TK-949 said:

Is it possible that, instead of encoding to ac3, the output would be 6 (or 7, or 8) mono wav files?

[EDIT]: Having tried a lot to get it right, I just end up with an ac3 file with FL, FR, LFE and three empty channels. Something doesn't work here. I'm using the latest version of ffdshow...

[EDIT 2]: I got it. ac3filter needed some tinkering first...

Honestly, I've been on the fence with this.

Doom9's original guide (which is sadly out of date) outputs to mono wav files and then lets you re-encode with your software of choice.

The advantage is you can then do DTS or more modern flavors of encoding. Also it wouldn't matter what version of ffdshow you are using.

Besides, I've got to assume that ffdshow's on the fly encoder can't be nearly as good quality as dedicated encoders.

I think I may write an appendix that explains that method.

Also, you shouldn't need ac3filter at all.