confused with audio formats true hd etc

[froogle]

I've ripped the film 21 and it was too big to fit on a bd-r 25gb. From advice on here I've recoded the move down and then multiplexed the truehd sound track back on. It works great but the truehd sound track is playing as PCM on my surround sound amp. I have the onkyo 864 (I think that's the model number) which doesn't support truehd or dts-hd.

Anyway I put the original disk in to check what would happen and it seems the only english soundtrack (apart from descriptive) on the disk is truehd and from the original this plays in PCM too.

I was under the impression that hd audio formats downsampled to dd5.1 or dts?

Is this not the case or is it because I am playing it through my computer connected by coax?

If I was to use my ps3 and connect via hdmi will I get DD5.1 (as my amp doesn't support truehd)

The sound quality of PCM is crap. There is no sound from the rear speakers and it sounds like plain stereo sound. Not what I want to listed from HD

cheers

[KiddColt]

Hello,

I've encountered the same problem of the main movie with one audio track being too big to fit onto a BD-R.
The problem is the Dolby TrueHD. I looked it up on Wikipedia and found (after doing some math) that a 2 hour TrueHD soundtrack alone can be 15.8 GB!!! But only players with HDMI OUT can export it (Toslink & SPDIF CANNOT) and this further requires a receiver that can handle an HDMI in.
So, rather than recode the video, simply use "eac3to" to convert it to AC-3 - which should produce good 'ol Dolby 5.1 in most any modern receiver...you can always recode it if it's still not small enough.

Cheers & Good Luck!