25fps video played at 50Hz is a problem?

[senzaparole]

Hello guys,

I have an LG B9 OLED TV that I also use as a PC monitor. On the desktop I set the fixed frequency to 60Hz.
I use madVR with Mediaportal and MPC-HC. While playing a movie at 50 FPS, in the madVR OSD I display:



display 50.000 HZ
composition rate 50,000 Hz
movie 25,000 fps

It's correct?


In madVR's "display modes" I set 2160p23, 2160p24, 2160p25 and 2160p50.

I add that if I remove 2160p50 from madVR "display modes" it happens that:
- MPC-HC perfectly reads videos at 25 fps. In madVR OSD you can see: Display 25.000 , composition rate 25,000 Hz, movie 25,000 fps;
- Mediaportal, on the other hand, cannot play videos at 25 fps: The display and composition rate freeze at 60 Hz and the video is not playable (only audio is heard). No problem with standard video playback at 23.976 Hz.

So to sum it all up, if I remove 2160p50 display modes only MPC-HC reads video correctly at 25 fps.
If I add 2160p50 to the "Display modes" both players (MPC-HC and Mediaportal) read the videos at 25 fps but with a frequency of 50 hz. No problem with playing "standard" video at 23.976 Hz.