Dolby Vision now possible through MP4 Mux.

[pete19]

It’s also possible to produce a HDR/rgb4816bit.png for comparison as well from a LLDV not converted to SDR. Comparison results are the same for sdr/hdr where the shield is concerned. (Ffmpeg to take screenshots)
Without the vertex 2 altering video playback
Once u have the HDR10/rgb48.png
U can view in your hdr/sdr software eg Madvr. In which u can now take another sdr.png if u so desire.

could you share the cmd to take a LLDV HDR screenshot via ffmpeg ?

[agneva]

I also have a TV
LG OLED55B6V.

For the movie The Lord of the Rings.
Which Dolby Vision profile is best suited for my TV? 5, 7, 8 or 8.1

Thanks in advance.

On my OLED77CX9LA i took dvdfap mp4 with DV SL -> perfect, because EL is empty.
I understood that you can every movie make a mp4 which has an empty EL (called MEL).

"Saving Private Ryan" doesn´t work correct with DV SL,the brightness pumps
I´ll try it this week on the UBK90 with DV DL
It has a FEL.

I don´t know a player how can play mkv with DV DL.

[pete19]

@jcdr428:

I used latest tsmuxer w64-nightly-2020-11-17--01-21-46 and muxed the first 3 mins of a UHD DV disc folder rip to a BMV folder and a m2ts file. Selected the BL + EL, Dolby Atmos audio and then muxed.

When playing back on LG CX via Oppo, DV and Dolby Atmos are triggered correctly on both muxed versions, but the muxed versions are always a little bit darker than the original disc.

Is this a known limitation or is there a setting that I'm missing ?

I took screenshot comparisons and also switched the order of the versions when played back to ensure it's not the LG dimming. Every time the muxed versions are a little bit darker.

Looking at mediainfo, the only difference I can see is in the HDR FORMAT tag of the EL of the m2ts mux:

original disc:
HDR format : SMPTE ST 2086, HDR10 compatible

muxed BDM folder
HDR format : SMPTE ST 2086, HDR10 compatible

muxed m2ts
HDR format : Dolby Vision, Version 1.0, dvhe.07.06, EL+RPU, Blu-ray compatible / SMPTE ST 2086, HDR10 compatible

see screenshot comparison here: https://screenshotcomparison.com/comparison/8739

(ignore blown out highlights, this is a camera setting issue)


Thx

I just tested a full movie remux (not just a 3 mins trim) via tsmuxer of LOTR UHD HDR Disc 1, and there is no brightness change in full tv-led DV of these remuxes - so it seems the trim introduced the brightness loss.

[RESET_9999]

could you share the cmd to take a LLDV HDR screenshot via ffmpeg ?

by time in second:

Code: Select all

ffmpeg.exe -ss 3200 -i X:\video.mkv -vframes 1 X:\transfer=hdr.png

by frame number:

Code: Select all

ffmpeg.exe -i X:\video.mkv -vf select='eq(n\,6672)' -vframes 1 X:\transfer=hdr.png

[TickTock]

The subtitles going out of sync in Apocalypse Now Final Cut was caused by the file being damaged, eac3to log:

[v01] [0:28:24] The source file seems to be damaged (sync byte missing). <WARNING>
[a03] [0:28:23] The source file seems to be damaged (sync byte missing). <WARNING>
[a04] [0:28:24] The source file seems to be damaged (sync byte missing). <WARNING>
[s05] [0:24:01] The source file seems to be damaged (sync byte missing). <WARNING>
[s06] [0:27:55] The source file seems to be damaged (sync byte missing). <WARNING>
[s07] [0:24:01] The source file seems to be damaged (sync byte missing). <WARNING>
[s08] [0:24:01] The source file seems to be damaged (sync byte missing). <WARNING>
[v01] [0:28:24] The source file seems to be damaged (discontinuity). <WARNING>
[a04] [0:28:24] The source file seems to be damaged (discontinuity). <WARNING>
[a03] [0:28:23] The source file seems to be damaged (discontinuity). <WARNING>
[a03] This track is not clean (2). <WARNING>
[a04] This track is not clean. <WARNING>
[s05] [0:24:01] The source file seems to be damaged (discontinuity). <WARNING>
[s07] [0:24:01] The source file seems to be damaged (discontinuity). <WARNING>
[s06] [0:27:55] The source file seems to be damaged (discontinuity). <WARNING>
[s08] [0:24:01] The source file seems to be damaged (discontinuity). <WARNING>
[a03] Audio has a gap of 3744ms at playtime 0:28:27. <WARNING>
[a03] The audio gaps/overlaps can't be removed from the TrueHD bitstream. <WARNING>
[a03] In order to remove them you'll have to transcode to another format. <WARNING>
[a04] Audio has a gap of 3776ms at playtime 0:28:27. <WARNING>

I tested a new version and it played perfectly on the X700 with subtitles on.

