Codec Guide

I have no idea what else to try. I have SPDIF out, I have k-lite codec pack full installed. When installing, in the settings I have 5.1 set. I have tried playing in MPC, WMP, and VLC. No luck with any of them. When I open the file properties in MPC, it says 6ch audio so I know it is not stereo audio in the file.

I have audio output simultaneously to my 2 computer speakers as well as spdif out to my receiver where I have a 5.1 setup. When I go into control panel and click on properties of the spdif connection, then click on test DTS or Dolby Digital, my receiver automatically switches to full surround sound during the test because it recognizes the signal, however when I play the "6ch audio" movies, it goes back to stereo on the receiver and says PCM.

I have tried different spdif settings in the ac3filter however the audio then is just loud choppy fuzz. In VLC I have clicked on Audio>Audio Device and switched the setting from stereo to 5.1 with no change on the receiver.

My files are in the .mkv package. MPC properties read "Audio: Dolby AC3 48000Hz 6ch [Audio]"

What am I missing in the settings or anything else? Any help is so much appreciated! This is killing me.

try "Mixer" filter in ffdshow and set manual to 5.1 sound in "custrom matrix"

you probably have the same option in MPC, try it, if you dont have ffdshow instaled



Regards
Virtual_ManPL

I got it working finally by uninstalling all my codecs and players, and then installing the spdifer software from the maker of AC3Filter. I set the settings how I wanted and that was all it took. With the klite codec pack I must have had so many codecs filtering the audio and cancelling each other out. I know have the Combined Community Codec pack installed and it doesn't interfere with the audio. I deliberately avoided ffdshow audio and seems to working great for both Dolby Digital and DTS.

I must have had so many codecs filtering the audio and cancelling each other out

That is an incorrect conclusion. Only a single audio decoder is used at a time.

If SPDIFer works for you, then so should AC3Filter. They are based on the same code.

From my understanding, that is incorrect. Using the program GraphEdit, it showed the audio from my files being filtered into AC3Filter and out to FFdshow Audio and then out to spdif. According to the author of the AC3Filter, it is possible for "another filter to take SPDIF output of AC3Filter and decode it," which is exactly what was happening. Uninstalling FFdshow and the others is what solved my problem.

That should only happen if you also have enabled AC3/DTS/LPCM/Uncompressed in ffdshow. Maybe during your testing? Disabling those formats in the ffdshow audio options will solve the problem of two audio filters in the graph.