trouble compressing MPEG into DivX

[flipdon]

I'm trying to compress an MPEG file using DivX 5.02 but im getting strange results. Everytime I encode in DivX, i get a file that's bigger than the original. I've tried so many different things: 2-pass at bitrates down to 100-200, quality based with quantizer of 30, 1 pass with bitrate of like 80-90, bumping up the max quantizer to 20.

Is there something special when going from MPEG to DivX that im missing here? I'm trying to help out a friend make some videos of a sketch comedy performance small enough to put on his site, but the my output avi's continuously come out ~100MB larger than the original MPEG.

If you need any more information about my procedure, tell me.

[manono]

Hi-

What's the resolution of the original .mpg file? If you're raising the resolution a lot when converting to DivX (not much point in that, I don't think), then that could help explain it.

[flipdon]

The MPEG is 352x240, but im not changing the resolution. Im running no filters on it at all. It seems strange to me that the filesize gets larger when i 'compress' it.

[yingx2]

Maybe you forgot to compress the audio part:cool:

[LeonMcNichol]

Yeah, it converts it from mp2 to wav in virtualdub. So the file will get larger.

[flipdon]

oh, i had no idea that was happening. even if 'direct stream copy' is chosen? well, i just tried encoding without audio and it finally compressed. thanks for your help everyone.