Dolby Vision now possible through MP4 Mux.

Please post here for issues related to UHD discs
H4537H
Posts: 1
Joined: Tue Apr 30, 2024 5:05 pm

Re: Dolby Vision now possible through MP4 Mux.

Post by H4537H »

Following the CoreElect Dolby Vision development with great excitement.
Can someone please explain the difference between Profile 7 Dolby Vision DTDL FEL vs STDL FEL?

Have I understood correctly that a UHD disc with Profile 7 DTDL FEL remuxed to mkv with Profile 7 STDL FEL is a lossless conversion? And that the dual-track dual-layer FEL of the UHD are just "merged" into one single-track dual-layer FEL? And if the conversion is lossless, is it also possible to do the conversion the other way? (STDL -> DTDL).

Asking because I'm thinking about replacing my old OPPO UDP-203 (playing BDMV structures today) and I'm wondering if I get the exact same quality from converting UHD BDMV backups to mkv's and using an UGOOS instead?

Thanks in advance :-)
RESET_9999
Posts: 2090
Joined: Mon Aug 05, 2019 7:12 pm

Re: Dolby Vision now possible through MP4 Mux.

Post by RESET_9999 »

yes:

PQ: https://slow.pics/c/jOvJUSbf
Plot: https://slow.pics/c/BaRgRP7w
anta777 wrote:
Tue Apr 30, 2024 3:41 pm
Dear RESET.
Point Break (2015) have brightness what get expanded via FEL?
Green mile is ok
anta777 wrote:
Tue Apr 30, 2024 4:07 pm
The Green Mile 1999 DV-8 what grade/master check?
RESET_9999
Posts: 2090
Joined: Mon Aug 05, 2019 7:12 pm

Re: Dolby Vision now possible through MP4 Mux.

Post by RESET_9999 »

H4537H wrote:
Tue Apr 30, 2024 5:20 pm
Asking because I'm thinking about replacing my old OPPO UDP-203 (playing BDMV structures today) and I'm wondering if I get the exact same quality from converting UHD BDMV backups to mkv's and using an UGOOS instead?
yes it's the same quality. It's just two different ways of muxing profile 7.
kazuma
Posts: 162
Joined: Fri Nov 08, 2019 9:51 pm

Re: Dolby Vision now possible through MP4 Mux.

Post by kazuma »

Is cmv4.0 and cmv2.9 supported by ugoos? And is the plex app getting a update via internet or does it get only updated with the new version of coreelec?
RESET_9999
Posts: 2090
Joined: Mon Aug 05, 2019 7:12 pm

Re: Dolby Vision now possible through MP4 Mux.

Post by RESET_9999 »

Of course, it supports the latest CM version.
Ugoos + Coreelect is KODI only. There's no PLEX app but you can use an addon that will give you access to your PLEX library but the app playing the movies is always KODI.
morbius
Posts: 176
Joined: Mon Aug 13, 2018 7:17 am

Re: Dolby Vision now possible through MP4 Mux.

Post by morbius »

morbius wrote:
Tue Apr 30, 2024 9:47 am
so before buying a new TV, is there a need to check for CMv4 support? I've not seen a spec sheet that goes to that level of detail.
They don't make new TVs with older cmv2.9 chip anymore. So any TV after 2019 is most likely cmv4.0
[/quote]

thanks for the follow-up. So might older players like the Panny UP-BD820 and Oppo 203 be only CM v2.9, or does this really only matter at the display end of the chain?
RESET_9999
Posts: 2090
Joined: Mon Aug 05, 2019 7:12 pm

Re: Dolby Vision now possible through MP4 Mux.

Post by RESET_9999 »

the player must support it otherwise it fallback to the cmv2.9 bloc. This is why the ugoos is a big deal, only device that support both CMV4.0 and P7 FEL
texwatson
Posts: 10
Joined: Wed Apr 10, 2024 12:18 am

Re: Dolby Vision now possible through MP4 Mux.

