Dolby Vision now possible through MP4 Mux.

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pete19
Posts: 31
Joined: Thu Dec 03, 2020 12:37 pm

Re: Dolby Vision now possible through MP4 Mux.

Post by pete19 » Fri Dec 18, 2020 12:25 am

RESET_9999 wrote:
Thu Dec 17, 2020 4:06 pm
pete19 wrote:
Thu Dec 17, 2020 3:58 am
is this parameter for ffmpeg or madvr ?
????
I just answered that one post above.. that parameter is only for madVR...

if you want SDR screenshots, no need of FFmpeg. just tone map your HDR video straight in madvr.
yeah, your post was a bit unclear, but this one cleared it up. Thanks. :D

I gotta dig into madvr, still no idea how to display an image with it... :mrgreen:
Last edited by pete19 on Fri Dec 18, 2020 12:28 am, edited 2 times in total.

pete19
Posts: 31
Joined: Thu Dec 03, 2020 12:37 pm

Re: Dolby Vision now possible through MP4 Mux.

Post by pete19 » Fri Dec 18, 2020 12:26 am

Manixx2020beyound wrote:
Thu Dec 17, 2020 10:57 pm
This is an interesting read
According to this article dv-rgb8 is the old dv & LLDV is now mandatory on all doblyvision regular dv is not required
LLDV has it own profile as well.

https://www.google.com/amp/s/blog.semte ... s_amp=true
problem is that player-led LLDV is often less accurate than tv-led full STD DV

DaMacFunkin
Posts: 260
Joined: Tue Oct 30, 2018 4:17 pm

Re: Dolby Vision now possible through MP4 Mux.

Post by DaMacFunkin » Fri Dec 18, 2020 9:05 am

pete19 wrote:
Fri Dec 18, 2020 12:26 am
Manixx2020beyound wrote:
Thu Dec 17, 2020 10:57 pm
This is an interesting read
According to this article dv-rgb8 is the old dv & LLDV is now mandatory on all doblyvision regular dv is not required
LLDV has it own profile as well.

https://www.google.com/amp/s/blog.semte ... s_amp=true
problem is that player-led LLDV is often less accurate than tv-led full STD DV
Blame Sony.
Dolby set out with good intentions and now hardware manufacturers are calling the shots.

pete19
Posts: 31
Joined: Thu Dec 03, 2020 12:37 pm

Re: Dolby Vision now possible through MP4 Mux.

Post by pete19 » Fri Dec 18, 2020 9:38 am

DaMacFunkin wrote:
Fri Dec 18, 2020 9:05 am
Blame Sony.
Dolby set out with good intentions and now hardware manufacturers are calling the shots.
the problem is the approach, in player-led LLDV the TV/sink must pass over all calibration parameters and current settings/values (whatever can be passed via HDMI, EDID etc), and based off that the player must decode the Dolby stream accordingly.

This will most likely never be as accurate as decoding full tv-led DV in the TV hardware itself with all of those parameters plus additional data that cannot or wasn't transmitted...

in a perfect world it is, but practical tests have often shown the difference

deadchip12
Posts: 112
Joined: Thu May 02, 2019 2:49 am

Re: Dolby Vision now possible through MP4 Mux.

Post by deadchip12 » Fri Dec 18, 2020 10:20 am

Wanderlust3K wrote:
Wed Dec 16, 2020 3:32 pm
quietvoid wrote:
Fri Dec 11, 2020 9:43 pm
The CX is rumored to have lost dual track mp4 support.
Can confirm that, no more Dual track/dual layer mp4 files with CX.
So the dolby vision files created using the method in the OP can't be played using the tv internal media player anymore? What is the alternative?

agneva
Posts: 56
Joined: Mon Jan 06, 2020 11:42 am

Re: Dolby Vision now possible through MP4 Mux.

Post by agneva » Fri Dec 18, 2020 10:25 am

I bought the BluRay Player LG UBK90 for 138€. Now its 131,60 €.
It can play DV Dual Layer mp4.

DaMacFunkin
Posts: 260
Joined: Tue Oct 30, 2018 4:17 pm

Re: Dolby Vision now possible through MP4 Mux.

Post by DaMacFunkin » Fri Dec 18, 2020 3:01 pm

pete19 wrote:
Fri Dec 18, 2020 9:38 am
DaMacFunkin wrote:
Fri Dec 18, 2020 9:05 am
Blame Sony.
Dolby set out with good intentions and now hardware manufacturers are calling the shots.
the problem is the approach, in player-led LLDV the TV/sink must pass over all calibration parameters and current settings/values (whatever can be passed via HDMI, EDID etc), and based off that the player must decode the Dolby stream accordingly.

This will most likely never be as accurate as decoding full tv-led DV in the TV hardware itself with all of those parameters plus additional data that cannot or wasn't transmitted...

in a perfect world it is, but practical tests have often shown the difference
Totally agree, had this argument with many a LLDV evangelist, with the Oppo clone you can switch between Tv led and player led, there’s is a difference, on some content it is very noticeable.

chros
Posts: 20
Joined: Sun Sep 20, 2020 8:36 am

Re: Dolby Vision now possible through MP4 Mux.

