2018-05-16, 06:26
I found out that DvDFab V3 is not same as V5. In V3, HDR works (as you already mentioned without windows slider), even in windows 8.1 it works. Therefore, I guess it is using private NVidia API (similar to madVR). v5, on the other hand, does not auto-change anything (resolution, refresh rate or HDR), and is completely system dependent.
However, for V3 to work properly with HDR, the color has to be 12bit. This is only possible we set "Use Nvidia setting" for color and set color at 12bit. If you select "Use system or default setting", the bit is set to 8bit and I see magenta color everywhere when playing HDR. In my case, the 12bit setting was maintained after reboot in Windows 10 (same driver version as yours). In Windows 8.1, there are no such issues. It's Nvidia color only and setting 12bit was never an issue.
So, I think I will stick with Wijndows 8.1 for now, till DVDFab gets their act together and supports autoswitch (which they have promised on their forum) and supports NVidia private API.
However, for V3 to work properly with HDR, the color has to be 12bit. This is only possible we set "Use Nvidia setting" for color and set color at 12bit. If you select "Use system or default setting", the bit is set to 8bit and I see magenta color everywhere when playing HDR. In my case, the 12bit setting was maintained after reboot in Windows 10 (same driver version as yours). In Windows 8.1, there are no such issues. It's Nvidia color only and setting 12bit was never an issue.
So, I think I will stick with Wijndows 8.1 for now, till DVDFab gets their act together and supports autoswitch (which they have promised on their forum) and supports NVidia private API.
