Need a method for creating AVI headers, both arbitrarily and when the file is reconstructed/written. Ideally, one could create a new AVI index; specify only a couple of attributes like width, height, and codec; and the rest would be determined when the file is rebuilt for writing.

There's basically no error handling anywhere.

The AVI index should parse and hold values for AVI and stream headers, then be able to reconstruct those header chunks.

Hi, it seems there is some preparation for mpeg4 support but no code yet, is that right? Or maybe I misunderstood something?

Recombining AVI streams shouldn't depend on the order from an original file. I don't know exactly how this is done by a regular AVI library, but it should be possible to use frame/bit rates to at least make an educated guess.