Dolby Vision now possible through MP4 Mux.

[Manixx2020beyound]

@ quietvoid
L2 meta keep coming out weird.
But on the xml it seem to be correct well (not 100% sure it’s correct.)
What could be the reason for this?
Just curious if u got any insight on this from others ellse were

So far I get a perfect l1DV meta match from resolve min-average-max are all correct
For spares & munsil compare to the original

I don't know, I've mentioned that the L2 doesn't always match in the RPU.
My only test samples are Netflix's encoded streams, and the corresponding CMv2.9 XML.
Sometimes it's fine, sometimes the values are different.

I wonder if the monitor I’m using plays a part, I’ll try & find out.

[cannibalist2]

Could someone give me information about profile 4 vs profile 8?
As far as i know
Profile 4 supports enhancement layer but base layer is SDR compatible
Profile 8 is HDR compatible but doesnt support enhancement layer

My tv is lg g1 and internal plex app can play both profiles (p4 st dl/dt dl and p8 st sl). Why are we focusing on converting FEL movies to profile 8 instead of profile 4? I have made only one movie so far with both profiles and they looked like same to me.

[quietvoid]

My tv is lg g1 and internal plex app can play both profiles (p4 st dl/dt dl and p8 st sl). Why are we focusing on converting FEL movies to profile 8 instead of profile 4? I have made only one movie so far with both profiles and they looked like same to me.

Because you're not actually converting anything when using profile 4, just changing the container.
Profile 4 is not compatible with HDR10 video such as UHD discs.

[staknhalo]

Is profile 5 just dynamic tonemapping metadata in a proprietary color space? So nothing unique in the experience really over a profile 8.1 file (assuming bitrate equal)? Or does profile 5 have specific 12bit color info in it like a profile 7 FEL?

[quietvoid]

Is profile 5 just dynamic tonemapping metadata in a proprietary color space? So nothing unique in the experience really over a profile 8.1 file (assuming bitrate equal)? Or does profile 5 have specific 12bit color info in it like a profile 7 FEL?

Profile 5 includes reshaping metadata and some different flags/values for the color space.
Otherwise the actual dynamic metadata should be the same.

The reshaping process recreates the YCbCr image, with supposedly close to 12 bits equivalent info.

[glc650]

The reshaping process recreates the YCbCr image, with supposedly close to 12 bits equivalent info.

How does that work when only profile 4 and 7 are FEL capable?

[quietvoid]

How does that work when only profile 4 and 7 are FEL capable?

The profile 5 proprietary colorspace is more efficient, see https://en.wikipedia.org/wiki/ICtCp#Characteristics
In reality FEL can also add detail/noise, so they're not the same.

[staknhalo]

Is anyone else here for FEL titles encoding their HDR10 BL to a smaller size and then making p8 with RPU from EL and also remuxing together with EL again for SL p7 FEL (in different files each, duh-doy - not trying to make that all in 1 file or something)? I'm getting random non-constant color/video artifacting in numerous titles after encoding and making both p8 and p7 SL and the artifacts are not there in the encoded BL (not just Handbrake btw, I've tried ffmpeg w/ x265 directly and others as well with the same artifacting results each time essentially, just the artifacts appear in different places/times depending on the encoder). I have things like chromaloc=2 set and stuff, but I know both the BL+EL in p7 work intertwined so to speak and are spit out together as two files at time of source encode w/ DV so I'm wondering if encoding at all afterwards no matter what breaks FEL or if I'm just missing/breaking a specific flag/setting somewhere. MEL only titles are fine after encoding with no artifacting, but they don't have as much going on with complexity so not as much to break. Playback is also obviously fine for FEL if I make the files without encoding the BL. But I also can't burn in forced subtitles then. :/

Code: Select all

 -max_muxing_queue_size 1024 -map 0:0   -c:v libx265 -pix_fmt yuv420p10le    -profile:v main10  -x265-params "level-idc=51:high-tier=1:uhd-bd=1:ref=5:aq-mode=2:repeat-headers=1:strong-intra-smoothing=1:bframes=4:b-adapt=2:frame-threads=0:colorprim=bt2020:transfer=smpte2084:colormatrix=bt2020nc:hdr10_opt=1:master-display=G(13250,34500)B(7500,3000)R(34000,16000)WP(15635,16450)L(10000000,1):max-cll=0,0:hdr10=1:chromaloc=2:pass=1:no-slow-firstpass=1" -b:v 44808k -preset:v medium   -an -sn -dn -f mp4 NUL 

[RESET_9999]

No issue on my end with x265.exe (staxrip GUI)

