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Help on rip of DV UHD into MKV (without any compression)

Posted: Thu Apr 20, 2023 12:39 pm
by clenfant
Hi,

Quite new into this, I'm currently starting to rip all my bluray collection.
I already have a NAS, and using Kodi on a ShieldTV to read from it on a TV Compatible with Dolby Vision.
I did tryied to read downloaded MKV files with DV UHD content, without any issue, DV is recognized from the TV and correctly displayed.

My issue is when I want to rip my own 4K DV bluray (mission impossible 6 for example).

So I am ripping the entire disk with makeMKV, then, still using makeMKV, I'm loaded the index.bdmw file, and use it to generate a MKV file with only the movie track, main audio track and subtitles.
I'm not re-encoding anything, I want to keep it that way, full quality.

But doing so, I can't get the DolbyVision to be recognized.

I have read lot of topics from this forum, but most of the time, this is about to re-encode the MKV keeping the DV info, but this is not what I want/need, as I don't re-encode.

Any clarification/help would be more than welcome :)

Re: Help on rip of DV UHD into MKV (without any compression)

Posted: Fri Apr 21, 2023 2:19 am
by dcoke22
Dolby Vision has a concept of 'profiles'. UHD's have profile 7 DV. If you stream something from Netflix with Dolby Vision, that's profile 5. As far as I'm aware, none of the streaming boxes, including your Nvidia Shield, can play profile 7 DV from a .mkv file. (The previous statement is a an oversimplification, but is generally the case.)

When you read about people transforming a ripped UHD with DV into something else, part of that transformation is getting the DV profile into a form that their playback system can handle. They also may or may not be transcoding the video to save some space. Any DV content you've downloaded is undoubtedly NOT a profile 7 DV straight from a UHD rip.

Re: Help on rip of DV UHD into MKV (without any compression)

Posted: Fri Apr 21, 2023 8:20 am
by clenfant
ok, thanks, it becoming more clear for me.
So I need to find a way to transform the profile 7 DV into something else (profil 5 maybe), without re-encoding the content itself ?

Re: Help on rip of DV UHD into MKV (without any compression)

Posted: Fri Apr 21, 2023 11:21 pm
by dcoke22
Lots of people ask this question… Here are some other threads:

The giant DV thread. Start at the end and work backwards. RESET_9999 and quietvoid really know a lot about it. Check RESET's signature.
Dolby Vision now possible through MP4 Mux.

Cannot get Dolby Vision

Dolby Vision x265 Encoding, DV Profile Advantages/Caveats?

Converting UHD BD dvhe.07 to dvhe.08 with dovi_tool

Re: Help on rip of DV UHD into MKV (without any compression)

Posted: Sun Apr 23, 2023 8:38 am
by clenfant
Thanks or your help.
I already start to revert read the big DV thread, but without the background knowledge it was impossible to understand.
It's becoming clearer (a little) now :)

In the meantime, if it can be relevant to someone, I tried to go with dvdfab software, and generate MKV and MP4 files.
Even if I choose the template dedicated to DV movie, I didn't get any MKV to trigger the DV on my TV.
I did succeed with MP4, but the result is a dark and greensih picture, don't know why or if I did something wrong.

Rgds
Clenfant

Re: Help on rip of DV UHD into MKV (without any compression)

Posted: Sun Jan 28, 2024 7:28 pm
by knilch
Use DoVi Tools to convert profile 7 to profile 8 and get rid of the Enhancement Layer as there is no TV that can handle 12 bit video. This process results in a video track with HDR10 Base Layer + RPU. Fire TV and Shiels TV can playback this with DV or HDR depending on the user's preference and hardware. See the github page of the DoVi project for examples.