Dolby Vision now possible through MP4 Mux.

[RESET_9999]

Where i can download dovi scripts 2.0.6 beta?

[anta777]

Thank you very much!

[ans40]

I'm a bit confused since in your updated video on how to generate Dolby Vision and HDR10+ via Davinci Resolve you explicitly mentioned that L2 trims must be removed in order to achieve the most "natural" and near-creator-intended look possible. What has changed?

I knew this question would come up haha... I did more test about the trims and it turns out, that all the trims in cmv2.9(100-600-1000) are generated from the manual L8 100nits trim and if no L8 trims were done by the colorist, the cmv2.9 trims are 100% generated.

Trying to understand the final verdict on this. Since we don't have the colorist to determine if overriding the generated L2 trims is appropriate, isn't the best option to still remove the trims? Or are you saying that leaving them in there seems okay since colorists often end up keeping the generated trims anyways? To keep or not to keep -- thoughts? thanks

[RESET_9999]

Trying to understand the final verdict on this. Since we don't have the colorist to determine if overriding the generated L2 trims is appropriate, isn't the best option to still remove the trims? Or are you saying that leaving them in there seems okay since colorists often end up keeping the generated trims anyways? To keep or not to keep -- thoughts? thanks

well, it's up to your preference but cmv2.9 + L1/L2 generated trims most of the times looks closer to cmv4.0 L1/L3 tone mapping and a lot of colorists seem to be ok with generated trims for the cmv2.9 bluray delivery.
One thing is for sure, they rarely do 600 and 1000nits trim and they only do a 100nits L8 trim and any adjustment will be reflected in the generated cmv2.9 trims bloc at three levels (100/600/1000). A cmv4.0 workflow is more aggressive and seems to be designed to never clip unless you change the L1 tunning. Old cmv2.9 workflow without doing trims can look brighter but can clip.

Now that I have access to the trims control in Resolve, I did an example of how the level 2 trims get updated through L8 100nits: https://www.youtube.com/watch?v=15HTaR0hRvI

[lexyz]

Ok more info about this. It seems that this is another LLDV bug because I just tried a 1600nits edid (sony A95) in TV-LED and the trims are working with the 1000nits rpu test file.
This bug(l2 ignored) also affects the devices (chromecast/ firetv) that do fake TV-LED. Also present on the latest ATV in LLDV.

Hi, RESET!
Does Ugoos AMB+ have the same LLDV bug?
If it does then probably worth sticking with a CE build that supports a custom DV block in EDID.

[RESET_9999]

Hi, RESET!
Does Ugoos AMB+ have the same LLDV bug?
If it does then probably worth sticking with a CE build that supports a custom DV block in EDID.

I don't know, I did not try LLDV and after years of testing, I can finally enjoy a device that does everything right(tv-led) so I don't feel like testing devices anything anymore.
I think there's a cheap splitter ( Ezcoo) that will let you upload custom edid, so that might be an option if you don't want to buy the very expensive hdfury device.

[magnetoeric]

I finally purchased Ugoos device after reading all the feedback from this thread. The picture in dolby vision movies was much brighter than my shield pro. Looks like it's well worth the puchase

[sofakng]

If I understand correctly, the three best devices are the following:

UGOOS AM6B plus
UGOOS AM6 plus
Minix u22x-j max

Is this correct? What's the difference between them and is there any recommendation for the one best option?

[texwatson]

All pretty much the same, the AMB6 Plus probably has wifi 6 and the non plus doesn't. What matters is that they all have the amlogic s922xj soc. The AMB6 Plus probably has the largest community but the cheapest one you find, is the best option.

[MartyMcNuts]

Has anyone tried the AM8 Pro with the Amlogic S928X-J soc? Does this play DV P7 MEL/FEL mkv files via NAS streaming? Is it possible to dual boot and use CoreElec or LibreElec?

[anta777]

@RESET_9999

Why DV5 better DV8 ?

True:
DV5 brightness 0-1023 chroma 0-1023
DV8 brightness 64-940 chroma 64-960

DV5=1,15*DV8 video bitrate.

Netflix DV5 video bitrate 17,5 Mbit.

Because DV8 videobitrate >20,125 Mbit better than DV5.

[RESET_9999]

Why DV5 better DV8 ?

it uses a more efficient colorspace.

https://youtu.be/DcN6a57DYAc?t=799

[ArArdin]

I wonder if saying P5 is better over P8 just by comparing specs and bitrates is a real-world thing. Maybe it's more fair to express "better" in terms of perception of delivered quality. P5's full range and use of proprietary colorspace carrying potential, one still has to wait & see how bad/well this potential is used on delivery. Streaming services have horribly proofed themselves to - and still do - deliver terrible quality (and not only in DoVi) on a regular base. For this sake of lower bandwith they still simply often compress video too much. I have done some dovibaker x265 HDR encodings from disc-sourced material which quality obliterates that of any P5 stream of same video. Just saying. P8, MEL (and even FEL) are no guarantee to provide with a "better" picture of course, but in my viewing experience overall Dolby Vision quality on - or derived from - disc still rules. And not by a bit.

[RESET_9999]

yeah I agree. Streaming services have horrible encoding quality most of the time, especially itunes and Amazon. It's never just about the bitrate, the encode settings matter big time.

[texwatson]

Has anyone tried the AM8 Pro with the Amlogic S928X-J soc? Does this play DV P7 MEL/FEL mkv files via NAS streaming? Is it possible to dual boot and use CoreElec or LibreElec?

It's been tried. No Coreelec yet and no DV P7.