YouTube Shorts safe zones — 1080 x 1920
from getyoupush.com/tools/shorts-preview

Regions YouTube's own interface covers on a phone:
  Action buttons     x  907  y  806  162 x 960
  Title + handle     x   32  y 1517  853 x 288
  Progress bar       x    0  y 1891  1080 x 29
  Search / camera    x  734  y   29  324 x 106

Safe area (keep captions, faces, and anything you point at inside this):
  x 0  y 135  907 x 1382

Notes
  - On desktop youtube.com the action buttons sit beside the player, not on it,
    and the search/camera icons don't exist. Phone is the strict case: if the
    framing reads there, it reads everywhere.
  - A 9:16 centre crop of a 16:9 1080p frame keeps only the middle 607px column.
    Anything outside that is gone before the safe zones even apply.
  - These positions track YouTube's current mobile layout and shift with app
    releases. Re-check against the simulator if something looks off.