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# ---------------------------------------------------------------------- # 3️⃣ UTILS – FRAME SAMPLING & PRE‑PROCESSING # ---------------------------------------------------------------------- def sample_frames(video_path: pathlib.Path, fps=FPS_SAMPLE, max_seconds=MAX_SECONDS): """ Returns a list of RGB frames (as torch.FloatTensor) sampled uniformly. """ # Use ffmpeg to read a precise subset of frames – faster than cv2 for large files. import ffmpeg probe = ffmpeg.probe(str(video_path)) video_stream = next(s for s in probe['streams'] if s['codec_type'] == 'video') total_frames = int(video_stream['nb_frames']) duration = float(video_stream['duration']) orig_fps = float(video_stream['r_frame_rate'].split('/')[0]) / float(video_stream['r_frame_rate'].split('/')[1]) pppd515mp4 extra quality
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