Dolby Vision now possible through MP4 Mux.

[redoine322]

that is not how it works, you're just changing the container profile and not the actual RPU metadata profile.
As I said, you can't convert P8/P7 to P5.

Alright ..yeah the different in brightness caused by Plex Thanks RESET_9999

[Godmax]

So what happens if we get a Dolby Vision m2ts with cropped out black bars and they become grey on an Oppo 203 for example. Any way to fix this with tsmuxer or makemkv or sth?

[ArArdin]

Code: Select all

Video

HDR format                               : Dolby Vision, Version 1.0, dvhe.05.06, BL+EL+RPU, HDR10 compatible / SMPTE ST 2086

Very weird to see P5 with an enhancement layer.

[stn17]

Heyo, seeing C9 owners use p7 FEL in .m2ts container instead of .mp4

Any reason for it?
I already have my algorithm perfected:
Rip BL, EL_RPU, THD, .mov Subtitles
eac3to to delete THD atmos extension if they are present
THD to eac3 with channel remapping
if DTSHDMA instead of THD, then straight into the ffmpeg to 1536k eac3 5.1
subtitles into SubtitleEdit to turn it into .srt
BL + EL + EC3 go into mp4muxer, .srt file next to it with .eng added for plex to recognize it

Any reason to use other tools? whats the upside/downside?

[Mattl0]

Anyone tried the 5.0 fw from Ugoos on am6 b? Wonder how’s the dv playback. I will test it when I have time (currently the unit is somewhere, need to find it lol) .

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[D34DL1N3R]

Want to convert DV mkv profile 5 to MP4 using DoVi Scripts 1.2.1+tools.

I choose:

MODE.M4= MP4_muxer(p5/P8/P7)
and then
3) MODE.3= Demuxer (p5, p8, p7)

However, 3) asks for an mp4 file to demux instead of an mkv. If I try with the mkv I get this error:
Stream map '0:2' matches no streams.
To ignore this, add a trailing '?' to the map.

Is it possible to fix or someone to make a DOVi Tools script to demux mkv to create dv mp4?

[mattmarsden]

Anyone tried the 5.0 fw from Ugoos on am6 b? Wonder how’s the dv playback. I will test it when I have time (currently the unit is somewhere, need to find it lol) .

F9220A1F-B95D-4B07-83FB-19CFD5159257.pngC8E9B873-8502-4BDF-B4FD-3602ACEBADDC.pngA594274E-B3FB-4A57-91F1-051FBD0A3621.jpeg

Do you know where I can download the firmware from?

[RESET_9999]

Want to convert DV mkv profile 5 to MP4 using DoVi Scripts 1.2.1+tools.

yes the demuxer in the mp4 mode is just for mp4 files.
You can demux your mkv with mkvextract and then use Mode.M4 --- > MODE.1 ---> Workflow.1
https://sourceforge.net/projects/gmkvextractgui/

[knuffi123]

that is not how it works, you're just changing the container profile and not the actual RPU metadata profile.
As I said, you can't convert P8/P7 to P5.

Can you please explain this a bit further so I understand the background. So when I take DV m2ts file from a UHD BD and convert it to a MKV with MKVtoolnix, then merge the dual layer DV tonsingle layer with makeMKV, what do I get as a result? Is that a faulty profile 5 with incorrect color space?

Thank you!

[RESET_9999]

So when I take DV m2ts file from a UHD BD and convert it to a MKV with MKVtoolnix, then merge the dual layer DV tonsingle layer with makeMKV, what do I get as a result?

you get a lossless single-track dual-layer profile 7 files.

look at the end of this excel sheet, all the profiles are explained:
https://docs.google.com/spreadsheets/d/ ... sp=sharing

[drew_nickel]

@reset_9999
or to anyone else who would be kind enough to answer a few questions that I have in regards to dual layer FEL

1.) Is the reason the FEL layer file size is so much bigger than the MEL version because the FEL contains 12bits of color data, which has exponentially more color data than the 10bit MEL version?

2.) If the mediainfo for a certain movie says this about the FEL layer:
MPEG-H HEVC Video 7564 kbps (10.95%) 1080p / 23.976 fps / 16:9 / Main 10 @ Level 5.1 @ High / 4:2:0 / 10 bits / 1000nits / Dolby Vision FEL / BT.2020
Doesnt it mean the FEL is basically pointless since it was Mastered in 1000nits and 10bit?

