Dolby Vision now possible through MP4 Mux.

[Mattl0]

Anyone tried the 5.0 fw from Ugoos on am6 b? Wonder how’s the dv playback. I will test it when I have time (currently the unit is somewhere, need to find it lol) .

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Do you know where I can download the firmware from?

Here you go https://mega.nz/folder/fo8yHCKa#BMc78ichXyiEB1OKyqA0lw

[ArArdin]

Here you go https://mega.nz/folder/fo8yHCKa#BMc78ichXyiEB1OKyqA0lw

Would you happen to know if this FW is for Ugoos AM6-b only?

I still have a neglected AM6 Plus with dualboot CoreElec stashed away somewhere.

[mtotheb]

It should probably be compared to the FEL disc, in the hope that they're the same.

I don’t have the tools to compare the FEL disc to the Version thats being sold here, but the distributer responded to my email saying the A24 Disc‘s DolbyVision is just "upscaled" to FEL while they wanted to do it in the most "native" way as the Content they received. I wonder why they didn’t go with MEL P7 then but maybe the new way going forward is doing it in P8 now?

[quietvoid]

Not sure but it still sounds like an oddity.

[quietvoid]

it says that on the original M2TS file on the bluray disc?

The m2ts doesn't have the Dolby Vision descriptor, so MakeMKV probably gets the info from probing the HEVC RPUs.

The Koch Media release doesn't seem right to me. The levels and L1 metadata are pretty different.
It's true that the A24 FEL doesn't make much difference, though.

Also, A24 has 3 trim passes (100, 600, 1000) while Koch Media only has one for 100 nits, and it's almost useless (max 2050 adjustment, where 2048 is no adjustment).
So I don't know what they're on about but the two aren't going to be the same at all in Dolby Vision playback.

Some funny thing is that the HDR10 is encoded with this:

Maximum Content Light Level : 420 cd/m2
Maximum Frame-Average Light Level : 69 cd/m2

Seems like a mess of an authoring job here, or a joke. The L1 is consistently over 600 nits, with a 1477 nits peak.
Koch Media also has L5 set to zero, when there are letterbox bars.

[RESET_9999]

great analysis as usual @quietvoid ... I need to try to understand your vs-nlq script (assuming that's what you used to check FEL)...

[andy22]

@RESET_9999 Hi quick question, so using your scripts its not possible to convert DV P8/7 to P5? Is that because of the different colorspace?

thanks

[Mattl0]

Here you go https://mega.nz/folder/fo8yHCKa#BMc78ichXyiEB1OKyqA0lw

Would you happen to know if this FW is for Ugoos AM6-b only?

I still have a neglected AM6 Plus with dualboot CoreElec stashed away somewhere.

Your am6 plus will work with that fw : )>

[ArArdin]

Your am6 plus will work with that fw : )>

Thanks, Mattl0

[mtotheb]

great analysis as usual @quietvoid ... I need to try to understand your vs-nlq script (assuming that's what you used to check FEL)...

Couldn’t have said it better. @quietvoid doing gods work over here

[quietvoid]

It seems the Koch Media Lamb release might not play in Dolby Vision normally: https://github.com/justdan96/tsMuxer/is ... 1120210769

[RESET_9999]

@RESET_9999 Hi quick question, so using your scripts its not possible to convert DV P8/7 to P5? Is that because of the different colorspace?

thanks

Well, you can force any DV profile (wrong one included) with the mp4muxer modes.

[Godmax]

How to add black bars to mkv/m2ts dolby vision video files without losing quality?

[Gatorman]

How to add black bars to mkv/m2ts dolby vision video files without losing quality?

I don't believe there is a way to simply add black bars to an existing file. You would need to encode the file with the correct padding values. Then make sure to edit the DV L5 metadata to account for the black bars. There is always the potential for quality loss from encoding a file already encoded from a full rip.

[kazuma]

so the best udh player voor dolby vision mp4 is the sony ubp-x700? which one you guys recommended? or the LG UBK90?