cupido/scripts/barrier_picker_app

Cupido — web-based barrier-opening picker

A small FastAPI + HTML5-video app for annotating the barrier-opening moment in each tracked recording. Lives in its own Docker container so it can run on the lab server without polluting any existing environment.

What it does

For every video referenced by all_video_info_merged.tsv that has a tracking DB on disk and isn't yet in barrier_opening.csv, it serves a <video> element pre-loaded with that mp4. The analyst plays / scrubs / pauses at the moment the barrier opens, then clicks one of:

button	meaning	written to bad_rois
All barriers open	every ROI (1..6) is usable post-opening	empty
Upper barriers open	only the top row opens (ROIs 1, 3, 5)	2,4,6
Lower barriers open	only the bottom row opens (ROIs 2, 4, 6)	1,3,5

Plus a Skip (advance without saving) and Unusable (write opening_s = NaN).

Keyboard shortcuts

• Space — play / pause
• ← / → — ±5 s
• Shift+arrows — ±1 s
• Ctrl+arrows — ±0.1 s
• , / . — ±1 frame
• 1 / 2 / 3 — All / Upper / Lower
• s — skip ; u — unusable

Run locally (docker compose)

cd scripts/barrier_picker_app
docker compose up --build

Then browse to http://localhost:8085/.

The container mounts:

• /mnt/data/projects/cupido (data volume, read-only)
• /mnt/ethoscope_data/videos (source mp4s, read-only)
• data/metadata/ from the repo (read-write — for persisting barrier_opening.csv)

Adjust paths in docker-compose.yml if your layout differs.

Run without Docker (development)

cd scripts/barrier_picker_app
pip install -r requirements.txt
python app.py     # serves on http://localhost:8000

By default it expects:

• merged TSV at /mnt/data/projects/cupido/all_video_info_merged.tsv
• inventory at /cupido/data/metadata/video_inventory.csv
• writes to /cupido/data/metadata/barrier_opening.csv

Override via environment variables:

CUPIDO_DATA_VOLUME=/path/to/data \
CUPIDO_INVENTORY_CSV=$(pwd)/../../data/metadata/video_inventory.csv \
CUPIDO_OUTPUT_CSV=$(pwd)/../../data/metadata/barrier_opening.csv \
python app.py