Cinema DTS - general thread

[spoRv]

I noticed that the only thread about theatrical a.k.a. Cinema DTS is more than 15 years old, so I wonder if there is still someone playing with it nowadays - except me, I mean... :p

Anyone?

[filler56789]

I noticed that the only thread about theatrical a.k.a. Cinema DTS is more than 15 years old,

Link to it, please. :)

[spoRv]

Link to it, please. :)

https://forum.doom9.org/showthread.php?t=43730

[filler56789]

https://forum.doom9.org/showthread.php?t=43730

Thanks for that. *THUMBS UP*

Well, some years ago I told someone @ Videohelp to get in touch with Maxim Anisiutkin... and apparently Maxim found a way to decrypt+decode the contents of a Cinema-DTS disc.

https://forum.videohelp.com/threads/347217-DTS-Audio-any-updates-%5BSOLVED%5D

TL;DR

just go to the last post in that thread :-|

[spoRv]

Well, I forgot to add that I know how to decode it :D and that I'd like to know if someone here is using Cinema DTS track to put in sync with BD or UHD-BD!

[tebasuna51]

If the decoded audio (now in PCM samples) is not in sync with video from BD, the procedure is the same no mather the source is dtsc or any: use a audio editor like Audacity or equivalent.

And after recode to a format more compatible with players.

[filler56789]

I wish that there existed a software APT-X encoder.:)
Muxing APT-X streams into the AVI container would be trivial,
but Matroska support would depend on Mosu's interest, of course.:)

[spoRv]

I wish that there existed a software APT-X encoder.:)

IIRC you can encode in APT-X100 using the same FooBar plugin that decodes it... but, what's the point? Unless you are producing DTS CD-ROM to use in theaters - and, in that case, you will also need to produce the DTS.EXE file with syncs etc.

[filler56789]

IIRC you can encode in APT-X100 using the same FooBar plugin that decodes it...

Ooops, you are correct, I wasn't aware of that.

According to the changelog:

11/22/2019:
Version 0.1.6 - *.AUD file encoder added.

but, what's the point? Unless you are producing DTS CD-ROM to use in theaters - and, in that case, you will also need to produce the DTS.EXE file with syncs etc.

I was thinking of a DirectShow decoder, for example.
It should work straightforward with NON-encrypted streams, at least.

[junh1024]

I noticed that the only thread about theatrical a.k.a. Cinema DTS is more than 15 years old, so I wonder if there is still someone playing with it nowadays - except me, I mean... :p

Anyone?


If you're thinking OMG!!! I'm listening to the original Cinema DTS audio this is what that creators intended!!!111!! there are some issues with that.

1. The bitrate of Cinema DTS is low 882kps that I wouldn't be surprised if DD 448kps beats it since AC3 is based on the more efficient MDCT, not ADPCM. Also, it requires a bunch of processing until it's in the correct "consumable" state.

2. The home environment is different to the cinema environment, the Acoustics are different due to factors like bass buildup. There is usually a dedicated home theatre mix created which is QC'd & approved for home listening environments, and bass buildup etc is compensated.

Conclusion: Unless the Cinema mix is significantly different, I would recommend listening to the consumer Mix as it's HQ and optimised for the home environment.

Case study: The Matrix. I've discussed with someone on AVS forums, comparing Dolby Atmos vs previous DD/THD vs the cinema DTS mix. In addition to being higher quality/bitrate, the Dolby Atmos mix is closer to the cinema DTS mix then the previous mixes. How can this be true? They probably went back to the original ProTools project and reworked it for Dolby Atmos.

[spoRv]

I'm well aware of what you wrote, still...

1) the APT-X100 used ADPCM divided in four bands; compared to the original, the only downside is more noise - at the contrary of different problems of other psychoacoustic codecs; now, it may be true that DD 448kbps sounds better, but Cinema DTS sounds good, and sounded better than theatrical DD 320kbps IMHO.

2) true; but a simple "Cinema EQ" setting on an HT amplifier (if present, of course) resolves the problem.

Speaking of which - and adding The Matrix CDTS as a bonus: https://forums.audioholics.com/forums/threads/cinema-eq-re-eq-thx-re-equalization.124985/

;)