Dolby Vision now possible through MP4 Mux.

[sw5163]

How would I go about converting to Profile 9? The dovi_tool github page doesn't seem to mention this.

If you want perfect accurate image:
You will first need to modify those "reshaping data" in RPU for SDR->HDR. (basically impossible)

From my understanding, P5 RPU has "reshaping data" for ICtCp->YCbCr.
P8.1 RPU doesn't need "reshaping data" for HDR10->HDR10.
P8.4 RPU has "reshaping data" for HLG->PQ.
P7 RPU has "reshaping data" for processing the weird colour in EL (I'm not sure what it really does)

If just using P8.1 RPU, the result is very likely to be wrong.
And then you will need to find a way to inject-rpu into h.264, I don't think current build of dovi_tool supports that. But im sure Dolby in their lab can do it.
Once you get an SDR+RPU track, it's easy to remux it in mp4muxer.

If you are willing to accept some minor quality loss with re-encoding:
You could just put the h.264 track into PremierePro/LumaFusion/FinalCut/iMovie (Apple actually provides pretty good remapping algorithm for SDR->DV since they collaborate with Dolby) and re-encoding it to P8.1.

[kazuma]

there are no more 2 videofiles on rarbg with dolby vision movies (mkv remux). where is the dv-metadata in the files? is it from now on 1 videofile?

FEL can be either BL track+EL_RPU track or a single BL+EL+RPU track.
Dolby Vision is really complicated, you may want to do more research to learn how it actually works.

In human words:
BL(base layer): an HDR10 2160p YCbCr 4:2:0 10-bit video.
Dolby Vision fall back to this when not supported.

EL(enhancement layer): an HDR10 1080p YCbCr 4:2:0 10-bit video.
Supported device use BL and EL to mux a final 4:2:2 12-bit video.

RPU(reference processing unit): To indicate how filmmaker would like the video to be separately shown on 100nitSDR/600nit/1000nit/10000nit display. (despite the actual brightness record in BL)

There are basically 4 types of Dolby Vision video:
Profile 5(streaming): ICtCp 4:2:0 10-bit video + RPU.
It uses a more efficient color coding, but appear green and purple on non support device.

Profile 8.1: BL+RPU
Profile 8.4: Dolby Vision shot on iPhone, HLG BL+RPU

FEL(Full Enhancement Layer)
Profile 7 DT_DL FEL: BL in one video track, EL+RPU in another video track.
Profile 7 ST_DL FEL: BL+EL+RPU in one same video track.

MEL(Minimum Enhancement Layer)
Profile 7 MEL: BL+RPU same as 8.1 just in bluray container.

Please don't hesitate to point out my mistake!

you're right. i've got dolby vision on elvis with the program of reset_9999. While elvis had 1 videotrack in the mkv remux file. thnx. learnt again.

[Donpoku]

Hi do anyone still have their Ugoos am6/b plus and can test/confirm if it does 3d either MVC/iso playback?
Many thanks.

[danbez]

Is anyone familiar with a project called DoViBaker? https://github.com/erazortt/DoViBaker

My understanding from the project description is that this project claims to merge FEL into the BL. Now, I am not super familiar with all improvements reported here in this mega-thread, but if this is correct, would the resulting file allow us to take advantage of FEL improvements on devices that can't handle the FEL info directly?

[chros]

I just noticed that Plex client doesn't work without internet connection with local Plex server, wtf, Jellyfin came to the rescue.

I've been using Trick One listed on this site for years.

https://www.howtogeek.com/303282/how-to ... et-access/

Thanks, I had to reinstall Plex couple of months ago and I forgot about this option, now I added it back in the form of "192.168.1.0/24", it will turn out next time whether it works.

[RESET_9999]

you're right. i've got dolby vision on elvis with the program of reset_9999. While elvis had 1 videotrack in the mkv remux file. thnx. learnt again.

I've added dual-track dual-layer input support for (4-2) in DoVi_Scripts_1.5.6
https://drive.google.com/drive/u/1/fold ... J2M9DvOQRu

[kazuma]

you're right. i've got dolby vision on elvis with the program of reset_9999. While elvis had 1 videotrack in the mkv remux file. thnx. learnt again.

I've added dual-track dual-layer input support for (4-2) in DoVi_Scripts_1.5.6
https://drive.google.com/drive/u/1/fold ... J2M9DvOQRu

you are incredible man. for which scenario is this the best choice? also what must i choose for the third choice?

[RESET_9999]

you are incredible man. for which scenario is this the best choice? also for the third choice?

For when you have any MKV Profile 7 input (DT or ST): 4-2-3
If you can, I suggest you input the original bluray disc instead of some random mkv remux: 4-1-1
This is for LG TV playback. For x700/x800m2/oppo, just use the original bluray disc to TS with tsmuxer.

[kazuma]

do you have a videogif example to do this? you're gifs are very useful. (original bluray to TS with tsmuxer). i didn't that step before. i did only mkv to bluray folder and then to ts.

[RESET_9999]

do you have a gif example to do this? you're gifs are very useful. (original bluray to TS with tsmuxer). i didn't that step before. i did only mkv to bluray folder and then to ts.

I also did a bunch of other gif showing other things you can do with the script:
https://drive.google.com/drive/u/1/fold ... OVQkvbGaq8

[kazuma]

Thank you reset_9999! i'm gonna try it tonight. what is the fastest method to convert? the duration is very long. is the convert time with a full bluray much shorter?

another question: Are the new lg oled models playing DV mp4 and ts files via usb? or only profile 8? what is the profit of an LG C9? that it can play also profile 7?

[RESET_9999]

Thank you reset_9999! i'm gonna try it tonight. what is the fastest method to convert? the duration is very long. is the convert time with a full bluray much shorter?

another question: Are the new lg oled models playing DV mp4 and ts files via usb? or only profile 8? what is the profit of an LG C9? that it can play also profile 7?

check the link in my signature.

[Manixx2020beyound]

I’ve tested encoding on both windows & Mac
Doblyvision encoding:on windows & Mac
Using cpu to encode produced fantastic results ONLY using CPU.(encode takes a very long time) results are extraordinary
Ofcourse source matters.
Did anyone ever do an visual analysis of a uhd using its native Rpu vs a frame by frame analysis Rpu produced by resolve?

Both Rpu produced from windows & Mac look the same no official sceane count just frame count total so I guess that’s the way resolve handles Profile 5/8.1/8.4

[RESET_9999]

↑↑

original vs resolve 2.9 vs hdr10plus vs hdr10 madvr vs resolve 4.0

https://slow.pics/c/ipOD7eqm

[Manixx2020beyound]

Being that I can uterlize out put blanketing within my frame by frame analysis, trying to determine which will produce the best visual results this mode is for dv live encoding. According to doblyvision notes,
I can also do an 8.1 with both types of Rpu out from resolve using both analysis modes to compare

Futher testing with profile 5 & imfs ,
Tested using a decklink monitor card to oled & shogun, when the external hdr monitor match’s p3d65 or bt2020 of the imf meta data is passed to profile 5