avidemux and mplex and file splitting
 

Hello,
When trying to burn a svcd, I get an error: Drive does not accept any cue sheet variant - please report.

This is attributed to the overburn option in cdrdao, without it everything is fine. After doing some looking, it turns out my cd burner has some limitations and this is one of them.

So, since overburning is out I need smaller files to burn (svcd). So mplex has a switch -S xxx to set the size to split the file, and it will, but the problem is it also automatically splits it at a marker? put in the file by avidemux during the encoding. This is at like 800 something, the size that would fit on an svvcd with overburning.
Example: I have the two files, file.m1p with size 829m, and file.mp2 with size 91m. After mplex with no -S it makes 2 files, 1 is 839m, and the other is 95m. This is a pretty bad split, and since I cannot overburn anyway, I want to split it at say 600m. If I run mplex with -S 600, it will create a file of 600m, a file with 239m(839-600), and a file of 95m. How do I either a) make it not split at 839, or b) make avidemux place the marker earlier in the file?

thanks