Dolby Vision now possible through MP4 Mux.

[RESET_9999]

@Stacey usually responds to users questions here: https://forum.blu-ray.com/showthread.ph ... 27&page=41

Awesome, thank you ! I’ll read the 50 or so pages & post there. Tons of info, I’ve found two posts by Stacey that may be relevant to that test pattern, ATV & clipping (unsure if it’s about SDR only)
1. https://forum.blu-ray.com/showpost.php? ... tcount=878
2. https://forum.blu-ray.com/showpost.php? ... count=1224

yeah the 2nd link is about the green push in SDR. HDR does not have this problem

[aboulfad]

yeah the 2nd link is about the green push in SDR. HDR does not have this problem

Thanks for confirming, reading more & more just confirms to me as a noob there’s so much more to learn & try. I want to buy that UHD disc but unsure how many DV patterns there are that could be useful to me.

I re-watched some videos from HDTVtest about the first ATV 4K DV comparison between iTunes streaming (P5) & UHD BD (Oppo), the differences were very minor. Maybe in the end, it (UHD MEL to P8/ATV) doesn’t matter, oc what no one can agree or find info on is the color mode/space differences from UHD P7 to P8 to whatever the ATV is doing internally.

One thing I’ve learned is that DoVi is just a whole pile of mess ; - )

[jlpsvk]

so...does the latest atv4k 2022 play dovi p8 correctly from mkv in plex client? or still as fake dovi?

[RESET_9999]

Plex still does fake DV but with Infuse, P8 MKV, and TS works (with lossless audio being decoded as lpcm audio and you can access your plex server with infuse). The picture quality is better than on the Shield from the quick tests I did but I want to do a full comparison soon. It doesn't support cmv4.0 files though, they play as HDR10.

EDIT: example: https://slow.pics/c/41eRbGZ4

[jlpsvk]

thanks reset... so i will stick with Plex on my OLED Android TV for now.

[LV8HD]

Hi y'all, I would like to generate a custom HDR10+ layer for a movie with Davinci Resolve, but a doubt came to my mind. The movie is in fact a FEL movie, and since it expands the brightness of the BL what would be the most correct way to generate the custom HDR layer?

1. Measuring only the BL
2. Baking FEL and BL together to create a HDR10 video and measuring

[RESET_9999]

I would like to generate a custom HDR10+ layer for a movie with Davinci Resolve
1. Measuring only the BL
2. Baking FEL and BL together to create a HDR10 video and measuring

1. Measuring only the BL

[Iam2smart]

For movies that have a MDL mismatch like The Avengers would you recommend editing L6 or just leaving it alone. Thanks

[RESET_9999]

it doesnt really matter, both are ok

[Iam2smart]

Ill just leave it be then Thanks for the Reply

[onlysleeping23]

So I’ve been ripping discs in my collection, adding audio tracks, then remuxing back to usb flash drives in bdmv format for chapter support, only retaining the main feature for playback on my x800m2.

Following directions for option 2 of the x800m2 in the dolby vision stuff sheet, and using tsmuxer nightly in order to keep dolby vision, I notice if I remux the playlist file to bdmv, mediainfo shows two streams, neither listing dv.

If I remux the m2ts file, I now see dv in mediainfo, as expected.

If I then remux the new m2ts back to bdmv, mediainfo no longer shows dolby vision.

Am I doing something wrong? Should I only remux to m2ts to keep dolby vision, and manually place it in the bdmv structure?

Would really appreciate any advice/help!

[RESET_9999]

@onlysleeping23 it's normal and look at an original DV BD folder , you'll see that it's the same.

[chronomac]

I think I know the answer to this but wanted confirmation anyway.

I ripped John Wick 4 and then, with DoVi_Scripts, plotted HDR10 and DV L1:




As you can see, DV has a higher MaxCLL by about ~400 nits. Is that why it's included here in this spreadsheet that shows DV grades that expand brightness?

[Iam2smart]

I think I know the answer to this but wanted confirmation anyway.

I ripped John Wick 4 and then, with DoVi_Scripts, plotted HDR10 and DV L1:




As you can see, DV has a higher MaxCLL by about ~400 nits. Is that why it's included here in this spreadsheet that shows DV grades that expand brightness?

Yes that's FEL so if it were to be convert to profile 8 which would not contain FEL it would be the incorrect brightness

[thirdmoon]

@RESET_9999
Elemental 2023 4K BD

Image 1 - https://i.imgur.com/iuIWek1.png - Legacy Algo - Default Scaling
Image 2 - https://i.imgur.com/psmVkU8.png - Legacy Algo - 1080p custom scaling
Image 3 - https://i.imgur.com/OsCMDHZ.png - Most Highlight New Algo - Default Scaling
Image 4 - https://i.imgur.com/HL8crVV.png - Most Highlight New Algo - 1080p custom scaling

I'm confused which one to prefer. The new algo L1 seems to cut all highlights, in this case.