2025-03-07, 07:26 AM
> I did a compare to plex transcoding - plex is brighter, almost the same as original sdr videos.
Plex's implementation is worse actually and I have compared that. Preserve brightness and losing details and contrast is not always ideal. Plex also applies a very heavy desaturation filter which alters the original color a lot in bright scenes. If you prefer that kind of behavior you choose a simpler tone mapper like mobius or reinhard, which preserves brightness more than the default bt.2390 EETF. The output brightness controlling won't affect the output like the way you think because you will end up with a lot of washed out color.
If you enabled Intel VPP or Apple VideoToolbox native tone mapping, you need to disable them to use our customized shader tone mapper, or those customizations will not have any effect, as those two a vendor-provided tone mappers after all.
Plex's implementation is worse actually and I have compared that. Preserve brightness and losing details and contrast is not always ideal. Plex also applies a very heavy desaturation filter which alters the original color a lot in bright scenes. If you prefer that kind of behavior you choose a simpler tone mapper like mobius or reinhard, which preserves brightness more than the default bt.2390 EETF. The output brightness controlling won't affect the output like the way you think because you will end up with a lot of washed out color.
If you enabled Intel VPP or Apple VideoToolbox native tone mapping, you need to disable them to use our customized shader tone mapper, or those customizations will not have any effect, as those two a vendor-provided tone mappers after all.