Crop error on videos containing landscape-rotated iOS screen recordings

[cc0800]

mpv version and platform

mpv 0.35.0 Copyright © 2000-2022 mpv/MPlayer/mplayer2 projects
 built on Mon Nov 14 04:47:57 2022
FFmpeg library versions:
   libavutil       57.42.100
   libavcodec      59.52.102
   libavformat     59.34.101
   libswscale      6.8.112
   libavfilter     8.50.100
   libswresample   4.9.100
FFmpeg version: git-2022-11-14-3ab11dc5b

Description

When attempting to crop a landscape-rotated video saved by the iOS screen recorder, the allowed cropping area does not properly match the video dimensions, rather it seems to be trying to restrict to some variant of the portrait aspect ratio. Additionally, the coordinates visually selected for cropping do not match what is actually cropped in the preview or final output webm.

Here is a Windows capture demonstrating the issue in action: https://streamable.com/5t65g3

Sample video file with the problem: https://user-images.githubusercontent.com/56432680/202983847-3448d13b-90a6-46f3-a305-f487244707a7.mp4

[frozenpandaman]

I've run into this same thing too when using Mac's built-in rotate command (Cmd+R) on videos prior to opening them in mpv.