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1 question for HDR, 1 question for libplacebo.
- Although it is not a MPV specific question, but I'm really curious that if there is any video player can fully decode Dolby Vision Profile 7 on PC?
- MPV uses libplacebo now, does it mean MPV is working with VLC development team now?
- player can fully decode Dolby Vision Profile 7 on PC
MEL, everything except dynamic metadata (that means, chroma reshaping, luma reshaping and even MMR).
FEL (no NLQ, no EL merge), no, but there other options: https://github.com/quietvoid/vs-nlq and https://github.com/erazortt/DoViBaker
quietvoid submitted nlq patches of FEL. https://patchwork.ffmpeg.org/project/ffmpeg/list/?series=7164
MPV uses libplacebo now, does it mean MPV is working with VLC development team now?
The opposite, I think, mpv team is working for ffmpeg and videolan now.
The opposite, I think, mpv team is working for ffmpeg and videolan now.
No? libplacebo is essentially haasn's rewrite of mpv's rendering abstraction layer as a separate library, that has since been adopted by VLC.
The opposite, I think, mpv team is working for ffmpeg and videolan now.
The "mpv team" consists of many people, many of whom are not me.
@ZaquL please help with a clarification - does doViBaker merges FEL data with the RPU - in other words, would I take advantage of FEL improvements to poorly authored base layers even on DV players that don't consume FEL as of today?
In my scenario, I need to tonemap/convert HDR to SDR (keeping BT.2020) as I use a JVC projector with ~100 nits. Any advice on what config options I should use? I think I need to set both -target-prim and --target-trc to BT.2020 as my JVC is configured to Gamma 2.4 and BT.2020 when handling the same HDR->SDR scenario with MadVR today.
does doViBaker merges FEL data with the RPU -
How can you merge text, which is what RPU really is, binary XML, with video, that is FEL? No, FEL is merged with BL.
would I take advantage of FEL improvements to poorly authored base layers even on DV players that don't consume FEL as of today?
Well, sure? What is your question? Of course applying FEL will be better.
I need to tonemap/convert HDR to SDR (keeping BT.2020) as I use a JVC projector with ~100 nits.
It will be done automatically if you set --target-trc, since it is trc that defines SDR or HDR it is. Is your projector HW calibrated to P3 or BT.2020? Or SW? I.e. do you have icc profile, for real calibration, HW that is, there is no any ICC profile, 3DLUT is inside the projector itself. In that case, if you are sure it is accepting bt.2020 (in SDR) correctly then you are right --target-prim will do the job. Do not forget to use lastest HEAD of master, there was a recent fix. Gamma 2.4 or BT.1886? It is (VERY) slightly different.
Thanks @ZaquL! It's even better that the FEL is merged wit BL - opens the possibility of also using/comparing with MadVR.
Yes, my projector can handle SDR on BT.2020 - that's how I use it with MadVR today. Will give it a try with MPV.
Cheers
projector can handle SDR on BT.2020
Does it do it by default, I hope not? Do you have to set it like in LG CX override menu?
No, not by default. With the JVC I can select what color space & gamma I want independently of the resolution or SDR/HDR input. So I have profiles (picture modes) for SDR+709 (Blu-rays), SDR2020 (for HDR movies tone mapped to SDR 2020 with MadVR) and regular HDR (for streaming content).
The proposal of DoViBaker is really interesting - because it would allow me to take advantage of FEL for titles that have a really poor authored base layer such as Total Recall by applying the FEL improvements to the Base Layer. I looked again at DoViBaker and it seems I need to compile it and then use it as part of AvSynth (which I also never used...). Ideally this would be integrated with the Dolby Vision tools by Quietvoid... One can dream!