WinTV-1800 no sound on clear QAM channels

[LouCypher]

GB-PVR 1.1.5
Windows XP x64 SP2
WinTV2000 Hybrid Full CD 4.0.25340

I've setup GB-PVR for the analog channels which receive audio fine. The HDTV channels on clear QAM have a great picture but I don't hear any audio. I can hear audio using WinTV but I hate the Hauppauge channel manager and I'm really liking GB-PVR so far.

For almost all of the clear QAM channels I have an option with or without AC3, I've tried both. I went through all three multiplexer options, and tried the other two audio decoders with no success.

Can anyone recommend the proper configuration for the WinTV-1800 to receive audio on clear QAM HDTV channels?

[sub]

Its probably because you dont have an AC3 capable decoder installed on your machine. From memory the one that comes with WinTV only works with WinTV (due to a special license key that the WinTV app has to feed to it).

I'd try installing AC3Filter.

[LouCypher]

I'd try installing AC3Filter.

That helps tremendously. I installed it and most of the channels I wasn't getting sound on now work as long as I choose the right one (some don't have audio on AC3).

There are maybe half a dozen channels now that still have no audio, and AC3 or not makes no difference. One in particular, TNT-HD, has a regular, #2, and AC3.

Is it possible the cable company doesn't encrypt the video but does encrypt the audio, or is there something else I should try for those channels?

I'm really happy with GB-PVR regardless because now I get ALL the channels that I receive in WinTV (with audio) and MORE (only some without audio).

[sub]

Maybe, I dont really know.