc @ 0x55bafe6a7780] Inflate error: -3
Error while decoding stream #0:0: Unknown error occurred
[mscc @ 0x55bafe6a7780] Inflate error: -3
Error while decoding stream #0:0: Unknown error occurred
[mscc @ 0x55bafe6a7780] Inflate error: -3
Error while decoding stream #0:0: Unknown error occurred
[mscc @ 0x55bafe6a7780] Inflate error: -3
Error while decoding stream #0:0: Unknown error occurred
Output #0, avi, to 'out.avi':
  Metadata:
    ISFT            : Lavf59.34.101
  Stream #0:0: Video: mpeg4 (FMP4 / 0x34504D46), yuv420p, 320x240, q=2-31, 200 kb/s, 15 fps, 15 tbn
    Metadata:
      encoder         : Lavc59.52.101 mpeg4
    Side data:
      cpb: bitrate max/min/avg: 0/0/200000 buffer size: 0 vbv_delay: N/A
frame=    0 fps=0.0 q=0.0 size=       0kB time=-577014:32:22.77 bitrate=  -0.0kbframe=    0 fps=0.0 q=0.0 Lsize=       6kB time=-577014:32:22.77 bitrate=N/A speed=N/A    
video:0kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: unknown
Output file is empty, nothing was encoded (check -ss / -t / -frames parameters if used)
Conversion failed!

[Elon Musk]

Which original codec and how was encoded with what tool?

[ami_stuff]

Replying to Elon Musk:

Which original codec

MSCC Version 1.1

2011 Mandsoft

mscc.dll

and how was encoded with what tool?

just converted input file to mscc with:

Demoshop 3.0.0

2011 Mandsoft

[ami_stuff]

It looks like ffmpeg is able to decode files encoded with built-in codec into recording software "Mandsoft Screen Capture Codec Version 1.0" 2012, but not files encoded with "MSCC Version 1.1" 2011 vfw dll. Those two codecs seems not 100% compatible with each othere (most likely because of bugs introduced between codec versions).

Anyway "MSCC Version 1.1" dll which can correctly decode attached "mscc.avi" file (at least on 32-bit win) is in this package:

​https://web.archive.org/web/20111011035824/https://www.mandsoft.com/download/DemoshopSetup.exe