Finding out the byte range for a part of a DivX..

[Chaos Mutant]

OK, I've got this problem. I DLed a DivX but the image was corrupt at a place and I think an audio part was corrupted as well. So I want to download those parts again (and for that I need the byte ranges).

I'd like to know where in the file the audio and video from, say, 10 minutes to 10 min 10 sec is stored. So how can I find out the byte ranges for those parts? Is it possible to add a feature like that in BSPlayer?
Thanks in advance,

Chaos Mutant

[Safai]

an easy way with vdub

cut the first part, note the file size
cut the second part, note the file size

now you have a range...