www.makemkv.com

DjObama wrote: ↑

Fri Nov 03, 2023 8:13 pm

Flac will be much smaller in size than LPCM, so less bandwidth used when plaing. Sometimes DV UHD movies stutter (nothing major, like 1-2 times per viewing) for me when played from external HDD, I suppose with flac it would be happening less. Especially if you'd add the option to convert to 16 bit flac instead of 24 bit. I think 16 is plenty enough. Dts-hd ma converted to 16 bit flac often take 1/4th of its original size, often less than DD+ @1,5mbps. And compared to eac3 flac is still a lossless file format = piece of mind for us audio- and vision nerds

RESET_9999 wrote: ↑

Sat Nov 04, 2023 12:08 pm

DjObama wrote: ↑

Fri Nov 03, 2023 8:13 pm

Flac will be much smaller in size than LPCM, so less bandwidth used when plaing. Sometimes DV UHD movies stutter (nothing major, like 1-2 times per viewing) for me when played from external HDD, I suppose with flac it would be happening less. Especially if you'd add the option to convert to 16 bit flac instead of 24 bit. I think 16 is plenty enough. Dts-hd ma converted to 16 bit flac often take 1/4th of its original size, often less than DD+ @1,5mbps. And compared to eac3 flac is still a lossless file format = piece of mind for us audio- and vision nerds

Which playback device do you use? I just tried on my C2 and there's no direct play for FLAC/PCM, all I got was PLEX converting to DDP7.1 which is identical to my script.

RESET_9999 wrote: ↑

Sat Oct 14, 2023 1:35 pm

Trees wrote: ↑

Sat Oct 14, 2023 8:41 am

Quick question; when generating CMv4.0 content (3-1), how does one determine what Mastering Display to use? I assuming higher isn't necessarily better?

2 options:

1- just use the static metadata from your source HDR10
2- check the brightness first with madvr. If 95% of the movie is under 1000nits, use 1000nits MDL else, 4000.

Option 2 is better because some movies have a static MDL of 4000nits but the actual brightness is under 1000nits.
A 4000nits RPU is a lot darker than a 1000nits one regardless of the content's actual brightness and in my opinion, 4000nits MDL + low nits content is wrong without L2 trim passes because if you look at the generated(or original) trims with a 4000nits analysis, they brighten/compensate a lot for the darkness a 4000 rpu brings.

https://slow.pics/c/uVX5iFOD

ans40 wrote: ↑

Sat Nov 04, 2023 7:35 pm

RESET_9999 wrote: ↑

Sat Oct 14, 2023 1:35 pm

Trees wrote: ↑

Sat Oct 14, 2023 8:41 am

Quick question; when generating CMv4.0 content (3-1), how does one determine what Mastering Display to use? I assuming higher isn't necessarily better?

2 options:

1- just use the static metadata from your source HDR10
2- check the brightness first with madvr. If 95% of the movie is under 1000nits, use 1000nits MDL else, 4000.

Option 2 is better because some movies have a static MDL of 4000nits but the actual brightness is under 1000nits.
A 4000nits RPU is a lot darker than a 1000nits one regardless of the content's actual brightness and in my opinion, 4000nits MDL + low nits content is wrong without L2 trim passes because if you look at the generated(or original) trims with a 4000nits analysis, they brighten/compensate a lot for the darkness a 4000 rpu brings.

https://slow.pics/c/uVX5iFOD

Hey @Reset_9999, I've hit a wall with a movie (Predators 2010) whose BL MDL is 1000nits, but measuring the BL shows most the MaxCLL over 1000 nits. I've tried fiddling with different settings (changing the DV Mastering Display and color space transforming mainly) in Resolve, but can't figure out how to generate a DV that doesn't cut off at 1000 nits. Any thoughts? https://slow.pics/c/BqRCdoHJ

ans40 wrote: ↑

Sat Nov 04, 2023 7:35 pm

Hey @Reset_9999, I've hit a wall with a movie (Predators 2010) whose BL MDL is 1000nits, but measuring the BL shows most the MaxCLL over 1000 nits. I've tried fiddling with different settings (changing the DV Mastering Display and color space transforming mainly) in Resolve, but can't figure out how to generate a DV that doesn't cut off at 1000 nits. Any thoughts? https://slow.pics/c/BqRCdoHJ

Mattl0 wrote: ↑

Sat Nov 04, 2023 7:37 pm

I believe here is a good place to ask.

What is the highest apl scene you have seen on a hdr movie? I mean with real data.

Thanks

DjObama wrote: ↑

Sat Nov 04, 2023 1:10 pm

LG B8. Flac works

thirdmoon wrote: ↑

Mon Nov 06, 2023 3:07 pm

My previous try for SDR to HDR was too dark. After a lot of trial and error, I have come up with this.

Children of Men 2006 - 1080p to 4K HDR (First 10mins)
https://drive.google.com/drive/folders/ ... sp=sharing

simonhazel00 wrote: ↑

Mon Nov 06, 2023 3:15 pm

hello I've done some testing for dolby vision on devices for you reset.

toshiba 55UA3D63DB:

it supports profile 5, profile 8.1 in mp4 and mkv.

it playes the p7 fel st-dl and DT-Dl test clips and shows the text, brightness changes, but not the colours strobing and dolby vision isn't triggered either in ts or mp4.

the ts st-dl fel test track didn't show the brightness change, the strobing or the text and didn't show the dv logo

dune hd homatics box 4k plus:
unsure if this box has the fake TV led dolby vision issue however.

source led mode:
profile 7 fel
st-dl ts & mp4:
brightness change, strobing and text appeared correctly and triggered dv
DT-Dl ts:
brightness change, text appeared and dv triggered (no colour strobe)
DT-Dl mp4:
brightness change, colour strobing, text and dv logo

profile 8.1 works correctly in mp4 and mkv
profile 5 works correctly in mp4

player led mode:
profile 7 fel:
st-dl ts:
brightness change, colour strobing, text and dv logo
DT-Dl ts:
text and dv logo
st-dl and dt-dl mp4 :
brightness change, colour strobing, text and dv logo

profile 5 works in mp4 and 8.1 works correctly in mp4 and mkv.

unfortunately my TV doesn't have the hidden menu to look any further then that.