{"id":996520,"date":"2024-12-27T09:15:45","date_gmt":"2024-12-27T01:15:45","guid":{"rendered":"https:\/\/docs.pingcode.com\/ask\/ask-ask\/996520.html"},"modified":"2024-12-27T09:15:47","modified_gmt":"2024-12-27T01:15:47","slug":"python%e4%b8%ad%e5%a6%82%e4%bd%95%e7%bc%96%e8%be%91%e8%a7%86%e9%a2%91","status":"publish","type":"post","link":"https:\/\/docs.pingcode.com\/ask\/996520.html","title":{"rendered":"python\u4e2d\u5982\u4f55\u7f16\u8f91\u89c6\u9891"},"content":{"rendered":"

\"python\u4e2d\u5982\u4f55\u7f16\u8f91\u89c6\u9891\"<\/p>\n

\u5728Python\u4e2d\u7f16\u8f91\u89c6\u9891\uff0c\u53ef\u4ee5\u4f7f\u7528\u591a\u4e2a\u5e93\uff0c\u5982OpenCV\u3001MoviePy\u548cFFmpeg\u3002OpenCV\u63d0\u4f9b\u4e86\u5f3a\u5927\u7684\u56fe\u50cf\u5904\u7406\u529f\u80fd\u3001MoviePy\u7b80\u5316\u4e86\u89c6\u9891\u7f16\u8f91\u6d41\u7a0b\u3001FFmpeg\u5219\u662f\u4e00\u4e2a\u529f\u80fd\u5168\u9762\u7684\u591a\u5a92\u4f53\u5904\u7406\u5de5\u5177\u3002<\/strong>\u672c\u6587\u5c06\u8be6\u7ec6\u4ecb\u7ecd\u5982\u4f55\u4f7f\u7528\u8fd9\u4e9b\u5e93\u6765\u5b9e\u73b0Python\u4e2d\u7684\u89c6\u9891\u7f16\u8f91\u3002<\/p>\n<\/p>\n

\u4e00\u3001PYTHON\u89c6\u9891\u7f16\u8f91\u6982\u8ff0<\/p>\n<\/p>\n

Python\u662f\u4e00\u79cd\u529f\u80fd\u5f3a\u5927\u7684\u7f16\u7a0b\u8bed\u8a00\uff0c\u63d0\u4f9b\u4e86\u591a\u79cd\u5e93\u7528\u4e8e\u89c6\u9891\u7f16\u8f91\u3002Python\u89c6\u9891\u7f16\u8f91\u901a\u5e38\u6d89\u53ca\u8bfb\u53d6\u89c6\u9891\u6587\u4ef6\u3001\u5904\u7406\u6bcf\u4e00\u5e27\uff0c\u5e76\u5c06\u4fee\u6539\u540e\u7684\u5e27\u5199\u5165\u65b0\u7684\u89c6\u9891\u6587\u4ef6\u3002\u4e86\u89e3\u8fd9\u4e9b\u57fa\u672c\u6982\u5ff5\u6709\u52a9\u4e8e\u6211\u4eec\u5728\u5177\u4f53\u7684\u5b9e\u73b0\u4e2d\u66f4\u597d\u5730\u5e94\u7528\u3002<\/p>\n<\/p>\n

\u89c6\u9891\u7f16\u8f91\u7684\u4e00\u4e2a\u57fa\u672c\u6b65\u9aa4\u662f\u8bfb\u53d6\u89c6\u9891\u6587\u4ef6\u3002Python\u4e2d\u7684OpenCV\u5e93\u63d0\u4f9b\u4e86\u4e00\u4e2a\u7b80\u5355\u7684\u65b9\u6cd5\u6765\u5b9e\u73b0\u8fd9\u4e00\u70b9\u3002\u901a\u8fc7OpenCV\uff0c\u60a8\u53ef\u4ee5\u6253\u5f00\u89c6\u9891\u6587\u4ef6\uff0c\u5e76\u9010\u5e27\u8bfb\u53d6\u6570\u636e\u3002\u7136\u540e\uff0c\u60a8\u53ef\u4ee5\u4f7f\u7528Python\u7684\u5176\u4ed6\u56fe\u50cf\u5904\u7406\u5e93\u5bf9\u8fd9\u4e9b\u5e27\u8fdb\u884c\u64cd\u4f5c\u3002<\/p>\n<\/p>\n

