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Topic: DTS Disks hack

Gorges Gorgero
Film Handler

Posts: 11
From: Cordoba / Spain
Registered: Jul 2018

posted 01-12-2019 02:56 PM

Hello friends, I have several DTS discs in several languages of the same movie, I have verified that the id number of the movie is different in each language, so you can not play a disc with a movie from another country.
I use foobar2000 to play the aud files and see the id number.

Does anyone know how to change the id number of the aud files in order to use the audio dts in a movie from another country?

Does anyone know how to connect the DTS reader the projector to a computer or player to play the audio from a disc?

And the most difficult thing, someone has studied to remove the audio of a bluray DTS and try to put it in a DTS disc to reproduce it in the processor?

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Carsten Kurz
Film God

Posts: 4340
From: Cologne, NRW, Germany
Registered: Aug 2009

posted 01-12-2019 04:14 PM

I guess that the only realistic option nowadays is to convert the original DTS discs into wav and try to find a sync mechanism between a projector and a PC audio player. Do you have a real DTS timecode reader, or a DTS player? I guess mere mortals won't get a chance to create DTS discs that play on DTS hardware players.

- Carsten

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Gorges Gorgero
Film Handler

Posts: 11
From: Cordoba / Spain
Registered: Jul 2018

posted 01-12-2019 04:24 PM

I have real 35mm DTS timecode reader.
Does anyone know how to connect the DTS 35mm reader to any player or computer?

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Kieran Hall
Film Handler

Posts: 28
From: Coventry, UK
Registered: Nov 2017

posted 01-12-2019 06:34 PM

It's probably worth mentioning that afaik the theatrical DTS (now Datasat) APTX-100 codec and the consumer Coherent Acoustics codec that appears on Blu-ray don't actually have a lot in common other than the branding. I doubt it'd be any easier to use this as a source to create theatrical DTS discs than, say, uncompressed PCM.

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Carsten Kurz
Film God

Posts: 4340
From: Cologne, NRW, Germany
Registered: Aug 2009

posted 01-12-2019 07:39 PM

The DTS reader just receives power and delivers a TTL-like simple pulse signal (following the optical short/long timecode track). The DTS-6D manual has a basic schematic.
It shouldn't be complicated to feed it into available ports of common computers. Then someone would have to develop a decoder for the timecode. Not too complicated, I guess, but someone has to do it. Once you get a timecode signal, you could sync original DTS discs converted to WAV, or play a homecinema DTS/AC3 track using the same method. One would need a suitable sync point, but that should be trivial compared to the timecode decoder. It's not space technology, but it seems no one has done it. Most people seem to be fine to buy used DTS players.

I haven't seen anything on the net regarding decoding of DTS optical timecode. I would think that it is quite similar in complexity to SMPTE timecode.

Kieran - cinema DTS sound is no longer with DATASAT. They 'outsourced' it to Inventure Studios.

- Carsten

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Mark Gulbrandsen
Resident Trollmaster

Posts: 16657
From: Music City
Registered: Jun 99

posted 01-13-2019 04:50 PM

quote: Gorges Gorgero
Does anyone know how to connect the DTS 35mm reader to any player or computer?

Yes, I have done this in Special Venue 15/70 systems before. You have to have a shaft encoder attached to a drive gear or sprocket on the projector and run the shaft encoder at the required number of turns per frame of film. The shaft encoder ttl output feeds the DTS Time Code Generator and the output of the generator feeds the DTS player. Its pretty easy once you get the shaft encoder turns per frame working right. you can set the required time code start time for a given movie. They are not all the same... So that part you are going to have to figure out.

Mark

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Daniel Schulz
Master Film Handler

Posts: 387
From: Los Angeles, CA USA
Registered: Sep 2003

posted 01-13-2019 10:44 PM

quote: Gorges Gorgero
Hello friends, I have several DTS discs in several languages of the same movie, I have verified that the id number of the movie is different in each language, so you can not play a disc with a movie from another country.
I use foobar2000 to play the aud files and see the id number.

Does anyone know how to change the id number of the aud files in order to use the audio dts in a movie from another country?

Ordinarily the DTS Serial Number remained the same across various versions of a film. The only reason DTS would have issued separate serial numbers is if various versions of the movie were different *cuts* and would thus have sync problems if you tried to play a different language track with the OV picture.

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Marco Giustini
Film God

Posts: 2713
From: Reading, UK
Registered: Nov 2007

posted 01-14-2019 05:51 AM

Good point, that was one of the advantages of DTS - the ability of changing the language by swapping the disks.

