Dolby Vision on PC. Technically impossible or a matter of time? - Page 2

Balling · 15th February 2022, 16:35

Mpv works perfectly.

sarsaK · 29th March 2022, 13:47

I wonder if there is a compilation that works with mpv on linux (ubuntu) with D.V (vp=gpu-next), or the one that displays D.V sdr

Balling · 16th June 2022, 10:58

We need to get NLQ and EL merging implemented first. Then we can try sending 422 12 bit stream in low latency dolby vision using nvapi from nvidia (hope we did not do a bug like all blu-ray players did).
This does NLQ intital parsing, but the merging of EL and NLQ stuff should be done (https://github.com/quietvoid/vs-nlq).
https://patchwork.ffmpeg.org/project...op0@gmail.com/

Rozin · 23rd June 2022, 12:57

I have legion 5 pro and it is dolby vision licensed (even though display panel is LCD tech). It does netflix dolby (which is streaming) fine. But My question is, is it supposed to decode profile 5 DoVi files(local on disk)?. I tried a profile 5 file and it decodes in purple&green hues..

dbezerra · 19th September 2022, 15:58

There are more than a few titles where the BL is poorly implemented leaving chroma and other issues to be fixed as part of the FEL layer. Total Recall is a good example.

Is there any way to merge the FEL improvements into the BL so players that ignore the FEL layer could still use the improved BL? I think this is what https://github.com/erazortt/DoViBaker is proposing, but I am not 100% sure.

Balling · 20th December 2022, 08:06

Quote:

Originally Posted by dbezerra

There are more than a few titles where the BL is poorly implemented leaving chroma and other issues to be fixed as part of the FEL layer. Total Recall is a good example.

Is there any way to merge the FEL improvements into the BL so players that ignore the FEL layer could still use the improved BL? I think this is what https://github.com/erazortt/DoViBaker is proposing, but I am not 100% sure.

DoviBaker works great. Still metadata, artistic and dynamic is not done yet.

dbezerra · 22nd December 2022, 19:52

Quote:

Originally Posted by Balling

DoviBaker works great. Still metadata, artistic and dynamic is not done yet.

THanks. I played with DoViBaker a bit. But my understanding is that it requires you to re-encode each title into a new BL. It's time consuming and depending on the parameters used in the re-encoding, one could end up messing up with the picture again.

I still dream for a solution that will handle that during playback. Just like the regular 4K disk players can do and also a few streamers, like CCwGTV.

Balling · 23rd December 2022, 08:15

Quote:

Originally Posted by dbezerra

THanks. I played with DoViBaker a bit. But my understanding is that it requires you to re-encode each title into a new BL. It's time consuming and depending on the parameters used in the re-encoding, one could end up messing up with the picture again.

I still dream for a solution that will handle that during playback. Just like the regular 4K disk players can do and also a few streamers, like CCwGTV.

Reencode into lossless 12 bit AVIF. Not a problem. And besides the point is to decode directly to display.

dbezerra · 23rd December 2022, 16:45

Quote:

Originally Posted by Balling

Reencode into lossless 12 bit AVIF. Not a problem. And besides the point is to decode directly to display.

Would you mind to share the command line you use for lossless re-encoding?

Thanks

Balling · 9th August 2023, 17:05

A nice patch for CRC32 verification https://patchwork.ffmpeg.org/project...t/?series=9494

New version https://patchwork.ffmpeg.org/project...t/?series=9496

16th June 2022, 10:58	#23 \| Link
Balling Registered User Join Date: Feb 2020 Posts: 541	We need to get NLQ and EL merging implemented first. Then we can try sending 422 12 bit stream in low latency dolby vision using nvapi from nvidia (hope we did not do a bug like all blu-ray players did). This does NLQ intital parsing, but the merging of EL and NLQ stuff should be done (https://github.com/quietvoid/vs-nlq). https://patchwork.ffmpeg.org/project...op0@gmail.com/ Last edited by Balling; 16th June 2022 at 11:01.

19th September 2022, 15:58	#25 \| Link
dbezerra Registered User Join Date: May 2009 Posts: 33	Merge FEL into BL? There are more than a few titles where the BL is poorly implemented leaving chroma and other issues to be fixed as part of the FEL layer. Total Recall is a good example. Is there any way to merge the FEL improvements into the BL so players that ignore the FEL layer could still use the improved BL? I think this is what https://github.com/erazortt/DoViBaker is proposing, but I am not 100% sure.

9th August 2023, 17:05	#30 \| Link
Balling Registered User Join Date: Feb 2020 Posts: 541	A nice patch for CRC32 verification https://patchwork.ffmpeg.org/project...t/?series=9494 New version https://patchwork.ffmpeg.org/project...t/?series=9496 Last edited by Balling; 26th August 2023 at 03:11.

15th February 2022, 16:35	#21 \| Link
Balling Registered User Join Date: Feb 2020 Posts: 541	Mpv works perfectly.

29th March 2022, 13:47	#22 \| Link
sarsaK Registered User Join Date: Aug 2020 Location: Turkey Posts: 19	I wonder if there is a compilation that works with mpv on linux (ubuntu) with D.V (vp=gpu-next), or the one that displays D.V sdr

23rd June 2022, 12:57	#24 \| Link
Rozin Registered User Join Date: Oct 2020 Posts: 6	I have legion 5 pro and it is dolby vision licensed (even though display panel is LCD tech). It does netflix dolby (which is streaming) fine. But My question is, is it supposed to decode profile 5 DoVi files(local on disk)?. I tried a profile 5 file and it decodes in purple&green hues..