Post by chros » Fri Dec 18, 2020 11:23 pm

Manixx2020beyound wrote:
Thu Dec 17, 2020 10:57 pm
This is an interesting read
According to this article dv-rgb8 is the old dv & LLDV is now mandatory on all doblyvision regular dv is not required
LLDV has it own profile as well.

https://www.google.com/amp/s/blog.semte ... s_amp=true
Is it a paid article by Dolby? :)
The guy only forgot to mention that due to LLDV "sinks" switch off most of their image processing, resulting in visible shittier image quality :D

thetoad
Posts: 136
Joined: Thu Jul 28, 2016 4:18 am

Re: Dolby Vision now possible through MP4 Mux.

Post by thetoad » Sat Dec 19, 2020 2:34 pm

there's been a lot of discussion that dolby vision causes problems for bluray authoring (bitrate limitations that vary based on potions of the disc when one gets into double and triple layers) and there's been much more uptake for it on streaming where it's easier to implement as constant bitrate limit). It could be that dolby is transitioning away from bluray based dv and putting their eggs more in the streaming basket.

mulucy
Posts: 76
Joined: Tue Jan 07, 2020 7:08 pm

Re: Dolby Vision now possible through MP4 Mux.

Post by mulucy » Sat Dec 19, 2020 2:52 pm

Eventually, Dolby Vision and other media companies will move away from physical media. We are minority, we have to accept it. Future is with streaming. The quality gap is very narrow and the convenience of streaming it's a winner for me. I am sure with better internet speeds, we will have the option to stream lossless auido in the future.

PlatypusW
Posts: 40
Joined: Mon Aug 03, 2020 2:14 pm

Re: Dolby Vision now possible through MP4 Mux.

Post by PlatypusW » Sat Dec 19, 2020 3:13 pm

mulucy wrote:
Sat Dec 19, 2020 2:52 pm
The quality gap is very narrow and the convenience of streaming it's a winner for me. I am sure with better internet speeds, we will have the option to stream lossless auido in the future.
I agree with the fact that sooner or later physical media will go (although dvds are still around). But no way is streaming quality gap narrow. There’s a massive difference in bitrate.

Unfortunately it will have nothing to do with internet speeds, streaming companies will not want to store lossless/high bitrate content, no matter how cheap or doable it is - it just means it’s even more profitable to store the current bitrate starved versions.

Even just lossless audio is unlikely to happen, the next step will be the still lossy AC4.

dapope
Posts: 11
Joined: Fri Oct 09, 2020 4:54 am

Re: Dolby Vision now possible through MP4 Mux.

Post by dapope » Sun Dec 20, 2020 12:22 am

For anyone with an LG CX, the new firmware update purportedly allows profile 7 files to be played in the internal player. I'm unable to test this myself for a few weeks since I'm staying away from home. Previously the LG CX could only play 8.1 files. Good news if true because, unlike 8.1, profile 7 is dual layer and I believe supports the 12 bit colour in FEL titles. It could also make it far easier to play DV files if we can just rip them (albiet there still needs to be an audio conversion) rather than also having to do the Yosupe 8.1.bat conversion.
Last edited by dapope on Sun Dec 20, 2020 2:12 am, edited 1 time in total.

rosavanwinkle
Posts: 54
Joined: Fri Aug 09, 2019 11:10 am

Re: Dolby Vision now possible through MP4 Mux.

Post by rosavanwinkle » Sun Dec 20, 2020 1:54 am

quick question i wanna ask
what profiles should we use or does this depend on the situtation
like whats the diffrence between profile 7 and profile 8.1?
Mediaplayer: Nvidia Shield TV Pro
TV: LG 55SK7900PLA
plex pass user

VOLUNTEER FOR TESTING FILES AND SCRIPTS.

rosavanwinkle
Posts: 54
Joined: Fri Aug 09, 2019 11:10 am

Re: Dolby Vision now possible through MP4 Mux.

Post by rosavanwinkle » Sun Dec 20, 2020 3:01 am

I noticed following yuescopes guide with ffmpeg
that the ffmpeg is rather fast converting the file to bl and el
is this because i'm using the wrong command?
it also creates only very small files (1GB) with a super low bitrate

is this something to do with my m2ts file?
i follow the first guide on his FEL TO MEL

movie i tested with was mission impossible fallout and 1917
how do i know if these movies are fel titles or mel titles?
Mediaplayer: Nvidia Shield TV Pro
TV: LG 55SK7900PLA
plex pass user

VOLUNTEER FOR TESTING FILES AND SCRIPTS.

dapope
Posts: 11
Joined: Fri Oct 09, 2020 4:54 am

Re: Dolby Vision now possible through MP4 Mux.

Post by dapope » Sun Dec 20, 2020 4:45 am

rosavanwinkle wrote:
Sun Dec 20, 2020 1:54 am
quick question i wanna ask
what profiles should we use or does this depend on the situtation
like whats the diffrence between profile 7 and profile 8.1?
Maybe if you looked at my post directly above yours you might get some answers...
If you google Dolby vision profiles it is easy to find the Dolby paper which lays out the differences, albiet somewhat vaguely.

7 theoretically allows for 12 bit colour with supported titles, while 8.1 does not. However you might find that profile 7 MEL (10 bit colour) works while profile 7 FEL (12 bit colour) does not. If neither works you might try 8.1. Outside of the 12 bit colour both 7 and 8.1 should present the same visually.

Your bio says NVIDIA Shield, I don't use that but there's plenty of talk of the Shield in this thread.

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