I am curious to see this foobar software - WinAMP used to have a plugin to run non-encrypted tracks. Do you need a plugin?

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Carsten Kurz
Film God

Posts: 4340
From: Cologne, NRW, Germany
Registered: Aug 2009

posted 01-14-2019 09:57 AM

Yes, there is a foobar2000 plugin on sourceforge - it seems it can deal with 'encrypted' DTS discs as well. I don't know wether it's advisable to keep this low profile. I guess no one is using it for pirating, so, it's more for 'academical purposes' anyway...

Any opinion on that, Daniel?

- Carsten

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Brad Miller
Administrator

Posts: 17775
From: Plano, TX (36.2 miles NW of Rockwall)
Registered: May 99

posted 01-14-2019 11:35 AM

The only specific need most people want a PC player of DTS theatrical audio files is:

*Buy a bluray of a movie
*Rip the video from it
*Rip the DTS theatrical audio discs
*Marry the two in an editing program
*Export the new file
*Author a bluray disc
*Burn those files to a bluray blank (or a USB stick, etc)

Why all of this effort? It's to get rid of those godawful "near field" remixes on blurays that are the worst thing to ever happen to movie sound, yet the studios have been scammed and brainwashed into thinking they need to do it by various audio engineers and audio post-production houses desperately seeking work.

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Sean McKinnon
Phenomenal Film Handler

Posts: 1712
From: Peabody Massachusetts
Registered: Sep 2000

posted 01-14-2019 02:36 PM

Mark,

The DTS time code generator I am familiar with needs you to re arm the generator for each reel number has this been a problem for you?

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Daniel Schulz
Master Film Handler

Posts: 387
From: Los Angeles, CA USA
Registered: Sep 2003

posted 01-14-2019 04:18 PM

quote: Carsten Kurz
Yes, there is a foobar2000 plugin on sourceforge - it seems it can deal with 'encrypted' DTS discs as well. I don't know wether it's advisable to keep this low profile. I guess no one is using it for pirating, so, it's more for 'academical purposes' anyway...

Any opinion on that, Daniel?

Well, I no longer speak officially for anyone involved, but as observed upthread, the old DTS theatrical format is now supported thirdhand by Inventure Studios (who have licensed the technology from Datasat, who acquired it back when they bought the DTS Digital Cinema division from DTS). I think it's all sufficiently removed from today's reality of Digital Cinema and most content being watched via streaming services anyway that no one's getting bent about someone hacking the old DTS disc encryption.

As to the *why* - Brad is probably correct when he observes it's in many cases the only way to listen to the original theatrical mix in a home theater. I don't share his antipathy towards near field remixes; YMMV.

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Brad Miller
Administrator

Posts: 17775
From: Plano, TX (36.2 miles NW of Rockwall)
Registered: May 99

posted 01-14-2019 06:53 PM

If you are ever in the position of being able to directly compare a 35mm print with DTS, SRD or SDDS against a bluray near field remix, you will totally understand why the near field remixes are total garbage. [Wink]

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Carsten Kurz
Film God

Posts: 4340
From: Cologne, NRW, Germany
Registered: Aug 2009

posted 01-14-2019 07:07 PM

It's home video, and these discs are simply not made for people who play them on high-end cinema-type audio systems, but for mainstream flat screen tv sets and soundbars, and it does make sense to adjust them for these typical playback conditions, it's a question of majority. Same as the colorspace for Bluray is reduced to rec.709 and not P3.

Yes, it would probably be best to put the nearfield mix on DVDs and Blurays as the default/first audio track in AC3, and add the original theatrical mix as e.g. dts HD. No one concerned about playback performance would care to be forced into switching over or to buy dts HD or TrueHD capable equipment.

- Carsten

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Gorges Gorgero
Film Handler

Posts: 11
From: Cordoba / Spain
Registered: Jul 2018

posted 01-15-2019 02:42 AM

My intention is not to put the DTS audio on a bluray or DVD, I have a Kinoton FP30D equipped with a DTS reader, I have a DTS XD10 and a DTS-6D, I have 35mm movies from other countries (Russian, English) and I would like I can put the audio in Spanish, I have some DTS discs of my movies in English and I would like to be able to change the audios of this album to Spanish in some way, since the DTS discs in Spanish I can not find them anywhere. This is why I ask if someone knows how to put audio files in some processor of these, I have the wav removed from the bluray and I would like to hear them at the same time I project my 35mm movie. This is why someone knows how to pass wav to aud, and if someone knows how to connect the DTS reader to a player or PC.

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