MEncoder

„MEncoder is a free command line video decoding, encoding and filtering tool released under the GNU General Public License. It is a close sibling to MPlayer and can convert all the formats that MPlayer understands into a variety of compressed and uncompressed formats using different codecs.“

MEncoder. (2008, February 23). In Wikipedia, The Free Encyclopedia. Retrieved 18:57, April 5, 2008, from
http://en.wikipedia.org/w/index.php?title=MEncoder&oldid=193447614


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Saturday, April 12, 2008

[MEncoder-users] concatenating two movies

After succeeding in making a movie from jpeg files with:
mencoder "mf://*.jpg" -mf type=jpg:w=640:h=480:fps=0.5 -ofps 30 -ovc
lavc -lavcopts vcodec=mjpeg -o still00001.avi
I am now trying to concatenate this movie with another one taken (as a
movie) with my camera: 00263.avi
Here is the command line:
mencoder still00001.avi 00263.avi -ovc copy -oac copy -o output.avi
Here is the output:
MEncoder 1.0rc2-4.1.2 (C) 2000-2007 MPlayer Team
CPU: Intel(R) Pentium(R) 4 CPU 3.00GHz (Family: 15, Model: 3, Stepping: 4)
CPUflags: Type: 15 MMX: 1 MMX2: 1 3DNow: 0 3DNow2: 0 SSE: 1 SSE2: 1
Compiled with runtime CPU detection.
success: format: 0 data: 0x0 - 0x1da9a
AVI file format detected.
[aviheader] Video stream found, -vid 0
AVI: No audio stream found -> no sound.
VIDEO: [MJPG] 640x480 24bpp 30.000 fps 112.1 kbps (13.7 kbyte/s)
[V] filefmt:3 fourcc:0x47504A4D size:640x480 fps:30.00 ftime:=0.0333
videocodec: framecopy (640x480 24bpp fourcc=47504a4d)
Writing header...
ODML: Aspect information not (yet?) available or unspecified, not
writing vprp header.
Writing header...
ODML: Aspect information not (yet?) available or unspecified, not
writing vprp header.
success: format: 0 data: 0x0 - 0x8eb4d82 0min 0mb A-V:0.000 [112:0]
AVI file format detected.
[aviheader] Video stream found, -vid 0
[aviheader] Audio stream found, -aid 1
VIDEO: [MJPG] 640x480 24bpp 30.000 fps 9477.2 kbps (1156.9 kbyte/s)
[V] filefmt:3 fourcc:0x47504A4D size:640x480 fps:30.00 ftime:=0.0333
videocodec: framecopy (640x480 24bpp fourcc=47504a4d)
videocodec: framecopy (640x480 24bpp fourcc=47504a4d)

All video files must have identical fps, resolution, and codec for -ovc copy.

Exiting...

The only difference I can see is 112.1 kbps (13.7 kbyte/s) for the
animated pictures and 9477.2 kbps (1156.9 kbyte/s) for the movie.
Would that be the resolution? I wouldn't think so. What am I missing?
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