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import cv2
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import os
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import sys
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from datetime import timedelta
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def extract_frames_per_second(video_path, output_dir, interval_seconds=3):
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"""
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从视频中每隔 interval_seconds 提取一帧并保存到指定目录(按时间定位,保证时间戳单调递增)。
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:param video_path: 视频文件的路径
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:param output_dir: 帧图片的保存目录
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:param interval_seconds: 每隔多少秒保存一帧(默认3秒)
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"""
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os.makedirs(output_dir, exist_ok=True)
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if os.path.exists(output_dir) and os.listdir(output_dir):
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print(f"输出目录已存在且非空,跳过提取:{os.path.abspath(output_dir)}")
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return
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os.makedirs(output_dir, exist_ok=True)
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print(f"帧保存目录:{os.path.abspath(output_dir)}")
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cap = cv2.VideoCapture(video_path)
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if not cap.isOpened():
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raise ValueError(f"无法打开视频文件:{video_path}")
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fps = cap.get(cv2.CAP_PROP_FPS)
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total_frames = int(cap.get(cv2.CAP_PROP_FRAME_COUNT))
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duration = total_frames / fps if fps > 0 else 0
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print(f"视频信息:帧率={fps:.2f} FPS | 总帧数={total_frames} | 总时长={timedelta(seconds=duration)}")
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if fps <= 0:
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raise ValueError("无法获取视频帧率,视频文件可能损坏或格式不支持")
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saved_count = 0
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try:
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t = 0.0
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while t <= duration:
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cap.set(cv2.CAP_PROP_POS_MSEC, t * 1000)
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ret, frame = cap.read()
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if not ret:
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break
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frame_filename = f"{saved_count:06d}_{t:.2f}s.jpg"
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frame_path = os.path.join(output_dir, frame_filename)
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cv2.imwrite(frame_path, frame)
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saved_count += 1
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if saved_count % 10 == 0:
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progress = (t / duration) * 100 if duration > 0 else 0
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print(f"进度:{progress:.1f}% | 已保存 {saved_count} 帧 | 时间:{t:.2f}s")
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t += interval_seconds
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except Exception as e:
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raise RuntimeError(f"提取帧时发生错误:{str(e)}")
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finally:
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cap.release()
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cv2.destroyAllWindows()
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print(f"\n提取完成!共保存 {saved_count} 帧,保存路径:{os.path.abspath(output_dir)}")
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output_dirs = ["/fi-lib/workspace/sjx/DiffSynth-Studio/dataset/no other choice","/fi-lib/workspace/sjx/DiffSynth-Studio/dataset/the roses","/fi-lib/workspace/sjx/DiffSynth-Studio/dataset/nouvelle","/fi-lib/workspace/sjx/DiffSynth-Studio/dataset/legs","/fi-lib/workspace/sjx/DiffSynth-Studio/dataset/frankenstein"]
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input_dirs = ["/fi-lib/workspace/sjx/DiffSynth-Studio/dataset/films/어쩔수가없다 NO OTHER CHOICE, 2025.1080p.WEB-DL.H264.AAC.mp4","/fi-lib/workspace/sjx/DiffSynth-Studio/dataset/films/The.Roses.2025.2160p.WEB-DL.DDP5.1.Atmos.SDR.H265-AOC/The.Roses.2025.2160p.WEB-DL.DDP5.1.Atmos.SDR.H265-AOC.mkv","/fi-lib/workspace/sjx/DiffSynth-Studio/dataset/films/NOUVELLE.VAGUE.2025.2160p.NF.WEB-DL.DDP.5.1.H.265-CHDWEB[PianYuan]/NOUVELLE.VAGUE.2025.2160p.NF.WEB-DL.DDP.5.1.H.265-CHDWEB.mkv","/fi-lib/workspace/sjx/DiffSynth-Studio/dataset/films/If.I.Had.Legs.Id.Kick.You.2025.1080p.iT.WEB-DL.DDP5.1.Atmos.H264-BTM/If.I.Had.Legs.Id.Kick.You.2025.1080p.iT.WEB-DL[Ben The Men].mkv","/fi-lib/workspace/sjx/DiffSynth-Studio/dataset/films/Frankenstein.2025.1080p.NF.WEB-DL.DDP5.1.Atmos.H.264-FLUX/Frankenstein.2025.1080p.NF.WEB-DL.DDP5.1.Atmos.H.264-FLUX.mkv"]
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if __name__ == "__main__":
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for i in range(len(output_dirs)):
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try:
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extract_frames_per_second(video_path=input_dirs[i],output_dir=output_dirs[i],interval_seconds=3)
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except Exception as e:
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print(f"程序异常:{str(e)}", file=sys.stderr)
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sys.exit(1)
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