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23rd September 2022, 19:10 | #1 | Link |
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How to unfold a 2.0 stereo mix to its original 4.0 channels
Yesterday, I saw some information on blu-ray.com that caught my attention: Bad Day at Black Rock was released to theaters in both mono and four-track stereo. The latter has been used for Blu-ray, with the four tracks folded down into a 2.0 mix encoded in lossless DTS-HD MA 2.0.
Is there any software that will open a stereo file to see all the discrete channels? I want to “unfold” or “De-Matrix” the mix back to its original four LCRS channels. |
23rd September 2022, 21:30 | #2 | Link |
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Nope.
If the track was AC3 maybe a Dolby Prologic mix can be expected, but with DTS-MA we can't expect it. DTS-MA have the layout LCRS, if was downmixed maybe is because the surround channel was near empty.
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24th September 2022, 11:04 | #3 | Link | |
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Quote:
AFAIK, all 4 channels are there, it's like a Dolby Stereo mix (424). So, I guess we must be able to hear the four channels with a home cinema with Dolby ProLogic: Left, Center, Right and Surround, even if the mono surround channel is almost empty (I think it was common in Cinemascope films of that era). I want to get 4 mono channels from that 2.0 stereo track and export them like LPCM 4.0 or DTS-HDMA 4.0. I don't understand why they didn't encode it as 4 track discrete. They rarely include such a track, there are a few exceptions such as “Garden of Evil” (also Cinemascope): the also included DTS-HD Master Audio 4.0 mix (recreating the four track stereo presentation of the original theatrical exhibition). (blu-ray.com) Last edited by maldon; 24th September 2022 at 11:07. |
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2nd October 2022, 08:55 | #4 | Link | ||
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Quote:
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2nd October 2022, 20:02 | #5 | Link |
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See also that thread LT+RT to surround, how?
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