Converting DV Profile 5 to HDR

[Ab2774]

I am trying to encode an H265 Profile 5 video into a normal HDR output that I can later inject the DV metadata into as Profile 8.1 (encoding to ProRes, then encoding it back to H265 is also okay for me).

When I use the "ENCODE_DoVi_P5" command in dovi_scripts, the process fails, and I keep getting this error:

[avisynth @ 00000285d9792dc0] libplacebo_Tonemap: [fatal] Failed creating instance: VK_ERROR_INCOMPATIBLE_DRIVER
[fatal] Failed initializing vulkan instance
[fatal] Failed initializing vulkan device
(Y:\temp.folder76\script.avs, line 6) script.avs contains this LoadPlugin("C:\DoVi.Scripts\tools\FFMS2\ffms2.dll")  
LoadPlugin("C:\DoVi.Scripts\tools\avs_libplacebo.dll")  
LoadPlugin("C:\DoVi.Scripts\tools\avsresize_r21\x64\Release\avsresize.dll")  
FFVideoSource("Y:\input_p5.mkv", cachefile="Y:\temp.folder76\indexed.video.ffindex") 
ConvertBits(16) 
libplacebo_Tonemap(src_csp=3, dst_csp=1) 
z_ConvertFormat(pixel_type="YUV420P10",colorspace_op="2020ncl:st2084:2020:full=>2020ncl:st2084:2020:limited",dither_type="error_diffusion",chromaloc_op="left=>top_left")

I think the Vulkan functions do not work, and the result is repeated filter failures and no output file. (probably because I'm running Windows on a virtual machine, as I don't have a Windows PC or laptop at the moment).

I want to ask if there is an alternative path I can take to achieve this. Thanks

[R3S3t9999]

No alternative that I'm aware of.

[Ab2774]

I see, thanks for letting me know. But just to confirm, is the purpose of the "ENCODE_DoVi_P5" option is to encode a profile 5 video into another profile 5 video? Or is it to make the video into an HDR video that can be injected with the same RPU later on? If it's just re-encoding without changing the profile type, do you think it's possible to convert a profile 5 video to HDR? I've searched online but it's not really documented, probably because no one has really tried to do it or even thought about it.

[R3S3t9999]

There are3 workflows that can encode P5...

Workflow 8-2-1: Can encode profile 5 to HDR10 with P8 DV metadata. No need to inject after the encode, the script does it on the fly while encoding to hevc with x265.exe or nvenc.exe. Require Vulkan support

Workflow 8-2-2: Can encode profile 5 to SDR. Require Vulkan support

Workflow 8-2-6: Can encode profile 5 to profile 5. Require Dolby Encoding Engine software and Vulkan support.

[R3S3t9999]

of course, the script workflow 2-3 has been able to do that for a while. I was the first to do the CMV4.0 restoration, like a year ago.
https://www.youtube.com/watch?v=RI_e-MPIPlw
https://docs.google.com/spreadsheets/d/15i0a84uiBtWiHZ5CXZZ7wygLFXwYOd84/edit?gid=828864432#gid=828864432

[Ab2774]

I didn't know that, that's very impressive, great skills you have.

[Ab2774]

Hi there again, I have another question if you don't mind. So I currently watch all my DV content on my MacBook Pro, which supports profiles 5 and 8 only. But since I'm planning to buy the UGOOS AM6B+ in the near future, I want an efficient solution to store a single file of any content, being able to watch it natively in DV now, and eventually being able to watch it in P7 FEL soon. My idea is to inject a Profile 8 RPU sourced from the streaming version of the same title (after confirming that the grading and mastering are identical) to enjoy it in DV on my laptop for the time being, but also extract and keep the untouched Profile 7 RPU. So that when I finally get to watch the same content in P7, I can just remove the Profile 8 RPU and inject the original Profile 7 RPU back into the untouched base layer for a clean remux.

My question: Is this the cleanest and most future-proof approach for this use case, or is there a better way you'd recommend?

Thanks

[R3S3t9999]

You have to keep the DV hevc layer as well, not just the P7 RPU. Workflow 2-2 to demux the layers.

You reconstruct the P7 rip with workflow 4-2, but I think you will have to remove the P8 RPU from the base layer first so:

1- run your P8 rip in 2-2 to get a clean BL (delete the P8 layer)
2- run BL.hevc and EL.hevc in 4-2 to reconstruct the P7 rip
3- mux ST-DL hevc from 4-2 with audio in mkvtoolnix.

[Ab2774]

Thanks a lot for your response. Cheers.