Now, for part two, in MPC-HC, go to Options, External Filters, select Add Filter, choose ffdshow Audio Decoder, then select Prefer. While you're here, might as well check AC3 and DTS under Pass-through as ffdshow will be used over MPC-HC's internal AC3/DTS decoder. Next, under Output on the left side, check AC3 (S/PDIF encode mode) and Encode only 5.1 channel streams (leave it at 640kbps). This forces any potential 7.1 channel audio to be downmixed to 5.1 (for the next step). Then, on the left side, select and check Mixer then change the output speaker configuration to '3/0/2 - 5 channel' and select LFE. This ensures that the WMAudio Decoder DMO (the audio decoder for WMA, which is what I presume will be used) can connect to ffdshow. In ffdshow's audio configuration under the Codecs panel, change Uncompressed to all supported (down the bottom). Once that's done, there are only a small nubmer of changes you need to make. If you're using 64-bit MPC-HC, get the 64-bit version of ffdshow.
AC3 FILTER OR FFDSHOW INSTALL
Assuming you're using the 32-bit MPC-HC, download the 32-bit version of ffdshow ( is a good site for the latest builds) and install it as usual.
AC3 FILTER OR FFDSHOW SOFTWARE
Thanks again for all the help - I think this is one battle that I might just give up on.įor this you'd need an additional piece of software such as ffdshow. That way, when the TV is being used by someone else, I can still use the computer on my monitor/speakers. I have a unique set up in that I have my computer hooked up to a monitor/speakers in my office, and then use my DVI port 2 out to my TV, and my SPDIF out to my reciever. So I know it can take them, and i know my computer can output them.but only in when I click the "test" button. Whats odd, in my control panel>sound>manage audio devices, when I test "DTS" and "Dolby Digital", they both work perfect and I can clearly see my receiver decoding as DTS or Dolby Digital (with no sound problems). If i set my speakers to default, then it sounds fine but only plays back PCM. The closest I can get is setting my SPDIF out to my "default" audio device, and then certain movies will play in DTS (or dolby digital), but the sound is JACKED UP (lots of clicking/etc). I tried installing both AC3Filter and the Vista 64 codec pack and follow some tips posted here, but no luck. Well, I'm starting to think maybe this is a problem with my configuration (Vista 64bit & sound blaster).