Okay, then how do I extract 7.1-channel PCM from an AVI?

[Asterra]

I found a handy guide on creating a 7.1-channel WAV here:

http://www.microsoft.com/windows/windowsmedia/howto/articles/creating71audio.aspx

MediaInfo confirms that there is an 8-channel PCM in the file. Unfortunately, the process contains the audio in an AVI. Also unfortunately, I don't know of any means by which I might successfully extract/convert the audio intact. VirtualDub complains about there being no video channel. That's reasonable.

I'm so close! Once I have the WAV, I should be able to use MultiAVCHD to create a 7.1-channel Bluray. (Once, that is, I have found a tutorial that actually explains how you author a disc with that thing.)

[johns0]

Asterra,please do not double post,one thread is enough,if you need to add more information do it in your original post,this thread is closed.