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Re: Dolby Vision now possible through MP4 Mux.
Posted: Tue May 24, 2022 5:26 am
by rophel
Using Reset_9999's scripts and had some questions:
How accurate is the conversion of HDR10plus to DV? Anything I can do to improve the conversion? I don't have an HDR10+ display to compare.
Also, sometimes I end up with both an .hevc and a .bin file when using the script, etc. Do I need to do anything with the .bin or just mux the .hevc into a mkv? I'm not losing anything by discarding the .bin, correct? S
Re: Dolby Vision now possible through MP4 Mux.
Posted: Tue May 24, 2022 6:21 am
by NiCE77
@quietvoid:
I also created mp4 and ts versions of your test files:
https://1drv.ms/u/s!Ahh4FiB9hIuT-ETf93f ... D?e=nOgBuQ
Is it possible that the Apple TV could only read the RPU from the mov container? How can I make a mov file?
Re: Dolby Vision now possible through MP4 Mux.
Posted: Tue May 24, 2022 12:17 pm
by quietvoid
Not sure. ffmpeg isn't keeping the Dolby Vision config when converting to mov. Only mp4.
Re: Dolby Vision now possible through MP4 Mux.
Posted: Tue May 24, 2022 10:56 pm
by RESET_9999
rophel wrote: Tue May 24, 2022 5:26 am
Using Reset_9999's scripts and had some questions:
How accurate is the conversion of HDR10plus to DV? Anything I can do to improve the conversion? I don't have an HDR10+ display to compare.
Also, sometimes I end up with both an .hevc and a .bin file when using the script, etc. Do I need to do anything with the .bin or just mux the .hevc into a mkv? I'm not losing anything by discarding the .bin, correct? S
nop, you cannot improve the conversion. it's the best you can get with the input source you have.
rophel wrote: Tue May 24, 2022 5:26 am
Also, sometimes I end up with both an .hevc and a .bin file when using the script, etc. Do I need to do anything with the .bin or just mux the .hevc into a mkv? I'm not losing anything by discarding the .bin, correct? S
you can delete the .bin file.
I keep a copy because I want to share the rpu with my friends.
Re: Dolby Vision now possible through MP4 Mux.
Posted: Tue May 24, 2022 11:44 pm
by rkjnsn
For movies with neither a Dolby Vision track nor HDR10+ metadata to convert, how much of a difference am I likely to notice on an LG C1 between auto-generating shot-by-shot metadata versus just playing it back with static metadata? Is it more likely to make a difference in a brighter room (so Dolby Vision IQ can do its thing) than a fully dark room?
Finally, is there any way to generate shot-by-shot metadata on Linux, or do I have to use the madMeasureHDR.exe program under Windows?
Thanks.
Re: Dolby Vision now possible through MP4 Mux.
Posted: Tue May 24, 2022 11:57 pm
by Manixx2020beyound
I just made a profile 5 doblyvision encode (now-possible) encoded on a pc
This test was made from a hdr10 base layer.
And it works on apple
tv
I’ll wait for reset9999 to compare
- BE470269-B01B-4DDD-8390-DACFC8FC4F8D.png (3.31 MiB) Viewed 16960 times
Re: Dolby Vision now possible through MP4 Mux.
Posted: Wed May 25, 2022 12:12 am
by RESET_9999
rkjnsn wrote: Tue May 24, 2022 11:44 pm
For movies with neither a Dolby Vision track nor HDR10+ metadata to convert, how much of a difference am I likely to notice on an LG C1 between auto-generating shot-by-shot metadata versus just playing it back with static metadata? Is it more likely to make a difference in a brighter room (so Dolby Vision IQ can do its thing) than a fully dark room?
Finally, is there any way to generate shot-by-shot metadata on Linux, or do I have to use the madMeasureHDR.exe program under Windows?
Thanks.
HDR10 with madvr-generated DV is certainly better than just static HDR10. You will notice a difference, especially with bright content.
I dont know about Linux.
Re: Dolby Vision now possible through MP4 Mux.
Posted: Wed May 25, 2022 3:05 am
by Manixx2020beyound
Manixx2020beyound wrote: Tue May 24, 2022 11:57 pm
I just made a profile 5 doblyvision encode (now-possible) encoded on a pc
This test was made from a hdr10 base layer.
And it works on apple
tv
I’ll wait for reset9999 to compare
My p5 are triggering doblyvision on the pc app. This is unbelievable
BE470269-B01B-4DDD-8390-DACFC8FC4F8D.png
Re: Dolby Vision now possible through MP4 Mux.
