Dolby Vision now possible through MP4 Mux.

[sw5163]

Yep, LLDV is useless without a custom or original edid with min target 0 and I bet its the same reason why all LG TVs has raised black since their internal config file is not 0.

Is that normal both my Oled G8 and S95Z don't provide Max/Min luminance in the EDID HDR Static Metadata session?

[RESET_9999]

no idea

[sw5163]

If I'm right, it looks like if I want to play video correctly in Movies & TV, I need to either set EDID to 10000nits and let my TV to do the tone mapping. Or disable tone mapping on TV and set EDID to 0-1350nits and let windows do the tone mapping. Since Dolby Vision Extensions is unlikely to work in the former circumstance and I will be also gaming on that TV, I think I'm going to stick to latter.

Is there a way to disable tone mapping in Movies & TV app or energy player with MSFT HW video decoder, and pass through HDR10 metadata? Or do I have to use MPV for passing through HDR10 and switch to MSFT HW video decoder for tone mapping DV content?

[RESET_9999]

Is there a way to disable tone mapping in Movies & TV app or energy player with MSFT HW video decoder, and pass through HDR10 metadata? Or do I have to use MPV for passing through HDR10 and switch to MSFT HW video decoder for tone mapping DV content?

no i think the OS HDR always sends incorrect static HDR10 metadata.

[sw5163]

no i think the OS HDR always sends incorrect static HDR10 metadata.

ok thanks, at this point I think I'm giving up on playing movies on PC.

[ultrahorst]

Just a heads up in case you haven't heard:
Our old and well hated friend the UGOOS AM6+ rises from the dead.

With the latest CoreELEC 20.3 Nexus version, it finally supports proper Dolby Vision FEL decoding with HD audio passthrough. I just installed it on my device (I have the AM6b+), configured audio passthrough, installed Plex Mod 4 Kodi and it just played every MKV Remux with Dolby Vision I tried. No Issues with pausing or skipping.

Source and how-to: https://www.reddit.com/r/PleX/comments/ ... _team_has/
Beware: My device did not boot from the SD card right away, I had to press the "recovery" button on the bottom of the device before powering it on. Then it booted fine - following start directly booted to CoreELEC, no need to press the recovery button again.

[speeddemon]

no i think the OS HDR always sends incorrect static HDR10 metadata.

ok thanks, at this point I think I'm giving up on playing movies on PC.

You could always just migrate over to a madVR setup if you prefer to use a PC.

[speeddemon]

Just a heads up in case you haven't heard:
Our old and well hated friend the UGOOS AM6+ rises from the dead.

With the latest CoreELEC 20.3 Nexus version, it finally supports proper Dolby Vision FEL decoding with HD audio passthrough. I just installed it on my device (I have the AM6b+), configured audio passthrough, installed Plex Mod 4 Kodi and it just played every MKV Remux with Dolby Vision I tried. No Issues with pausing or skipping.

Source and how-to: https://www.reddit.com/r/PleX/comments/ ... _team_has/
Beware: My device did not boot from the SD card right away, I had to press the "recovery" button on the bottom of the device before powering it on. Then it booted fine - following start directly booted to CoreELEC, no need to press the recovery button again.

It still has the following issues, though:
1. Fake TV-led.
2. Natively CMv2.9 so doesn't support Chroma Weight trim without True TV-led.
3. "totally broken in LLDV when the edid is higher than the RPU mastering display".
4. I'm guessing likely inaccurate luminance levels while in LLDV mode (but I don't believe someone has tested this on the AM6b+).

[thirdmoon]

@RESET_9999 I was doing some SDR to HDR conversion. When I exported the DV XML file, it has some L2 and L3 trims. Should I keep those or remove?

https://slow.pics/c/OwpNQjVF

[AndreasT]

Just a heads up in case you haven't heard:
Our old and well hated friend the UGOOS AM6+ rises from the dead.

With the latest CoreELEC 20.3 Nexus version, it finally supports proper Dolby Vision FEL decoding with HD audio passthrough. I just installed it on my device (I have the AM6b+), configured audio passthrough, installed Plex Mod 4 Kodi and it just played every MKV Remux with Dolby Vision I tried. No Issues with pausing or skipping.

Source and how-to: https://www.reddit.com/r/PleX/comments/ ... _team_has/
Beware: My device did not boot from the SD card right away, I had to press the "recovery" button on the bottom of the device before powering it on. Then it booted fine - following start directly booted to CoreELEC, no need to press the recovery button again.

So does it actually apply the EL layer information, or does it just decode and throw it away?

[ultrahorst]

So does it actually apply the EL layer information, or does it just decode and throw it away?

As far as I can tell yes. I tried the usual test files first, where there is a FEL stream from another movie present, I also tried the FEL TEST ST DL P7.mp4 with the "Dolby FEL support" text encoded into the EL. The EL layer is decoded AND displayed.
I'll try watching Saving Private Ryan today - IIRC this showed anomalies when EL layer is discarded.

[dapope]

I doubt it. Was raised on my C8, and it's still raised on my C2.
C8 was worse though and the white balance trick didn't work on my end.

You're right. I just tried the test file on my CX and can see the raised black. It's so slight, I would probably have never noticed outside of test conditions. But good to know, thanks.

[RESET_9999]

@RESET_9999 I was doing some SDR to HDR conversion. When I exported the DV XML file, it has some L2 and L3 trims. Should I keep those or remove?

It's up to you. I prefer removing all the trims as they can have an undesired effect (darken or brighten too much).

made a couple of test files about that:

High peak High average : https://drive.google.com/file/d/1I1c6ob ... drive_link
mid peak high average: https://drive.google.com/file/d/1BaV3Vb ... sp=sharing
high peak low average: https://drive.google.com/file/d/1Za17C- ... drive_link
low peak low average: https://drive.google.com/file/d/1I0CDqL ... drive_link
L2 original vs generated : https://drive.google.com/file/d/1t-T2WT ... drive_link

L1 Tuning vs old algo vs madvr vs hdr10plus comparisons: https://drive.google.com/file/d/1yPXQLp ... drive_link

L3 is not a trim, its an offset to L1 and you should keep it.

You're right. I just tried the test file on my CX and can see the raised black. It's so slight, I would probably have never noticed outside of test conditions. But good to know, thanks.

You can use the white balance trick described in my excel playback sheet to fix it.
On the C8, I noticed it as soon as the screen went full black... WB couldn't fix it, only contrast adjustment did the trick
on the C2, I can notice it when the screen goes full black for at least 2-3 sec or in the ending credits... I use WB RGB -2

There are also ways to fix it when you calibrate but I don't know much about it... @chros could tell you more.

[chros]

There are also ways to fix it when you calibrate but I don't know much about it... @chros could tell you more.

You don't even have to calibrate it, just to have good eyes (or lupe), guide.
I will try out Tmin=0, have you yet?

[RESET_9999]

When trying to grade HDR in DaVinci, the preview looks washed out (I have a 4K HDR monitor).
Is there any way to get a proper preview without any specific hardware?
If not, what is the most budget friendly option?

hey, I know you asked about this a while ago but even though the Resolve manual says only the expensive Decklink cards work, I just got the cheap Decklink 4k mini monitor, and HDR preview works through HDMI.