The VideoLAN Forums

Something occurred to me, so I went to my ffdshow audio decoder config, and set it to use libavcodec to decode Cook audio. That didn't help though, and I'm not sure if it even should have.

Another interesting thing, I just renamed the RMVB file to MKV, and it played fine.

I am seeing the same error. In my case I am attempting to play an MKV file containing a RV40 realvideo stream and a cook audio stream. It's basically an RMVB file where I extracted the streams and repackaged as an MKV. VLC played it fine when it was in the RMVB container, and it plays the separate v...