[MEncoder-users] Problem producing raw avi files

[jiho]

 > NB: I haven't seen this message posted to the list though it is in 
the archive. I re-send it just in case.

Hi list,

I used to find great support on the mplayer mailing list. I'm confident 
it will be the same here, so:

I am importing a video sequence from a digital camera (SONY handycam if 
that matters) into an AVI file. the file is encoded with some codec 
from the importing software (Cinepack codec by radius). I want to 
convert this file to raw AVI in order to open it as a sequence of 
images in ImageJ a great, free, java image processing software ( 
http://rsb.info.nih.gov/ij/ ). It uses a plugin named AVI reader which 
is described here: http://rsb.info.nih.gov/ij/plugins/avi-reader.html 
if by any chance someone knows this software.

Anyway, I am doing this:
$ mencoder ownfor.avi -ofps 2 -ss 10 -endpos 3 -ovc raw -ffourcc RAW
I added the -ffourcc option as
$ mencoder -ovc help
outputs:
[...]
    raw      - uncompressed video. Use fourcc option to set format 
explicitly.
[...]
The fourcc code was found on:
http://www.fourcc.org/index.php?http%3A//www.fourcc.org/intro.php

But trying to open the file in ImageJ answers "An error occured reading 
the file. AVI file must be uncompressed"

$ mplayer test. avi
nonetheless outputs:
[...]
Opening video decoder: [raw] RAW Uncompressed Video
VDec: vo config request - 720 x 480 (preferred csp: Planar YV12)
VDec: using Planar YV12 as output csp (no 0)
Movie-Aspect is undefined - no prescaling applied.
VO: [sdl] 720x480 => 720x480 Planar YV12
Selected video codec: [rawyv12] vfm:raw (RAW YV12)
[...]

I wonder if maybe there is some encoding left from the first time the 
file was encoded to AVI. does the raw codec uncompress everything?
it might also be possible that ImageJ's plugin is less performant in 
detecting the file type than mplayer and that my fourcc code is wrong. 
does someone knows what I should specify?
Is there a reason why it could be better if I download the video from 
the camera as an MPEG movie?
By any chance, has someone tried to use mencoder to produce some input 
for ImageJ?

thanks in advance.

I'm using mplayer/mencoder on an 1.0Ghz G4 iBook with Mac OS 10.3.8. It 
was compiled via fink:
MPlayer 1.0pre6-3.3 (C) 2000-2004 MPlayer Team
(I know it' not the latest CVS I haven't been able to compile it at the 
moment.)

JiHO
---
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a chaque nouvelle cuvee on sait que ce sera degueulasse,
     mais on en prend quand meme par masochisme.
---
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