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Re: Dolby Vision now possible through MP4 Mux.
Posted: Wed Dec 16, 2020 3:39 pm
by Wanderlust3K
Roberespa wrote: Sat Dec 12, 2020 4:24 pm
Maikel777 wrote: Sat Dec 12, 2020 3:55 pm
I also have a TV
LG OLED55B6V.
For the movie The Lord of the Rings.
Which Dolby Vision profile is best suited for my TV? 5, 7, 8 or 8.1
Thanks in advance.
-Hello:
I have found this information:
Profile 5 single layer with exclusive support for Dolby Vision
Single layer 8.1 profile with HDR10 + Dolby Vision compatibility
Profile 8.2 single layer with SDR compatibility
From what i can read Profile 8.1 would be the best as it has HDR10 + Dolby Vision.
But I am a newbie at this.
If someone clears it up.
I would be very grateful, it is also of my interest since I have the same television.
B6 are (or were if firmaware did not change that ) play Dual track/dual layer DV MP4 files, so he betters keeps just using the Dolby muxer tool, profile 7, and get a Dual track/dual layer MP4 DV file.
Re: Dolby Vision now possible through MP4 Mux.
Posted: Wed Dec 16, 2020 5:08 pm
by RESET_9999
Manixx2020beyound wrote: Wed Dec 16, 2020 2:33 pm
Screenshot.transfer=.png
Will produce u a rec 709.png
''transfer=hdr'' is only to tell madVR: hey this file is in PQ.
it has nothing to do with ffmpeg.
Re: Dolby Vision now possible through MP4 Mux.
Posted: Thu Dec 17, 2020 3:58 am
by pete19
Manixx2020beyound wrote: Wed Dec 16, 2020 2:33 pm
Screenshot.transfer=.png
Will produce u a rec 709.png
is this parameter for ffmpeg or madvr ?
Re: Dolby Vision now possible through MP4 Mux.
Posted: Thu Dec 17, 2020 4:06 pm
by RESET_9999
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.
Re: Dolby Vision now possible through MP4 Mux.
Posted: Thu Dec 17, 2020 10:57 pm
by Manixx2020beyound
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
Re: Dolby Vision now possible through MP4 Mux.
Posted: Fri Dec 18, 2020 12:25 am
by pete19
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.
I gotta dig into madvr, still no idea how to display an image with it...
Re: Dolby Vision now possible through MP4 Mux.
Posted: Fri Dec 18, 2020 12:26 am
by pete19
problem is that player-led LLDV is often less accurate than tv-led full STD DV
Re: Dolby Vision now possible through MP4 Mux.
Posted: Fri Dec 18, 2020 9:05 am
by DaMacFunkin
pete19 wrote: Fri Dec 18, 2020 12:26 am
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.
Re: Dolby Vision now possible through MP4 Mux.
Posted: Fri Dec 18, 2020 9:38 am
by pete19
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
Re: Dolby Vision now possible through MP4 Mux.
Posted: Fri Dec 18, 2020 10:20 am
by deadchip12
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?
Re: Dolby Vision now possible through MP4 Mux.
Posted: Fri Dec 18, 2020 10:25 am
by agneva
I bought the BluRay Player LG UBK90 for 138€. Now its 131,60 €.
It can play DV Dual Layer mp4.
Re: Dolby Vision now possible through MP4 Mux.
Posted: Fri Dec 18, 2020 3:01 pm
by DaMacFunkin
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.
Re: Dolby Vision now possible through MP4 Mux.
Posted: Fri Dec 18, 2020 11:23 pm
by chros
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
Re: Dolby Vision now possible through MP4 Mux.
Posted: Sat Dec 19, 2020 2:34 pm
by 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.
Re: Dolby Vision now possible through MP4 Mux.
Posted: Sat Dec 19, 2020 2:52 pm
by 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.