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Preserving DTS LaserDisc tracks, specifically Jurassic Park — Page 14

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Yes, those were the times. The times of decent mixes and no retarded loudness war and huge dynamic ranges … sigh.

Luckily, that logo intro was also contained in the 35mm scan which was floating around a while ago. With all the dirt and scratches one has the true nostalgic experience of that movie, haha.

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Unfortunately, I only have DTS disc A, but not disc B, so I’m missing the last 50 min. of audio from the film. My disc has about the first 1 hr. 15 min of audio, up until Nedry gets killed.

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 (Edited)

Been trying to capture the DTS from the Japanese LD for “Hard Target”.

First recorded a minute of test audio from coaxial on a Pioneer X9 at 44.1 kHz, 16 bit wav using Sound Forge. BeSplit v0.9b6 had no trouble converting it with the following command:
BeSplit -core( -input c:\test16bit.wav -output H:\test16bit.dts -type dtswav -fix )

I then split the test16bit.dts file into 5 wav files using eac3to, and they all played fine without any distortion or anything. So far so good…

I went and captured the whole movie (settings unchanged), but when I tried to convert it to DTS, BeSplit stopped converting at about 45 minutes in (a few minutes before the side change). When trying to convert to 5 wav files, eac3to gave me this error:
This track is not clean.
libDcaDec reported the error “Invalid bitstream format”.
Aborted at file position 45350912.

I also tried converting the .wav to .dts using DTS Parser, but it stopped only about 10 minutes in (eac3to was able to convert this .dts file to 5 wavs, however).

Tried recording some tests at 24 bit and 32 bit float, and also tried recording using Audacity, but BeSplit wouldn’t convert any of these.

Anyone have any clues at to what could be wrong?

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If the first shorter run was successful, then there is no reason to change the recording software or format I’d say and of course technically, 16-bit-PCM is just right.

First thing I’d do is to make a second recording and compare the resulting files if they are identical to rule out any playback problem.

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Thanks, I was planning on recording it again, although I probably won’t get around to it until next year.

Any recommendations for comparing the recordings? FourierRocks?

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You’re welcome. The only combination which personally I used to be successful with, I described in another forum.

Even editors like Audacity or Cool Edit Pro screwed up the data on my system, however that doesn’t seem to be the issue in your case.

In terms of comparison, I’d just rely on built-in tools like “fc” under Windows or something similar and a hex editor of your choice for synchronization as after all, you’ll hardly be able to catch exactly the same position of several recording runs.

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Sounds good, I’ve never thought of viewing a wav file in a hex editor but I can probably figure it out, thanks.

Do you know where I can find that dtsconvert software you mentioned? Could only find some unrelated references and that LDDB thread in a Google search.

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Hello again everyone.

Another anniversary, another botched release of Jurassic Park on video. But not all is bad.

It has finally hit in 4K UHD and it looks pretty terrific. Alas, the DTS X track is based on the new mix done for the 20th and it still just isn’t right. Anyone have skills to rip a 4K disc and mux our 5.1 DTS audio? A dinner with Dr. Wu to whoever can accomplish this.

I can’t believe they finally got the image relatively right. It looks lovely.

“Alright twinkle-toes, what’s your exit strategy?”

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Buster D said:

Been trying to capture the DTS from the Japanese LD for “Hard Target”.

First recorded a minute of test audio from coaxial on a Pioneer X9 at 44.1 kHz, 16 bit wav using Sound Forge. BeSplit v0.9b6 had no trouble converting it with the following command:
BeSplit -core( -input c:\test16bit.wav -output H:\test16bit.dts -type dtswav -fix )

I then split the test16bit.dts file into 5 wav files using eac3to, and they all played fine without any distortion or anything. So far so good…

I went and captured the whole movie (settings unchanged), but when I tried to convert it to DTS, BeSplit stopped converting at about 45 minutes in (a few minutes before the side change). When trying to convert to 5 wav files, eac3to gave me this error:
This track is not clean.
libDcaDec reported the error “Invalid bitstream format”.
Aborted at file position 45350912.

I also tried converting the .wav to .dts using DTS Parser, but it stopped only about 10 minutes in (eac3to was able to convert this .dts file to 5 wavs, however).

Tried recording some tests at 24 bit and 32 bit float, and also tried recording using Audacity, but BeSplit wouldn’t convert any of these.

Anyone have any clues at to what could be wrong?

The issue your having is likely due to the differences in the frame headers for DTS on Laserdisc vs. DTS on DVD or BD.

Basically, you’ll need to run your wav through DTS parser, then correct the frame headers using a hex editor. After that you should have no problem decoding. This of course assumes you don’t have any ripping errors in the original file.

More detailed directions here:

https://originaltrilogy.com/topic/SUCCESS-Bit-Perfect-Audio-Capture/id/15988/page/1#707482

If I had some gum, I’d chew a hole into the sun…

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 (Edited)

Thanks for the response, but unfortunately DTS Parser stopped parsing the wav file about 10 minutes in. Is it possible to correct the wav file before parsing?

edit: If not, I’ll have to try that “cockos reaper” that zeropc mentioned in the thread you linked. Never had any problems with AC3 but DTS is another story…