\u5728\u7f16\u8f91\u89c6\u9891\u65f6\uff0c\u53e6\u4e00\u4e2a\u91cd\u8981\u6b65\u9aa4\u662f\u5c06\u5904\u7406\u540e\u7684\u5e27\u5199\u5165\u65b0\u7684\u89c6\u9891\u6587\u4ef6\u3002MoviePy\u5e93\u5728\u8fd9\u65b9\u9762\u8868\u73b0\u51fa\u8272\uff0c\u56e0\u4e3a\u5b83\u63d0\u4f9b\u4e86\u4e00\u79cd\u9ad8\u6548\u4e14\u6613\u4e8e\u4f7f\u7528\u7684\u65b9\u6cd5\u6765\u521b\u5efa\u548c\u4fdd\u5b58\u89c6\u9891\u6587\u4ef6\u3002\u6b64\u5916\uff0cMoviePy\u8fd8\u652f\u6301\u8bb8\u591a\u9ad8\u7ea7\u89c6\u9891\u7f16\u8f91\u529f\u80fd\uff0c\u5982\u89c6\u9891\u526a\u8f91\u3001\u5408\u5e76\u548c\u6dfb\u52a0\u97f3\u9891\u7b49\u3002<\/p>\n<\/p>\n

\u4e8c\u3001OPENCV\u5728\u89c6\u9891\u7f16\u8f91\u4e2d\u7684\u5e94\u7528<\/p>\n<\/p>\n

OpenCV\uff08Open Source Computer Vision Library\uff09\u662f\u4e00\u4e2a\u5f00\u6e90\u8ba1\u7b97\u673a\u89c6\u89c9\u548c\u673a\u5668\u5b66\u4e60<\/a>\u8f6f\u4ef6\u5e93\u3002\u5b83\u5177\u6709\u5f3a\u5927\u7684\u56fe\u50cf\u548c\u89c6\u9891\u5904\u7406\u529f\u80fd\uff0c\u662fPython\u4e2d\u89c6\u9891\u7f16\u8f91\u7684\u4e00\u4e2a\u91cd\u8981\u5de5\u5177\u3002<\/p>\n<\/p>\n

    \n
  1. \u8bfb\u53d6\u548c\u663e\u793a\u89c6\u9891<\/strong><\/li>\n<\/ol>\n

    \u4f7f\u7528OpenCV\uff0c\u60a8\u53ef\u4ee5\u8f7b\u677e\u8bfb\u53d6\u548c\u663e\u793a\u89c6\u9891\u3002\u9996\u5148\uff0c\u60a8\u9700\u8981\u5b89\u88c5OpenCV\u5e93\u3002\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u547d\u4ee4\u6765\u5b89\u88c5\uff1a<\/p>\n<\/p>\n

