converting from mpeg1 to divx

[mlkwestcoast]

hello, i have a question about video converting if somebody can help me:
i want to know how many bitrate should i put in video converting softwares when converting for example a mpeg1 file to divx to have that same video with the same original quality, to not have for example a unnecessary bigger divx file with the same quality. video converting softwares give us the ability to choose everything but i want to know if there is a relation like:
1 mpeg file (100kb/s) = x * 1 divx file (5O kb/s) the two having the same quality. with x a coefficient.
and thanks

[45tripp]

No,
compressibillity is dependent on source video characteristics.

What you want is constant quant encoding.

gl

[jagabo]

Forget bitrates and use constant quality encoding. Pick the quality you want and the encoder will use whatever bitrate is needed at each and every frame to achieve that quality.

In Divx this is called "1-pass quality based" encoding. Try setting the Target Quantizer to 3. A lower quantizer will give higher quaility but it will be a waste with a VCD source (you'll only be preserving the MPEG artifacts better). 4 will be lower quality and you'll start noticing some degredation.

[mlkwestcoast]

thanks guys and sorry for all this time i was sick i got an accident, now im ok.