www.makemkv.com

mtotheb wrote: ↑

Wed May 04, 2022 4:07 pm

I've also never seen a commercial uhd bluray being encoded with x265:

Writing library : x265 3.4+31-6722fce1f:[Mac OS X][clang 11.0.0][64 bit] 10bit

Found this site a while back claiming x264 compliance testing by Criterion, and Warner BD discs encoded with x264, so if true, I guess not a big surprise that x265 would be used in commercial UHD BDs.

More surprising might be doing the encoding on that Mac they had in the editing bay...

mattmarsden wrote: ↑

Mon Apr 25, 2022 12:57 pm

Mattl0 wrote: ↑

Sat Apr 23, 2022 5:04 pm

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) .

F9220A1F-B95D-4B07-83FB-19CFD5159257.pngC8E9B873-8502-4BDF-B4FD-3602ACEBADDC.pngA594274E-B3FB-4A57-91F1-051FBD0A3621.jpeg

Do you know where I can download the firmware from?

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

Mattl0 wrote: ↑

Thu May 05, 2022 9:26 am

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.

quietvoid wrote: ↑

Wed May 04, 2022 8:56 pm

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?

Not sure but it still sounds like an oddity.

RESET_9999 wrote: ↑

Wed May 04, 2022 4:26 pm

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.

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

@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

ArArdin wrote: ↑

Thu May 05, 2022 9:54 am

Mattl0 wrote: ↑

Thu May 05, 2022 9:26 am

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 : )>

Mattl0 wrote: ↑

Fri May 06, 2022 11:07 pm

Your am6 plus will work with that fw : )>

Thanks, Mattl0

RESET_9999 wrote: ↑

Fri May 06, 2022 2:47 pm

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

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

andy22 wrote: ↑

Fri May 06, 2022 9:55 pm

@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.

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

Godmax wrote: ↑

Sat May 07, 2022 8:44 pm

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.