System and IINA version:

• macOS 14.0 Sonoma
• IINA 1.3.3

Expected behavior:
Smooth animation during trackpad pinch-to-zoom

Edit: also occurs when resizing window by any means while video is playing.

Actual behavior:

Steps to reproduce:

1. Go to IINA's Settings > Control > set Pinch to: to Adjust window size
2. Open a video in IINA and begin playing it.
3. Pinch the video. (Seems more prevalent on lower-FPS but high-quality videos. I picked a bad one to show above because it's 60fps) and I was playing it on a 60Hz display.

• MPV does not have this problem.

How often does this happen?

Usually.