| """Generate a couple of tiny synthetic .mp4 files to smoke-test the pipeline.""" |
|
|
| import os |
|
|
| import cv2 |
| import numpy as np |
|
|
| OUT_DIR = os.path.join(os.path.dirname(os.path.dirname(os.path.abspath(__file__))), "sample_videos") |
| os.makedirs(OUT_DIR, exist_ok=True) |
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|
|
|
| def make_video(path, seed, seconds=3, fps=10, size=(160, 120)): |
| fourcc = cv2.VideoWriter_fourcc(*"mp4v") |
| writer = cv2.VideoWriter(path, fourcc, fps, size) |
| rng = np.random.default_rng(seed) |
| base = rng.integers(0, 255, (size[1], size[0], 3), dtype=np.uint8) |
| for i in range(seconds * fps): |
| frame = base.copy() |
| cv2.circle(frame, (20 + (i * 4) % size[0], 60), 10, (0, 0, 255), -1) |
| writer.write(frame) |
| writer.release() |
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|
|
|
| if __name__ == "__main__": |
| make_video(os.path.join(OUT_DIR, "original.mp4"), seed=1) |
| make_video(os.path.join(OUT_DIR, "duplicate_reencoded.mp4"), seed=1) |
| make_video(os.path.join(OUT_DIR, "unrelated.mp4"), seed=99) |
| print("Wrote sample videos to", OUT_DIR) |
|
|
