Dolby Vision Dual PID/Single PID vs Dual LayerSingle Layer

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compsciphd
Posts: 2
Joined: Sat Jul 31, 2021 7:15 am

Dolby Vision Dual PID/Single PID vs Dual LayerSingle Layer

Post by compsciphd »

wondering if I can get confirmation if this quote from Mike is still valid

viewtopic.php?p=87804#p87804
mike admin wrote:
Wed Apr 15, 2020 8:06 pm
Yes. All tools - yusecope's, dvdfab an makemkv do the same thing - convert double pid encoding to single-pid encoding (UHD BD is always double-layer and stays double layer).
i.e. that dolby vision remuxes created by makemkv are still dual layer, they are just taking the dual pid nature of the bluray m2ts files and storing them in a single pid format? (ala https://professional.dolby.com/siteasse ... x-v1.2.pdf)

Yes, the quote is from before Matroska standardized the format, but I'm not sure besides for how the data is being referenced within MKV that anything else technically changed. Perhaps my gut feeling is wrong and things totally changed since then besides for the standardization.

back and forth here on why I'm asking. https://www.reddit.com/r/PleX/comments/ ... 7/h765j7o/
shawnc22
Posts: 637
Joined: Tue Jan 21, 2020 7:40 am

Re: Dolby Vision Dual PID/Single PID vs Dual LayerSingle Layer

Post by shawnc22 »

It’s still valid. DV mkvs are still dual layer with the EL just now on the same PID (video track) as the BL, hence why you see BL+El+RPU in media info and not just BL+RPU like a single layer P5 or P8 file. Only caveat in that original statement is that i don’t think DVDFab ever did what makemkv and yusecope’s tool did. They simply discarded the EL and just attached the RPU to the BL to create a single layer file.
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