Sonic/Roxio DVDit Pro HD: BD-50, AVC, VC-1 and Multi-channel PCM pass-through.

Thanks Course. I looked at that before... not sure why it slipped my mind.

"I'm not so certain that BD supports multichannel wave."
I'm pretty sure it does.... I remember reading it somewhere.

"..... I looked at that before... not sure why it slipped my mind."

On the other hand... it looks as though people are having trouble with the multi channel pass-through.

http://forums.support.roxio.com/index.php?showtopic=49772

Not sure whether this is an operator error or not... but roxio doesn't come with a trial and that's a lot of money to spend without one.

"I'm pretty sure it does.... I remember reading it somewhere. "

So do I however someone pointed out that it's a lossless encoding of the channels. To me that reads they're using something similar to Vegas's Perfect Clarity Audio. There'd also be little point to encoding the .1 channel at the same bitrate as the rest of the channels.
Reading the post you linked to on the Roxio forum seems to support what I'm saying as PolyWave is the same as what Vegas can do.
You could be right of course, I don't know anything specific about how the file has to be prepared, the channels muxed etc, etc. All I'm saying is it might not be as simple as stereo PCM.


Bob.

Actually Bob... I just tested it out (figured out how to get multi channel onto blu ray as well)

First I copied a raw multi channel wav file to BD... the computer would play it but the PS3 would not ("unsupported data")

But then I used TSmuxer to mux a 5.1 multichannel wav with a bit of sample video and output that as a M2TS... copied that to disk, and it played no problem.... even the LFE track came through as the lfe. The PS3 reads it as: " Linear PCM, 5.1ch, 48Khz, 4.6Mb/s"

Soooo... for those interested.... use TSmuxer to get a multi channel wav file onto a blu ray movie!!

Of course now the question... how do you get it onto disk as a BDMV as opposed to a simple data disk....

DVDa naturally wants to recompress everything siting "non compliant". I went back to TSmuxer and used the "create Blu Ray disk" option and it spit out a blu ray disk in a folder. I took that to Image Burn, created an ISO... then burned that to disk as a BDMV...... works fine!!

Well done.
I'll try to find the discussion I was referring to but don't hold your breath. It *may* have been Dolby TrueHD or some such they were talking about, too many audio formats on BD to keep track off in my head.

I would thought all those channels of waves would be chewing up a sizeable amount of the bandwidth that'd be better used for vision.

Bob.

There is something to that..... linear PCM takes up a LOT of room on the disk.... but I was thinking more along the lines of simple slide-show disks with some high quality music tracks.... use some delay from the front to rear for that "spacial" sound.

In that scanrio why not use Dolby anyway?
As I recently discovered for really simple slideshow DVDs there's other ways to create these so that the vision uses almost no bandwidth. DVDA does not author such things though.

Bob.