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Post #701122

Author
rockin
Parent topic
The Audio Preservation Thread
Link to post in topic
https://originaltrilogy.com/post/id/701122/action/topic#701122
Date created
19-Apr-2014, 6:01 AM

PDB said:

I still consider 48 the final product, I'm just going to modify my edit chain to allow for both a 44.1 and 48 soundtracks. The only video/film formats to support 44.1 are laserdiscs and DTS Cinema Discs and they are long dead. So unless you are listen to one of those or using a PC, you are going to need 48. Everything now is 48; DVDs, Blu-rays, HDTV, streaming, etc. 48 is the minimum default today.

Most people I talk too, burn the soundtracks onto Blu-rays. That necessitates 48, so that's what my target has always been. Chewtobacco brings up good points, so moving forward it will be dual 44.1 and 48 release. 44.1 for you HTPC guys and 48 for the rest.

borisanddoris said:

If we go with 44.1khz for the DTS cinema projects, it'd have to be PCM as I don't believe DTS-HD MA and True HD like 44.1khz. 

Please correct me if I'm wrong. 

I'd be ok with a 44.1 and 48 dual inventory release. That or good instructions on how to re sample with good quality. 

I'm going to experiment and see if my Oppo 93 can play files muxed with 44.1.

As for the JP test in a real cinema, let's just say I still know a few kind people. :) 

 Dolby Digital and DTS (home theater version) both support 32, 44.1 and 48 (DTS later expanded to 96 but that never went anywhere). I have never seen Dolby Digital encoded in 32 or 44.1 but of course DTS exists in 44.1 on laserdiscs. DTS (theater version) as we know is of course always 44.1. DTS-HD MA and Dolby TRUEHD/MLP supports 32, 44.1, 48, 88.2, 96, 176.4, 192, etc. so they can do 44.1. None of that matters since the Blu-ray format won't allow for any soundtracks in 44.1, not in DTS, Dolby or PCM.

I'm curious about how your Oppo does with 44.1. The Oppo will play CDs so its DACs will support 44.1 and if you bitstream you receiver will support 44.1. I wonder if it will even work and if it does, will convert to 48, will lose sync, etc. Please let me know if you get anywhere with that, borisanddoris.

That's cool about the JP test.

rockin said:

I've had a similar problem when creating a blu-ray image with 44.1Khz track to play on blu-ray players. The only way I can watch it without loss of quality is via PC/HTPC.

 That's what I assume would happen. Rockin, out of curiosity what player did you test that on? Did the Blu-ray image play fine on your PC despite being non-spec for BD?

I couldn't make the image, as the sound did not conform with the specification required to make the image, and therefore the only option would be to convert the audio and lose sound quality. To combat this, I decided to mux it to a .ts/mkv file and play it on my pc instead.