[Psnjerry]

i use dvdfab to make the dolby vision movies and i heard that it produces a fake dolby vision

i have a sample i made and if someone can test it against the method everyone uses in this forum.

thats if you have back to the future part 1 lol

https://mega.nz/file/NYgknYSa#aiz7hO8WT ... rAas_crLgo

[Psnjerry]

i use dvdfab to make the dolby vision movies and i heard that it produces a fake dolby vision

i have a sample i made and if someone can test it against the method everyone uses in this forum.

thats if you have back to the future part 1 lol

https://mega.nz/file/NYgknYSa#aiz7hO8WT ... rAas_crLgo

i figured out how you guys are doing it lol. so easy. guess ill be testing myself.

[Psnjerry]

i use dvdfab to make the dolby vision movies and i heard that it produces a fake dolby vision

i have a sample i made and if someone can test it against the method everyone uses in this forum.

thats if you have back to the future part 1 lol

https://mega.nz/file/NYgknYSa#aiz7hO8WT ... rAas_crLgo

i figured out how you guys are doing it lol. so easy. guess ill be testing myself.

i seem to get the same results when i use mp4muxer and dvdfab. using dvdfab to make one stream causes it to have crushed blacks. 2 video streams work

[shawnc22]

i use dvdfab to make the dolby vision movies and i heard that it produces a fake dolby vision

i have a sample i made and if someone can test it against the method everyone uses in this forum.

thats if you have back to the future part 1 lol

https://mega.nz/file/NYgknYSa#aiz7hO8WT ... rAas_crLgo

i figured out how you guys are doing it lol. so easy. guess ill be testing myself.

i seem to get the same results with yusesope tools and dvdfab when i make mp4 into a 2 stream to play on c9 default app, making a one stream gives you crushed blacks.

don't use yusecope's tools or dvdfab when making mp4s for c9 playback, use mp4muxer.

[Psnjerry]

i figured out how you guys are doing it lol. so easy. guess ill be testing myself.

i seem to get the same results with yusesope tools and dvdfab when i make mp4 into a 2 stream to play on c9 default app, making a one stream gives you crushed blacks.

don't use yusecope's tools or dvdfab when making mp4s for c9 playback, use mp4muxer.

i meant mp4muxer. it looks the same to me but why you say i shouldn't use dvdfab?

[pete19]

could you share the cmd to take a LLDV HDR screenshot via ffmpeg ?

by time in second:

Code: Select all

ffmpeg.exe -ss 3200 -i X:\video.mkv -vframes 1 X:\transfer=hdr.png

by frame number:

Code: Select all

ffmpeg.exe -i X:\video.mkv -vf select='eq(n\,6672)' -vframes 1 X:\transfer=hdr.png

thanks. so how do you convert the png file to SDR ? ffmpeg as well or madvr ? can you share your process ?

[RESET_9999]

thanks. so how do you convert the png file to SDR ? ffmpeg as well or madvr ? can you share your process ?

I use madVR because I consider it the best HDR to SDR tone mapping but it probably can be done with ffmpeg. I don't know how though.
So just open the png in MPC-BE/HC/madVR. it needs ''transfer=hdr'' in the filename.

[shawnc22]

i seem to get the same results with yusesope tools and dvdfab when i make mp4 into a 2 stream to play on c9 default app, making a one stream gives you crushed blacks.

don't use yusecope's tools or dvdfab when making mp4s for c9 playback, use mp4muxer.

i meant mp4muxer. it looks the same to me but why you say i shouldn't use dvdfab?

Unless something changed, I believe DVDFAB strips away the EL in their DV MP4 conversion. You can verify this with mediainfo if you see only one video track that's labeled BL+RPU.

[agneva]

Unless something changed, I believe DVDFAB strips away the EL in their DV MP4 conversion. You can verify this with mediainfo if you see only one video track that's labeled BL+RPU.

you can set it in dvdfap:

image_24338.png (6.83 KiB) Viewed 20333 times

if you choose EL+RPU than you get it:

22.png (56.26 KiB) Viewed 20333 times

i just tested it with Saving Private Ryan, it has an FEL.

If I choose DV Single Layer for playback on my LG CX9 i get brightness pumping.
If I choose DV Dual Layer, the CX9 doesn´t play, but the LG UBK90 plays it correct.

I think all movies with empty EL (MEL) can be ripped in DV SL.

https://forum.blu-ray.com/showthread.ph ... st12116287

[RESET_9999]

I think all movies with empty EL (MEL) can be ripped in DV SL.

https://forum.blu-ray.com/showthread.ph ... st12116287

I think so, I don't see any difference between BL+RPU(profile 8 ) vs dual-track dual-layer MEL(profile 7) on my Sony x700
plus the MEL movies can also be re-encoded. Thank's to @quietvoid rpu extractor.

If I choose DV Single Layer for playback on my LG CX9 i get brightness pumping.

did you try with profile 8 ? i think DVDFAB still produces profile 5 file which is incorrect for HDR10 BL.