Dynamic conversion of HDR10+ SEI to DV P8 NAL

[cpm]

I also vaguely recall seeing a Dolby VSVDB with DM 5, I think that may have been a TCL.
Points to it being a later version of DV - maybe the ugoos with 4.9 kernel is too old and has a defect working with it.

With Player Led (HDR) basically your TV is out of the loop on DV only element it is providing is its Dolby VSVDB (via the EDID), the TV then being sent an effective DV-LL signal as HDR (it is the same video data in both cases).

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So… next up would be to build an alternative Dolby VSVDB with values appropriate for your display.
In order to do that it is best to extract the EDID and decode it to get the Dolby VSVDB, then use the UI to build a Dolby VSVDB with ~same min max luminance and colour.

Take a look at this post and the thread to save the EDID etc:

EDID Override - Injecting a Dolby VSVDB Block

It needs your EDID as a base, the first tool is for both Mac and PC so should be good if you did not know , it is not hard - better to teach how to fish Do you have the original spreadsheet that png was taken from? Would be useful to have. Steps required: Make sure the Ugoos is connected in your normal setup, projector, receiver etc. without your LLDV converter device. ssh into the Ugoos ssh needs to be enabled for CoreELEC via the settings use terminal on mac to access the u…

Edit:
@GWBD1
If the above is a bit too much to take in just enable Dolby VSVDB in the menu and create one with basic settings and try see if any better first before refining.