I am using the mci commands to play an audio stream from a video and i was wondering if anyone knew how to take 2 audio sources (ex. an avi stream and a .wav file) and merge them into one audio stream.

An .avi stream is something immensely more complex than a simple wave sound stream - it is a complicated format that involves encoded audio and video streams utilizing several complex compression and decimation algorithms. There is no simple 1-on-1 way to mix these two.

For n unencoded audio (wav) streams, it's fairly simple, though:

Beware, though if you're using 16-bit stream data, and more than 1 stream that you want to mix, output->data must bew at least 32-bit or you'll end up with an overflow!

If this is too complicated or unclear, I'll explain further - just let me know. Unless, of course, I misunderstood your question...

edit: forgot something...

[edited by - crispy on April 9, 2003 7:19:12 PM]