I am wondering if the reason I don't get surround sound on my AAC audio MP4 files is my AVR and not HTPC. I have a Gigabyte Z68 board in the HTPC that connects via HDMI to my Pioneer VSX-1121k AVR. I have Shark007 set to use ffdshow for the majority of my audio codecs (TrueHD, DTS-HD, AC3, AAC).
When I play a bluray rip with DTS-HD audio, my AVR shows 5.1 speakers and "DTS-HD Master", ffdshow output shows "HDMI bitstream" (picture 1
When I play a dvd rip with AC3 audio, my AVR shows 5.1 speakers and "DDIGITAL", ffdshow shows "S/PDIF" (picture 2
When I play a converted mp4 file with AAC audio, my AVR stays in 2 speakers, "PCM" does light up, but still displays "STEREO", ffdshow shows "PCM" (picture 3
So could my issue be that my AVR is not accepting the PCM output from the HTPC via HDMI? I have the AVR set to "Stream Direct". I've cycled through all of the Surround Sound settings on it (ALC, Auto Surround, Standard Surround, Enhanced Surround, Dolby Pro Logic II) with the same result in each one. Again, it recognizes PCM (the display says "PCM" at the top, but I am still only getting stereo eventhough ffdshow is saying it is sending 5.1 over the PCM. Hmm......