MPC HC and HDR Problem

Hello sometimes happen using mpc video renderer and mpc hc (all from klite codeck pack full) that hdr movie start without no video output (all black) and only sound
also sometimes happen this when vieving the hdr movie and changing mpc from windowed to full screen and viceversa
anyone know that is the cause of this and how can be fixed? thanks

Press Ctrl+J to enable the debug overlay. Make a screenshot. Once for black video problem, and once for working video for same file.

Admin wrote:Press Ctrl+J to enable the debug overlay. Make a screenshot. Once for black video problem, and once for working video for same file.

when happen ctrl j do nothing, the window remain totally black

Which GPU do you have?
Are you doing HDR passthough to the monitor, or tonemapping to SDR?

Admin wrote:Which GPU do you have?
Are you doing HDR passthough to the monitor, or tonemapping to SDR?

4070ti
yes hdr passthough

I have seen reports of similar black screen issues with HDR switch when using madvr. It seems to be a bug in the NVIDIA drivers from the past few months. So you could try a (much) older version of the driver.

Another workaround would be to enable HDR permanently in the Windows settings.