Ik heb nog even het eerste commando geprobeerd met een film:
gijs@gijs-8:~/Films$ mencoder -ovc copy -oac copy -forceidx 59cabda100d5187f.avi -o werkend_59cabda100d5187f.avi
MEncoder 2:1.0~rc2-0ubuntu17+medibuntu1 (C) 2000-2007 MPlayer Team
CPU: Intel(R) Core(TM)2 Duo CPU E4500 @ 2.20GHz (Family: 6, Model: 15, Stepping: 13)
CPUflags: Type: 6 MMX: 1 MMX2: 1 3DNow: 0 3DNow2: 0 SSE: 1 SSE2: 1
Compiled with runtime CPU detection.
success: format: 0 data: 0x0 - 0x8a4ed48
AVI file format detected.
[aviheader] Video stream found, -vid 0
[aviheader] Audio stream found, -aid 1
AVI: Generated index table for 103808 chunks!
VIDEO: [XVID] 720x540 12bpp 25.000 fps 582.2 kbps (71.1 kbyte/s)
[V] filefmt:3 fourcc:0x44495658 size:720x540 fps:25.00 ftime:=0.0400
videocodec: framecopy (720x540 12bpp fourcc=44495658)
audiocodec: framecopy (format=55 chans=2 rate=48000 bits=0 B/s=18761 sample-0)
Writing header...
ODML: Aspect information not (yet?) available or unspecified, not writing vprp header.
Setting audio delay to 0.048s.
Writing header...
ODML: Aspect information not (yet?) available or unspecified, not writing vprp header.
Setting audio delay to 0.048s.
Writing index...22f (100%) 3264.45fps Trem: 0min 136mb A-V:0.039 [582:150]
Writing header...
ODML: Aspect information not (yet?) available or unspecified, not writing vprp header.
Setting audio delay to 0.048s.
Video stream: 582.169 kbit/s (72771 B/s) size: 113295840 bytes 1556.880 secs 38922 frames
Audio stream: 150.087 kbit/s (18760 B/s) size: 29215680 bytes 1557.264 secs
gijs@gijs-8:~/Films$
Het werkt wel, maar waarom jij een foutmelding krijgt?