Youtube QuarterMaster

Easily view and switch between individual quadrants of a youtube video.

Note: Playback only works for videos where the creator allows embedding (playback outside YouTube).

1. Video

Paste a standard YouTube /watch URL (e.g., https://www.youtube.com/watch?v=XXXXXXXXXXX) or just the 11‑character video ID (e.g., 9bZkp7q19f).

2. Crop mode

Shortcuts: 1=TL, 2=TR, 3=BL, 4=BR
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