Dolby Vision Profile 7 & 8 support (.ts/.mkv files)

Video Playback
1950

Try this one: Dolby_Vision_stuff.xlsx - Google Sheets

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1951

if you haven’t taken a look at the .bat file for DoviScripts, it’s thousands of lines, and some of the tools only come in Windows flavour. Having asked elsewhere, the author is not inclined to support porting to macOS. Given the breadth of its functionality, I can imagine it must already have been a massive undertaking to complete it for Windows.

That said, a key part of its functionality is to be able to generate DV metadata for HDR10-only files using the official Dolby CM Analyze tool (the 3-1 workflow in DoviScripts). Since CM Analyze is available for macOS, I am wondering if 3-1 could be built for macOS (I just don’t have the script/tool know-how to do it).

As I understand it, 3-1 does the following:

  • demuxes mkv to an hevc file for downstream processing
  • runs a scene detection analysis with madVR (only available for Windows?)
  • converts the hevc to prores 422
  • CM Analyze takes the prores file and the scene detection file and works its magic to create an RPU
  • RPU injected back in and remuxed with orginal audio etc. Result: CMv4 dv8 file.

At present I have to run this on a Windows machine, but a macOS version would be very nice for those running Macs who also have a keen interest in the 3-1 workflow.

Probably day-dreaming on my part, but it would be very cool to see this for Mac.

1952

Thank you

1953

Ran DV7-DV8 v8.0 on Mac OS for first time.
After it runs Demuxing DV7 EL+RPU HEVC process it returns an error “Invalid PPS Index. Failed to demux EL+RPU file” and quits.

Not sure if this is an issue with the remux .mkv file, or an incorrect config setting I selected.

1954

Maybe try an earlier version?

1955

Oops my bad, I had replaced the original mkv with a more recent release and didn’t think to check the DV version which is already set to 8.1.

1956

Ran version 7.0 of the app against a DV 7.6 mkv file and got the same error invalid PPS index. If anyone can shed some light on what that error means that would be most helpful.

1957

It’s an error from dovi_tool indicating your HEVC stream has been corrupted somehow. dovi_tool couldn’t parse the HEVC stream because a Picture Parameter Set (PPS) element wasn’t as expected.

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1958

Thank you for the link and explanation.

1959

Hi! I’ve been trying to convert some Remux files from Dolby Vision profile 7 to Dolby Vision profile 8.1 with CMv2.9 metadata.
I use the following tool to do the conversion: GitHub - nekno/DV7toDV8: Dolby Vision profile 7 to Dolby Vision profile 8.1 conversion utility for macOS.
I use option -r to remove the CMv4.0 metadata.
If I understand correctly, this should be supported on Infuse on Apple TV 4K (2021).

After converting I get the following profile data from the files:

Video
ID                                       : 1
Format                                   : HEVC
Format/Info                              : High Efficiency Video Coding
Format profile                           : Main 10@L5.1@High
HDR format                               : Dolby Vision, Version 1.0, dvhe.08.06, BL+RPU, HDR10 compatible / SMPTE ST 2086, HDR10 compatible

However, when trying to play the file on Infuse on my ATV, it still says HDR.
When I play the file, my LG G4 does go into Dolby Vision mode, but I think this is some fake DV that is actually HDR10 (I’m not sure though).

This problem is present for all the DV7 files that I converted using this method.

Can somebody point out what I’m doing wrong?
Thanks!

1960 
type or paste code here
1961

So what “says HDR” if your TV goes into DV mode?

What makes you think it’s fake DV?

Is DV on in Infuse? Is your ATV set to 4K SDR with both Match Dynamic Range and Match Frame Rate enabled?

I play DV8 CMv2.9 files on the ATV 4K’21 with CMv4.0 removed by my app all the time and have verified DV can work as intended.

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1962

Hi,

Thanks for your reply.
Dolby Vision is enable in Infuse, and settings are set to 4K SDR with match framerate and dynamic range.

Infuse still shows HDR instead of DV on the Movie info screen:

tempImagekJj9ff
tempImagekJj9ff3024×4032 3.63 MB

The TV still goes into DV mode when starting the movie, so I’m not sure if it’s HDR10 or DV that’s playing. How could I know this for sure?

1963

Just found the answer.
I cleared all metadata from Infuse and now they all show DV.
I think it got confused because the previous version all were profile 7 and it got stuck showing HDR.

Anyways, glad to know DV is working. Thanks for the help!

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