[MPlayer-users] ffmpeg mpeg1 encoding test

[Fabio Papa]

Hi all,
could someone with encoding experience try a little experiment, just to make 
sure I'm not the only one with this problem?
Try compressing any video you wish to mpeg1video using lavc, whatever 
parameters you think is necessary, to an avi file using mencoder.
It should play correctly and should output something like:

VIDEO:  [mpg1]  480x576  24bpp  25.000 fps  779.5 kbps (95.2 kbyte/s)
VIDEO:  MPEG1  480x576  (aspect 1)  25.000 fps  779.5 kbps (97.4 kbyte/s)

Then try to extract the video stream using ffmpeg, since it's the only way (at 
least that I know of):

ffmpeg -i avifile -vcodec copy -f rawvideo mpgfile

then play that file. What I see is this:

MPEG-ES file format detected.
VIDEO:  MPEG1  480x576  (aspect 1)  25.000 fps    0.0 kbps ( 0.0 kbyte/s)

Obviously something is very wrong here. This behaviour has started since after 
0.4.7 ffmpeg got out. Needless to say I cannot use those videos in any DVD 
author app. It seems to me like mpeg1video is relying on the avi container 
for the kbps/sec value, and doesn't have one of its own.
Can somebody throw some light in this?
Thanks!

-- 
Fabio Papa
Engineering division
Machining Centers Manufacturing S.p.A.
viale F. e G. Celaschi 19 - Vigolzone (PC) Italy