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I'm trying to understand the different file formats that might be called .dts.
What I think I understand is:
1) If the target is a dts music cd (44.1Khz) encoders will produce a dts encoded wav file. Most encoders will call this a .wav file.
2) This can be decoded by software players (vlc and foobar 1.x with dts plugin) without renaming the .wav to .dts.
3) In foobar 0.9x, the SPDIF plugin REQUIRES that these files be named .dts or .dtswav, so it knows to send them bit perfect via SPDIF. I believe that is the only difference (the file extension, no difference in the actual file).
3) These files can be encoded by any lossless format (flac, ma4) and be tagged. ma4's can be played back in iTunes (although only via an Airport Express to SPDIF to HT in windows. OSX can go straight to digital out. That's what I do in my car). flac files can be decoded in foobar 1.x with dts plugin. flac files can be played via SPIDF, in foobar 1.x (without the dts plugin installed) via an ASIO or other bit perfect driver (volume must be all the way up, no other processing, etc.).
3) If the target is a DTS DVD, it gets confusing. DTS encoders can produce different formats. For instance Surcode has three different formats. "dts padded" with a .dts extension, "dts wave" with .wav extension, and "Compact dts" with a .cpt extension. As far as playback the .wav version acts just like the 44.1 Khz files, as I tested last night (convert to flac, etc.). The spec sheet for DTS Enocder Pro says it puts out the "Compact DTS" format for DVDs, and "DTS Wave" for CDs.
What is still not clear to me is which of these formats you get when you demux a DVD. I know that to make a DVD you use the .cpt format, and it's interesting to note that for some DVD authoring software you have to rename it to .dts to get it to work. I don't know what the padded DTS is for, but I have VERY limited experience in authoring DVDs.
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