Will check later in my day, thanks for this.
Had a quick look as it’s very late here. That file tests a lot of features and I saw changes with offset, gain, chroma but not with saturation.
This is on a Philips 808.
Apparently this proves cmv4 but not tvled?
I backup your MKV to MEGA, please download it here
Thanks @Kaan.
If your 808 can do CM 4 it maybe correct, only on a CM 2.9 TV would you expect not to see as not capable of processing the extra L8 trims.
I found this doc from Autodesk FLAME on using DV trims:
Gives a good layman readable overview of the trims and the version differences CM 2.9 v CM 4
Of note: Saturation - is listed as a CM 4 only control - confusingly there is “Saturation Gain” in both CM 2.9 and CM 4.
More details on CM 2.9 and CM 4 from Dolby:
https://professionalsupport.dolby.com/s/article/Dolby-Vision-Metadata-Levels?language=en_US
“When creating v4.0 content, v2.9 metadata (L2) will be generated automatically and inserted in the XML along with the 4.0 metadata (when using the latest backwards L2FromL8 algorithm).”
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Thx，@portisch
Hi all, what version do I need to test CM4.0 on? 20.5 or do I need another version?
Hi,
You need 20.4 ng-dv from here Release 20.4-Nexus · CoreELEC/CoreELEC (github.com)
And then apply an update containing @cpm’s changes. Dolby Vision for Minix U22X-J (Max) and Ugoos AM6+ - #317 by cpm
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Evaluating and comparing picture/display quality on non-calibrated displays is imho completely pointless.
On LG Oled TVs “Cinema Home” should be calibrated to DV and “Cinema” to HDR. Since these two are different standards, it’s natural that they will reproduce different picture if not displayed accordingly.
So running:
L8 100-600nits Trims P8 4-steps TEST (881 nits).mp4
On my LG E8, I get absolutely no discernible change to the image for all trim tests.
Evidence is mounting we may be onto something 
@DMDreview - thanks for joining to test, looking forward to your input.
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If we get cast iron proof that the video priority is allowing the RPU to be passed and processed on the display end (tv-led), then the below is my take on what was going on with fake tv-led at least for this device:
graphics priority is meant to be for HDVM and for other Java based graphics etc on BluRay players, Can think of it like computer graphics - the device is controlling the drawing and making graphics which it wants to control on the 2 OSD planes, and not have those images pulled around by the image processing (rpu processing etc.) on the video plane.
At the same time we are asking the device to be tv-led so tunnel the data with rpu data.
It is then doing the best it can to process the rpu on the video plane itself, then blend with the two OSD planes and sending out - it does not want the rpu processing on the tv / display side distorting the graphics so removes/nulls out that data so nothing is processed that side.
if my take is right fake tv-led was just graphics priority mode all along doing it’s best.
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I’m in the market to get a DV/DA capable device for CE and MINIX based product is my first choice. I was going through this post to understand the where NEO U22-XJ Max stands atm in terms of Dolby Vision, HDR10+, Dolby Atmos, DTS-X etc. but got totally lost in the 370 posts. So a very quick question from me: Is it okay to go for U22-XJ Max or better to look for some other device?
Thanks for sharing.
I get the same results as @Kaan,
Tv is Panasonic LZ1500 55" oled year 2022.
I also tested on a Apple TV 2023 via Infuse (latest beta) and had same results .
is am6b+ with ce still fake tv-led?
I am going to try to test this on my LG CX when I get a minute… Am I correct in assuming CE updates need to be turned off after applying your build or the changes to parameters/code you made will be overwritten with the 20.5 upgrade?
I personally did, as it immediately downloaded 20.5.
I can kind of see why Amlogic coded/worded the driver in this way. IIRC, when I was looking to upgrade back in 2020, LLDV was at one point somehow touted as better because it’s “low latency”. Yet by now we all know “low latency” for 24 FPS, non-interactive video with fixed audio (i.e. no mic, no real-time audio input), with proper AV syncing is absolutely useless to have. i.e. it’s not a video game.
I know DMDReview has made some fantastic YT videos explaining all about DV, especially the videos about fake TV-led and how he was able to detect the RPU in the video signal itself being blanked out for it, vs proper TV-led for something like the Nvidia Shield. Glad to have him in the loop!
yea but it’s a before / after comparison (pre and post patch) so still valid. maybe less accurate, but still a valid comparison since we’re not evaluating for color accuracy here, but how the RPUs are treated.
there’s a enormous difference in the 2x settings pre and post patch.
also never heard of anybody calibrating that way, can you post more docs?
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yeah, I follow DMDreview for a while now on youtube. He is an absolut pro in dv testing. I hope together we can work things out and can finally find a really good solution.
I think this is just part of their marketing, because the A95L cam late last year and they will not have an A95M this year. I’m sure they will have a flagship OLED in 2025 again.
Right now the DV integration seems buggy on the A95L. Maybe you heard of it.
The similar result can be achieved on S22-XJ Max?
I don’t have that box in hand right now but getting one very soon.