a mpeg muxed video that becomes mute

[hatall]

I've got some problems when muxing a mpeg-2 video and a mp2 sound with bbmpeg v1.24 b13. First, I muxed a 480x480 mpeg-2 with a 128k mp2 and everything was fine. Then, I muxed the same movie with a higher res./rate 720x480 with a 224k mp2 and a 192k mp2, also. Both cases, the movie plays 3-4 secs with sound and then becomes mute.
I encoded the mp2 audio with besweet from an ac3 extracted with dvd2avi.
Any idea what's going on ?
Thanxs in advance.

[hatall]

I think I posted it in the wrong forum as nobody has answered. I'm moving to the 'Newbies'.
Thank you.

PS. I tried to delete this thread but I couldn't:

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