MKV, MP4, and MOV all support 90 FPS via framerates atom/box. Avoid AVI for high-FPS.
Save this file as mpv.conf inside %APPDATA%\mpv\ (Windows) or ~/.config/mpv/ (Linux/macOS). Then drag any 90 FPS video into mpv and press Ctrl+H to display stats – you will see exactly output. Need a specific code example for a custom 90 FPS video player using FFmpeg + SDL2? Request Part 2. 90 fps video player
It depends on your display. 90 FPS matches many mobile displays (OnePlus, Pixel, iPad Pro 2017-2021). For 120Hz displays, use a 120 FPS player instead. MKV, MP4, and MOV all support 90 FPS via framerates atom/box
It will play, but frames will be dropped or the video will be downsampled to 60 FPS, losing the smoothness benefit. iPad Pro 2017-2021). For 120Hz displays