Re: [MPlayer-users] cdda:// -ac ffdts

[Ergzay <ergzay@xxxxxxxxxxxxxxxxxxxxxxx>]

On 2005/09/22, at 4:14, Alexander Roalter wrote:
> Ergzay wrote:
> > On 2005/09/22, at 1:26, ACS wrote:
> > > > AudioCD can't be DTS. If you're saying it can, then show us the 
> > > > standard
> > > > that says so.
> > >
> > > Do some google-ing yourself.
> > > At the start of DTS sound in theatres, it was all audio CD source.
> > > timecode stuff was used to timesync audio to the video.
> Sorry for reading this so late, but Audio-CDs with dts never existed. 
> The CDs used in theaters to store the movie audio int the system dts 
> (which has not really *that* much to do with the dts stream found on 
> DVDs) is on a CD-ROM and is accessed as a file rather some obscure 
> Audio CD format. It's like having a WAV (or somewhat compressed) file 
> with timecode meta infos, and the player/projector's sound unit plays 
> the audio sample with the appropriate sample number, given to him from 
> the projector. This format at first was secret and later was cracked, 
> so it is possible for projectionists to copy the CD-Roms delivered 
> with the film reels and extract from them the digital audio, also a 
> reason why some major distributors did not ship their films with DTS 
> recently. This situation has improved lately, since the DTS on CD-ROM 
> standard has been altered (via the option that a new 
> codec/encoding/decoding algorithm has been delivered on newer 
> Soundtracks, which updates the player hardware. Older DTS-Hardware is 
> not able to update itself, so these had to be replaced (or go back to 
> play SRD or SDDS or even Analogue).
>
> Now to my knowledge, the new DTS has not (yet) been hacked.
Well from looking on line you can apparently buy music CDs with DTS 
audio on them. My guess is that these CDs are in the format of DTS wav 
files on a regular CD, which are what people call "DTS CDs". On the 
other hand I read instructions on how to burn an actual audio CD 
containing 5.1 Dobly Digitial audio tracks, not just files on the disk.

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