Do VCD Filesizes ever change??? HELP!

[Andy682]

Ok, I'm talking about making a vcd file smaller, using the same original avi file. It's my understanding that I lower the audio bitrate, lower the video bitrate, and the over all filesize of the output file will be smaller (with understood lower quality) However, that doesn't work for me!

I'm using TMPGenc, and have also tried PWI, and no matter what bitrate I select, I get the same file size! (I'm converting full movies) I have converted from Divx, and from DVD, always get teh same file size. I know it's lowering the bitrate, as the quality is taking a drastic hit. I have even set the video bitrate down to like 150, quality looked horrible! same file size!!
I'm using WinXP, if that might have anything to do with it.

Any help is greatly appreciated!

[Corkey]

Hi,

Could it be that when you created your DiVx AVI that you used an ultra-high compression and now TMPeg cannot improve on it - only code it to MPEG?

Just a thought - I seem to get 1Mb per minute of MPEG1, whatever I do.

[Andy682]

Someone else asked me the same thing - they figured that the divx was already so highly compressed, that it wasn't affecting file size to lower bitrates. However, I have also tried this with DV video, and DVD rips (before ever being converted to divx). It simply doesn't make sense to me. Can anyone confirm my thinking about the bitrates? That lowering the video/audio bitrate will in fact typically lower the filesize of the outcome video?
Thanks