Input #0, avi, from 'goodaudio.avi':
  Metadata:
    encoder         : VirtualDubMod 1.5.10.1 (build 2366/release)
  Duration: 01:24:12.41, start: 0.000000, bitrate: 1162 kb/s
    Stream #0:0: Video: mpeg4 (Simple Profile) (XVID / 0x44495658), yuv420p, 592
x320 [SAR 1:1 DAR 37:20], 1021 kb/s, 25 fps, 25 tbr, 25 tbn, 25 tbc
    Stream #0:1: Audio: mp3 (U[0][0][0] / 0x0055), 48000 Hz, stereo, s16p, 127 k
b/s
Input #1, matroska,webm, from 'goodvideo.mkv':
  Metadata:
    encoder         : libebml v1.3.0 + libmatroska v1.4.0
    creation_time   : 2013-03-12T03:27:55.000000Z
  Duration: 01:27:50.35, start: 0.000000, bitrate: 2333 kb/s
    Stream #1:0: Video: h264 (High), yuv420p(progressive), 1816x1080 [SAR 1:1 DA
R 227:135], 23.98 fps, 23.98 tbr, 1k tbn, 47.95 tbc (default)
    Stream #1:1: Audio: mp3, 48000 Hz, stereo, s16p, 320 kb/s (default)
[Parsed_atrim_0 @ 000000fe1af04c80] Media type mismatch between the 'Parsed_atri
m_0' filter output pad 0 (audio) and the 'Parsed_fps_1' filter input pad 0 (vide
o)
[AVFilterGraph @ 000000fe1aaf04c0] Cannot create the link atrim:0 -> fps:0
Error initializing complex filters.
Invalid argument