Posted: Wed May 25, 2022 3:24 am
by rophel
@RESET_9999 Thanks for the quick reply!
Another issue (and I've spent time searching the forum via Google so sorry if this has been covered):
When I do WEB-DL only hybrids i.e. both DV and HDR are from WEB-DLs, with most films I get audio that is wildly out of sync. TV shows have no issues, strangely. Source files are MKVs, I use the hybrid maker script, then mux the resulting hevc file with the HDR file's audio and subs using mkvtoolnix gui.
I saw some mention of trying better release groups, but has anyone had any success in resolving this? I am using two files from the same release group and confirm exact same length via jumping to specific frames, etc.
I tried some various things, using TSMuxer to turn the end MKV into a TS seemed to get the audio only a second or so off...while the MKV was WILDLY off. So odd.
Re: Dolby Vision now possible through MP4 Mux.
Posted: Wed May 25, 2022 7:51 am
by Manixx2020beyound
Here is a p5 sample for u guys to test
This was encoded using doblyvision encoding engine & h265, RPU is a true P5 even l4 included
Source file spares & munsil m2ts untouched Mel.
Test on Apple TV’s
https://drive.google.com/file/d/1476mVd ... sp=sharing
Re: Dolby Vision now possible through MP4 Mux.
Posted: Wed May 25, 2022 9:52 am
by NiCE77
Thanks, I will try tonight. Maybe you could make a mov file from the recently linked P8.4 L2 test file?
Re: Dolby Vision now possible through MP4 Mux.
Posted: Wed May 25, 2022 1:27 pm
by ragico
Thank you. Tested on ATV 4k works perfectly via Infuse but no audio.
Also for a couple of secs woksr on plex app before a message appears on the screen, plex complaining the network speed is too low (it is wired gigabit).
Re: Dolby Vision now possible through MP4 Mux.
Posted: Wed May 25, 2022 2:29 pm
by RESET_9999
Except that it is not a true P7/P8 to P5 conversion. It is newly generated metadata and all the artistic trims are gone. Basically the same as generating DV from madvr.
In order to get the same DV, the dovi_tool would need to be able to convert RPU to XML (same structure as resolve XML). Then we could import the metadata in resolve and encode it to P5.
Will be useful to convert all my HDR10 patterns to Profile 5 though.
Re: Dolby Vision now possible through MP4 Mux.
Posted: Wed May 25, 2022 3:14 pm
by stn17
rkjnsn wrote: Tue May 24, 2022 11:44 pm
For movies with neither a Dolby Vision track nor HDR10+ metadata to convert, how much of a difference am I likely to notice on an LG C1 between auto-generating shot-by-shot metadata versus just playing it back with static metadata? Is it more likely to make a difference in a brighter room (so Dolby Vision IQ can do its thing) than a fully dark room?
It would heavily depend on a file.
Not everybody fills full static metadata, some are using incorrect metadata that ruins tone mapping for OLED tvs without good DTM (LG)
For example, iTunes, ATV and Disney content (including disks) contains MaxCLL value way above what you can actually see in the actual movie. And if it goes above your TV's maximum brightness it will skew the EOTF target and increase brightness roll off. So 500 nits image will be presented in 350 nits. Warner brothers does the same stupid shit, when their logo is about 900 nits bright and the entire movie is 150-200 nits MaxFALL.
Famously, new Spider-Man has MaxCLL of 10000 nits even though it was graded on Sony OLED with maximum brightness of 1000 nits. It also scales up MaxFALL value so it messess up all the tone mapping in the film. Thankfully most of those fucked up movies come with Dolby Vision.
Now in this particular example, if the movie is only available in HDR10 (like Batman v Superman) MadVR DV would help alot as it will allow your TV work to its best potential and it will exclude that one 10000 nits frame from everything else in the content.
Re: Dolby Vision now possible through MP4 Mux.
Posted: Wed May 25, 2022 4:08 pm
by Manixx2020beyound
RESET_9999 wrote: Wed May 25, 2022 2:29 pm
Except that it is not a true P7/P8 to P5 conversion. It is newly generated metadata and all the artistic trims are gone. Basically the same as generating DV from madvr.
In order to get the same DV, the dovi_tool would need to be able to convert RPU to XML (same structure as resolve XML). Then we could import the metadata in resolve and encode it to P5.
Will be useful to convert all my HDR10 patterns to Profile 5 though.
Also a p5 encoded from a master MxF that already has been made with Dolbyvision meta retains all the artistic intent in the conversion to p5 tested that as well.
Yep Rpu to xml would put the icing on the cake..
tv