Dolby Vision now possible through MP4 Mux.

[DaMacFunkin]

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]

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]

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]

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

[DaMacFunkin]

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]

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

[thetoad]

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]

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]

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]

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.

[rosavanwinkle]

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?

[rosavanwinkle]

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?

[dapope]

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.

[akelu]

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.

That's so awesome. I just started researching this because of the CX fixed dolby vision raised blacks.

I have just one question. I know that the LG Webos Plex can't play lossless atmos on dolby vision remux, but is it possible to play lossy atmos from blu-ray remux? My understanding is that if a blu-ray contains a TrueHD atmos track, that it also contains a lossy version as a fall-back. Is that correct? And can the CX play that?
Because i have a soundbar(even though its a pretty good one), and i think i would sacrifice lossless atmos for lossy if i can get dolby vision.
Thanks

[pete19]

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.

there is a difference visually. DV profile 8.1 is single layer, hence it is 10bit 420, while profile 7 FEL is dual layer resulting in a 12bit 422 signal. Profile 7 MEL is only ever 10bit 420 as well.

The difference between 10bit to 12 bit is negligible, because (a) you're eyes won't see it (most likely) and (b) because most current end consumer TVs are 10bit panels at best.

But the difference between 420 and 422 chroma subsampling is perceivable, THIS is the real deal. 420 is 1/4 color resolution while 422 is 1/2 color resolution (of original full color). You get DOUBLE the color resolution.

422 is what we want.

All pro signals and backups used to be 10bit 422 (until storage became much cheaper and compressed RAW formats came around).

Color resolution is more important than bit depth.