Social Behavior Annotator

Dual Timeline · Custom Behaviors · Annotation v1.2

Annotate video segments with per-animal social behaviors. Separate Male and Female timelines, overlap-stacked sub-lanes, and user-defined behavior categories.

Annotation JSONs auto-save into the same folder as the source videos. Requires Chrome or Edge.

📹

Drop MP4 files here

or click to browse (manual save)

Select a video from the sidebar

Frame: -- / --

Speed:

Social Behavior

(click to pre-select, then I/O to mark — or press a number key)

Playback
Space	Play / Pause
← / →	Step one frame back / forward (pauses video)
Shift+←/→	Jump ±10 frames
Home / End	First / Last frame
, / .	Slower / Faster playback
Sex Target
M	Target Male timeline (top row)
F	Target Female timeline (bottom row)
Tab	Toggle Male / Female
Annotation
I	Mark In (start of segment) on current sex row
O	Mark Out → pick label
1 – 9	Select / assign behavior at that position
Escape	Cancel mark / close modal / deselect
Del / Backspace	Delete selected segment (click a segment first)
Ctrl+Z	Undo last add / delete / reassign / resize
Behavior Categories
+ Add	Click the + button to add a custom behavior
× (hover)	Hover a behavior button and click × to remove it
Navigation
N / P	Next / Previous video
?	Show this help

Social Behavior Annotator

Videos

Social Behavior

Keyboard Shortcuts

Social Behavior Annotator

Videos

Social Behavior

Select Label

Add Behavior Category

Keyboard Shortcuts