Post by texwatson »

Ugoos AM6+, Ugoos AM6B+ and Minix U22-XJ
morbius
Posts: 176
Joined: Mon Aug 13, 2018 7:17 am

Re: Dolby Vision now possible through MP4 Mux.

Post by morbius »

RESET_9999 wrote:
Wed May 01, 2024 9:37 pm
the player must support it otherwise it fallback to the cmv2.9 bloc. This is why the ugoos is a big deal, only device that support both CMV4.0 and P7 FEL
thanks. So are P7 discs being released that have CMv4.0 metadata in addition to the 2.9, even though UHD players like the Oppo 203 and Panny 820 don't support 4.0 ?

Having run the Ugoos for a week now I've really been impressed by its DV playback of my P7 mkv files, my Panny 820 is going to be gathering dust from now on.
ArArdin
Posts: 196
Joined: Fri Nov 20, 2020 1:40 pm

Re: Dolby Vision now possible through MP4 Mux.

Post by ArArdin »

Same Ugoos experience here. I thought I'd abandoned my AM6+ forever, but latest CoreElec certainly revived this machines usage.
Enjoying DoVi like never before.
RESET_9999
Posts: 2090
Joined: Mon Aug 05, 2019 7:12 pm

Re: Dolby Vision now possible through MP4 Mux.

Post by RESET_9999 »

morbius wrote:
Thu May 02, 2024 9:24 am

thanks. So are P7 discs being released that have CMv4.0 metadata in addition to the 2.9,
Yes, its still rare but it seems there's more cmv40 bluray release lately.
Also, when the bluray is only MEL cmv2.9, I take the cmv4.0 rpu from web streaming.
staknhalo
Posts: 161
Joined: Sun Oct 11, 2020 12:05 am

Re: Dolby Vision now possible through MP4 Mux.

Post by staknhalo »

RESET_9999 wrote:
Thu May 02, 2024 10:47 am
morbius wrote:
Thu May 02, 2024 9:24 am

thanks. So are P7 discs being released that have CMv4.0 metadata in addition to the 2.9,
Yes, its still rare but it seems there's more cmv40 bluray release lately.
Also, when the bluray is only MEL cmv2.9, I take the cmv4.0 rpu from web streaming.
I know you said at one time you were taking your SDR 1080p and reencoding as HDR10 with DV you made IIRC - what about DV4 (SDR I think) - you ever look into making that? I can't even recall any real world examples found, so prob not, just asking.
RESET_9999
Posts: 2090
Joined: Mon Aug 05, 2019 7:12 pm

Re: Dolby Vision now possible through MP4 Mux.

Post by RESET_9999 »

staknhalo wrote:
Thu May 02, 2024 5:40 pm
I know you said at one time you were taking your SDR 1080p and reencoding as HDR10 with DV you made IIRC - what about DV4 (SDR I think) - you ever look into making that? I can't even recall any real world examples found, so prob not, just asking.
Well P4 is a dual-layer format and I don't think there's any public tool that can do that.
Also, the EL probably would need to be graded to HDR otherwise that would be just SDR-100nits in a DV/HDR container.
userr
Posts: 63
Joined: Sat Apr 04, 2020 7:10 pm

Re: Dolby Vision now possible through MP4 Mux.

Post by userr »

RESET_9999 or someone else who might know..

I have a Sony A9G 77" OLED from 2019, i used to be into this discussion and DV development for like a year or two after getting the TV.
Not so much anymore, so im trying to read up.

As far as i can remember, this TV does NOT have player-led (might be wrong)

Is there a point in me upgrading my SHIELD to Ugoos who can play FEL?
Will there be a difference on my TV?
Im guessing yes, cause its the Ugood doing the encoding, and my TV just showing it, yes?

Thanks guys
texwatson
Posts: 10
Joined: Wed Apr 10, 2024 12:18 am

Re: Dolby Vision now possible through MP4 Mux.

Post by texwatson »

https://www.youtube.com/watch?v=HtoDgkBz7Xs&t=654s

Shield suffers from red push, so pretty much any other option will be a better option.
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