Originally Posted by MG428
Sorry for my mis-knowledge but AFAIK DVD-A uses MLP, rgiht?
Audio is stored in DVD-Audio in LPCM format and is either uncompressed or has been losslessly compressed (MLP). This link has more info: http://en.wikipedia.org/wiki/DVD_Audio
So would FLAC tracks be converted to MLP if authored into a DVD-A disc? If not, how does this actually work?
Whether you need to use MLP compressoin or not depends on the number of channels and sample rate of your project. From that Wikipedia link:
"The maximum permissible total bit rate is 9.6 Megabits per second. Channel/resolution combinations that would exceed this need to be compressed.
In uncompressed modes, it is possible to get up to 96/16 or 48/24 in 5.1, and 192/24 in stereo. To store 5.1 tracks in 88.2/20, 88.2/24, 96/20 or 96/24 MLP encoding is mandatory"
If your project requires MLP compression and if the DVD-A authoring software does not have MLP encoding functionality (I haven't looked to see if it does or not) then you need to first encode to MLP using something like SurCode MLP.
And will there be any change in terms of sound quality due to any possible conversion?
If you author to the same sample rate and bit depth as your source then in theory there should not be any change in sound quality as LPCM/MLP are lossless.
My question here is about whether there exists or can theortically exist a multichannel FLAC track encoded in 24-bit/192kHz.
Yes it does. FLAC supports...
-- 1 to 8 channels
-- sample rate from 1Hz - 655350Hz
-- 4 to 32 bits
You will see there that not a single 5.1 FLAC track encoded in 24-bit/192kHz is available. The thing is that 2L might have not made them available, if they actually exist, for free download, and they might be only obtained by purchasing.
Just because FLAC supports 192kHz does not mean it makes sense to use that high of a sample rate. That high of a sample rate means much bigger file with questionable audible difference compared to 96kHz - but that is for discussion elsewhere...
Originally Posted by wmcclain
There must be a better forum for this topic.
Yes sorry I agree. MG428, if you have followup could you please start a thread at http://www.avsforum.com/avs-vb/forumdisplay.php?f=112
? Or for specific DVD-A authoring help maybe check out the good folks at the quadraphonics forum (see link in my earlier post). Thanks.