search

Asd-g / avslibplacebo

AviSynth+ libplacebo.
GNU General Public License v3.0
25 stars 2 forks source link

Tone-mapping target output color space and gamma #8

Closed nicko88 closed 1 year ago

nicko88 commented 1 year ago

Is there a possibility to allow targeting BT.2020 and different gamma curves (i.e 2.2 and 2.4) for HDR to SDR tone-mapping?

My displays support wider color than BT.709, like DCI-P3 and are calibrated to the BT.2020 color space, but they do not support HDR, or have poor HDR support. They are also usually calibrated to either 2.2 gamma or 2.4 gamma.

This is a common thing in projectors for tone-mapping systems like madVR, or a Lumagen video processor box and is often called SDR.2020, where we convert HDR10 PQ to BT.2020 Gamma 2.2 for example.

Asd-g commented 1 year ago

You can try the latest version (1.4.1) - libplacebo_Tonemap(..., dst_prim=6, dst_trc=x, dst_sys=4).

nicko88 commented 1 year ago

Awesome! Thank you for adding all the destination gamuts and tone reproduction curves.

This makes the filter much more flexible!