3.) I have a CX (700-800 nits max). Since my display wont even go over 1000 nits (no where even close to 4,000 or 10,000) would I benefit at all from having a DV player capable of playing Dual layer FEL? or would the player basically output the same thing as the single layer MEL version?

thanks!

[RESET_9999]

1- FEL data is the difference between the 12bits master and the 10bits encode.
It can contain extra details/grain especially noticeable with movies poorly encoded like Total Recall See: https://slow.pics/c/dgibQoJ1

2- Regardless of how bright the movie was graded, DV appears to look always different than HDR10 on my LG C8. Better tone mapping I guess.

3- Unless they messed up the HDR10 encode, the difference between FEL and MEL is very small and probably unnoticeable most of the time on our 10bits TVs. But it does feel good to know you're getting the best quality possible .

[nekno]

Just to expand on this a little.

1.) Is the reason the FEL layer file size is so much bigger than the MEL version because the FEL contains 12bits of color data, which has exponentially more color data than the 10bit MEL version?

When dealing with DV Profile 7, you have a Base Layer and an Enhancement Layer.

A 12-bit 4K master is graded and then analyzed by DV software and processed into a 10-bit 4K HDR10 base layer, a 10-bit 1080p enhancement layer, and the Reference Processing Units (RPUs) containing dynamic metadata — characteristics of the brightness from scene to scene and the tone mapping trims for different display capabilities.

The EL contains the residual video signal that's the difference between the 12-bit master and the HDR10 BL.

An FEL contains the full 1080p video stream with the residual video data plus the RPUs.

An MEL has the video data stripped out; it has a null video stream or mid-gray static field, and is just used to carry the RPUs. Or, as I understand it, if there was only a 10-bit master produced there may have never been the extra 2 bits of color data available, so there was no video data the FEL needed to carry.

2.) If the mediainfo for a certain movie says this about the FEL layer:
MPEG-H HEVC Video 7564 kbps (10.95%) 1080p / 23.976 fps / 16:9 / Main 10 @ Level 5.1 @ High / 4:2:0 / 10 bits / 1000nits / Dolby Vision FEL / BT.2020
Doesnt it mean the FEL is basically pointless since it was Mastered in 1000nits and 10bit?

The FEL just contains the 2-bits of diff between a 12-bit master and 10-bit BL. It's recombined with the BL in a proprietary DV process to recreate a 12-bit 2160p signal from a 10-bit 4K BL + a 10-bit 1080p EL, so you don't need to worry about the video specs too much. The EL video stream isn't be displayed directly, so the specs aren't really relevant. It's using 10-bits of color @ 1080p resolution to represent 2-bits of color @ 2160p resolution. They used a proprietary hack to stuff the 2-bits of data they needed into an existing video format, 10-bit 1080p HEVC video.

3.) I have a CX (700-800 nits max). Since my display wont even go over 1000 nits (no where even close to 4,000 or 10,000) would I benefit at all from having a DV player capable of playing Dual layer FEL? or would the player basically output the same thing as the single layer MEL version?

The RPU contains trim data — adjustments for different brightness displays — often for 100nits (SDR) and 600nits. When your device's EDID indicates an 800nit max, the 100nit and 600nit trims are used to produce a picture that's as close as possible to the 10000nit or 4000nit or 1000nit master.

That will be true with either an MEL or FEL.

And it's true that the 2bits of color data in an FEL usually mostly represent brightness beyond your display's capabilities.

So in a lot of cases the FEL will contain data brighter than your display can presently handle and it isn't that useful, but in other cases (as shown in the Total Recall snapshots) the FEL video data actually adds more clarity and detail because of the way the data was split apart in the encoding process.

So MEL and FEL encodings are both capable of exceeding the capabilities of most displays, but if you want to be sure you're getting the best possible video quality, you go with the FEL. Without analyzing the contents of a specific FEL video stream, or seeing it rendered with the BL+EL combined, you won't really know what you're missing.

[Mattl0]

Anyone tried the 5.0 fw from Ugoos on am6 b? Wonder how’s the dv playback. I will test it when I have time (currently the unit is somewhere, need to find it lol) .

F9220A1F-B95D-4B07-83FB-19CFD5159257.pngC8E9B873-8502-4BDF-B4FD-3602ACEBADDC.pngA594274E-B3FB-4A57-91F1-051FBD0A3621.jpeg

Do you know where I can download the firmware from?

Sorry , no, that was only a news from Ugoos . It it not out yet

[RESET_9999]

great explanation @nekno
I'll pin your comment in the excel sheet. thanks