Automatic LUT switch based on both input and SDR/HDR state

[chcore]

We currently have "lut_lin_tables.3d", "lut_lin_tables_hdr.3d" and "lut_lin_tables_dv.3d" for SDR, HDR and DV and switch between them when the TV changes its HDR/SDR state.

Would it also be possible to have support for something like "lut_lin_tables_hdmi1.3d" or "lut_lin_tables_hdr_hdmi4.3d"? Something that takes the current input into account, as different sources are likely to have different types of content, with different image properties and even different image processing settings.

A LUT that is calibrated for an Apple TV on HDMI-1 might not produce accurate colors when applied to a PC connection on HDMI-3, for example. @sundermann

[sundermann]

I doubt this would be useful for most users. If you want to propose something I am happy to review it but for now I don't see a need for it. You can use the alternative dump location to grab the image before the scaler meaning that no image processing has been applied at that stage.

[chcore]

You can use the alternative dump location to grab the image before the scaler meaning that no image processing has been applied at that stage.

I am already using the alternative dump location, but find there to be a fairly large difference between frames sent with differing picture settings/modes.

Here is one from a linux machine used to play video content, and a windows machine used to play games (both SDR).

I doubt this would be useful for most users. If you want to propose something I am happy to review it but for now I don't see a need for it.

That might be true. I am not a developer so am not able to implement this myself, but disabling HDR switching in the grabber and manually setting the LUT and HDR mode in HyperHDR using its API is a good enough workaround for now. Please close this issue if you feel it is appropriate.