.trm to avi

[moosewrangler]

Summary of the bug: Audio codec not found for input stream
How to reproduce:

ffmpeg -i test.trm test2.avi

[avi @ 0000017b61f7bdc0] non-interleaved AVI
[wmv3 @ 0000017b61f8e000] Extra data: 16 bits left, value: 4014
[avi @ 0000017b61f7bdc0] Could not find codec parameters for stream 0 (Audio: none ([128][1][0][0] / 0x0180), 22050 Hz, 2 channels, 48 kb/s): unknown codec
Consider increasing the value for the 'analyzeduration' (0) and 'probesize' (5000000) options
Guessed Channel Layout for Input Stream #0.0 : stereo
Input #0, avi, from 'test.trm':
  Duration: 00:00:05.48, start: 0.000000, bitrate: 431 kb/s
  Stream #0:0: Audio: none ([128][1][0][0] / 0x0180), 22050 Hz, stereo, 48 kb/s
  Stream #0:1: Video: wmv3 (Main) (WMV3 / 0x33564D57), yuv420p, 352x240, 408 kb/s, 29.97 fps, 29.97 tbr, 29.97 tbn
Stream mapping:
  Stream #0:1 -> #0:0 (wmv3 (native) -> mpeg4 (native))
  Stream #0:0 -> #0:1 (? (?) -> mp3 (libmp3lame))
Decoder (codec none) not found for input stream #0:0

Trying to have the option to reformat these files without the need to manually convert every file with the proprietary software.

reference ticket ​https://trac.ffmpeg.org/ticket/7279