I'd look closer at the way you're measuring the bitrates.

doeasier.org's free easy video splitter, like dvdvideosoft.com's free video dub, is a direct stream copy app; it doesn't recode, (thus no settings- it doesn't need 'em nor could it use 'em.) just recreates the headers on the split chunks to *match what it finds*, so if the original was variable bitrate, the closest bitrate in the chunk is what the headers show.

I use it all the time along with the companion joiner to clip out commercials from stuff I capture with my ADS DVD Xpress box from the DVR.

Are there any free Video splitter which will split a lossy video without changing the bit rate at all? It is an mpg video. I have used Easy splitter, but the bit rate of the original is 384 and the "split pieces are 160. I can't see any settings to change this.