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d32e051 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 | """
Extract all frames from video/ as JPEG files into frames/.
Run once; idempotent (skips sessions already fully extracted).
Usage: python extract_frames.py
"""
import cv2
from pathlib import Path
from config import VIDEO_DIR, FRAMES_DIR
sessions = sorted(d for d in VIDEO_DIR.iterdir() if d.is_dir())
print(f"{len(sessions)} sessions found")
for si, sess_dir in enumerate(sessions):
for eye in (0, 1):
src = sess_dir / f"eye{eye}.mp4"
if not src.exists():
print(f"[SKIP] {sess_dir.name}/eye{eye} — no mp4")
continue
out_dir = FRAMES_DIR / sess_dir.name / f"eye{eye}"
cap = cv2.VideoCapture(str(src))
total = int(cap.get(cv2.CAP_PROP_FRAME_COUNT))
if out_dir.exists() and len(list(out_dir.glob("frame_*.jpg"))) == total:
print(f"[DONE] ({si+1}/{len(sessions)}) {sess_dir.name}/eye{eye} — already extracted")
cap.release()
continue
out_dir.mkdir(parents=True, exist_ok=True)
fi = 0
while True:
ret, frame = cap.read()
if not ret:
break
cv2.imwrite(str(out_dir / f"frame_{fi:05d}.jpg"), frame,
[cv2.IMWRITE_JPEG_QUALITY, 95])
fi += 1
cap.release()
print(f"[OK] ({si+1}/{len(sessions)}) {sess_dir.name}/eye{eye} — {fi} frames")
print("Done")
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