Code: Select all

 x265.exe --crf 14 --preset slower --profile main10 --level-idc 5.1 --output-depth 10 --vbv-bufsize 160000 --vbv-maxrate 160000 --master-display "G(8500,39850)B(6550,2300)R(35400,14600)WP(15635,16450)L(10000000,50)" --hdr10 --colorprim bt2020 --colormatrix bt2020nc --transfer smpte2084 --range limited --max-luma 1023 --max-cll "1232,278" --hdr10-opt --dolby-vision-profile 8.1 --dolby-vision-rpu X:\RPU.metadata.bin --repeat-headers --hrd --aud --no-open-gop  --deblock -3:-3 --no-sao --chromaloc 2

[staknhalo]

I'mma try again with x265 keeping it real simple

Code: Select all

--pass 1 --bitrate 44808 --output-depth 10 --profile main10 --level-idc 5.1 --high-tier --ref 5 --master-display "G(13250,34500)B(7500,3000)R(34000,16000)WP(15635,16450)L(10000000,1)" --hdr10 --colorprim bt2020 --colormatrix bt2020nc --transfer smpte2084 --range limited --chromaloc 2 --repeat-headers --aud --hrd --stats

I wasn't doing the DV insertion at time of encode like you are, because I was trying to make a p7 mux and p8 from the same HDR10 only base encode, though that shouldn't matter; but I'm in trial and error mode so if this next one doesn't work I'll try that.

[mulucy]

How does that work when only profile 4 and 7 are FEL capable?

The profile 5 proprietary colorspace is more efficient, see https://en.wikipedia.org/wiki/ICtCp#Characteristics
In reality FEL can also add detail/noise, so they're not the same.

Sorry if it was asked before, can your tool convert from Profile 7/8 to Profile 5?

[quietvoid]

Sorry if it was asked before, can your tool convert from Profile 7/8 to Profile 5?

No, that requires processing the video.

[RESET_9999]

Just a FYI...

The x700 and the Zidoo are not processing the RPU correctly when it plays tsmuxer trimmed samples (movie cuts/splits) but somehow decodes FEL correctly.
I know a long time ago, someone here said that he was seeing a difference with its TV internal player and it turned out it was because of the splitting.
viewtopic.php?p=100961#p100961
viewtopic.php?p=101616#p101616

samples...
ST-DL MKV offsync: https://drive.google.com/file/d/1D-zYop ... sp=sharing
ST-DL TS offsync: https://drive.google.com/file/d/1EKyCtx ... sp=sharing
ST-DL MKV original: https://drive.google.com/file/d/1gRBqz7 ... sp=sharing

at the complete end of the sample (58sec) there's a brightness adjustment visible on the C8 and Shield but not on the x700 and the Zidoo.
If I don't split the file but still delay the RPU, then the zidoo and the x700 also have visible brightness changes.

[cannibalist2]

Just a FYI...

The x700 and the Zidoo are not processing the RPU correctly when it plays trimmed samples (movie cuts/splits) but somehow decodes FEL correctly.

Hi @RESET_9999, I will be glad if you answer my question
As you have tested Chromecast with Google TV, do you recommend it for FEL movies? Mostly I convert them to MEL and make profile 6 DV and watch it with webos plex app (my tv still supports profile 6). They look really nice but I don't know how much quality I sacrifice for converting from FEL to MEL. Is buying chromecast for only FEL movies really worth it or is there no significant diference between MEL and FEL? I wanted to know because almost all technological products are expensive in my country.

[RESET_9999]

Hi @RESET_9999, I will be glad if you answer my question
As you have tested Chromecast with Google TV, do you recommend it for FEL movies? Mostly I convert them to MEL and make profile 6 DV and watch it with webos plex app (my tv still supports profile 6). They look really nice but I don't know how much quality I sacrifice for converting from FEL to MEL. Is buying chromecast for only FEL movies really worth it or is there no signicifant diference between MEL and FEL? I wanted to know because almost all technological products are expensive in my country.

Well if don't care about not having lossless audio, then yes the Chromecast is a good mediaplayer for FEL DV mkv but one problem: with my LG C8, I'm only getting LLDV which is very strange because I know this device can do tv-led DV but somehow output lldv by default.

Honestly, I used to think that there was a big difference between FEL and MEL but after comparing a lot more movies, the difference is very small on our 10bits TVs unless the studio(EG. total recall) did a poor job encoding the base layer. I would probably fail a blind side-by-side comparison test on most movies.

I still prefer to watch FEL DV on my x700 though, just for the peace of mind