    pip install opencv-python<\/p>\n
    <\/code><\/pre>\n<\/p>\n
    \u7136\u540e\uff0c\u4f7f\u7528\u4ee5\u4e0b\u4ee3\u7801\u8bfb\u53d6\u548c\u663e\u793a\u89c6\u9891\uff1a<\/p>\n<\/p>\n
    import cv2<\/p>\n
    \u6253\u5f00\u89c6\u9891\u6587\u4ef6<\/strong><\/h2>\n
    cap = cv2.VideoCapture('input_video.mp4')<\/p>\n
    while cap.isOpened():<\/p>\n
        ret, frame = cap.read()<\/p>\n
        if not ret:<\/p>\n
            break<\/p>\n
        # \u663e\u793a\u89c6\u9891\u5e27<\/p>\n
        cv2.imshow('Video', frame)<\/p>\n
        # \u6309\u4e0bq\u952e\u9000\u51fa<\/p>\n
        if cv2.wAI<\/a>tKey(25) & 0xFF == ord('q'):<\/p>\n
            break<\/p>\n
    cap.release()<\/p>\n
    cv2.destroyAllWindows()<\/p>\n
    <\/code><\/pre>\n<\/p>\n
      \n
    1. \u5904\u7406\u89c6\u9891\u5e27<\/strong><\/li>\n<\/ol>\n
      \u60a8\u53ef\u4ee5\u4f7f\u7528OpenCV\u5bf9\u89c6\u9891\u5e27\u8fdb\u884c\u5404\u79cd\u5904\u7406\uff0c\u5982\u8f6c\u6362\u4e3a\u7070\u5ea6\u56fe\u50cf\u3001\u5e94\u7528\u6ee4\u6ce2\u5668\u7b49\u3002\u4ee5\u4e0b\u662f\u4e00\u4e2a\u5c06\u89c6\u9891\u8f6c\u6362\u4e3a\u7070\u5ea6\u7684\u793a\u4f8b\uff1a<\/p>\n<\/p>\n
      while cap.isOpened():<\/p>\n
          ret, frame = cap.read()<\/p>\n
          if not ret:<\/p>\n
              break<\/p>\n
          # \u8f6c\u6362\u4e3a\u7070\u5ea6<\/p>\n
          gray_frame = cv2.cvtColor(frame, cv2.COLOR_BGR2GRAY)<\/p>\n
          # \u663e\u793a\u7070\u5ea6\u89c6\u9891\u5e27<\/p>\n
          cv2.imshow('Gray Video', gray_frame)<\/p>\n
          if cv2.waitKey(25) & 0xFF == ord('q'):<\/p>\n
              break<\/p>\n
      <\/code><\/pre>\n<\/p>\n
        \n
      1. \u4fdd\u5b58\u5904\u7406\u540e\u7684\u89c6\u9891<\/strong><\/li>\n<\/ol>\n
        \u4f7f\u7528OpenCV\u53ef\u4ee5\u5c06\u5904\u7406\u540e\u7684\u5e27\u5199\u5165\u65b0\u7684\u89c6\u9891\u6587\u4ef6\uff1a<\/p>\n<\/p>\n
        # \u5b9a\u4e49\u7f16\u89e3\u7801\u5668\u5e76\u521b\u5efa VideoWriter \u5bf9\u8c61<\/p>\n
        fourcc = cv2.VideoWriter_fourcc(*'XVID')<\/p>\n
        out = cv2.VideoWriter('output_video.avi', fourcc, 20.0, (640, 480))<\/p>\n
        while cap.isOpened():<\/p>\n
            ret, frame = cap.read()<\/p>\n
            if not ret:<\/p>\n
                break<\/p>\n
            # \u5904\u7406\u5e27<\/p>\n
            gray_frame = cv2.cvtColor(frame, cv2.COLOR_BGR2GRAY)<\/p>\n
            # \u5199\u5165\u5e27<\/p>\n
            out.write(gray_frame)<\/p>\n
        cap.release()<\/p>\n
        out.release()<\/p>\n
        <\/code><\/pre>\n<\/p>\n
        \u4e09\u3001MOVIEPY\u5728\u89c6\u9891\u7f16\u8f91\u4e2d\u7684\u5e94\u7528<\/p>\n<\/p>\n
        MoviePy\u662f\u4e00\u4e2a\u7528\u4e8e\u89c6\u9891\u7f16\u8f91\u7684Python\u5e93\uff0c\u652f\u6301\u89c6\u9891\u526a\u8f91\u3001\u5408\u5e76\u3001\u8f6c\u6362\u4ee5\u53ca\u5728\u89c6\u9891\u4e2d\u6dfb\u52a0\u97f3\u9891\u548c\u6587\u672c\u7b49\u529f\u80fd\u3002\u5b83\u4e0eOpenCV\u7ed3\u5408\u4f7f\u7528\uff0c\u53ef\u4ee5\u5927\u5927\u7b80\u5316\u89c6\u9891\u5904\u7406\u6d41\u7a0b\u3002<\/p>\n<\/p>\n
          \n
        1. \u5b89\u88c5\u548c\u57fa\u672c\u4f7f\u7528<\/strong><\/li>\n<\/ol>\n
          \u9996\u5148\u5b89\u88c5MoviePy\uff1a<\/p>\n<\/p>\n
          pip install moviepy<\/p>\n
          <\/code><\/pre>\n<\/p>\n
          \u4f7f\u7528MoviePy\u8bfb\u53d6\u548c\u663e\u793a\u89c6\u9891\uff1a<\/p>\n<\/p>\n
          from moviepy.editor import VideoFileClip<\/p>\n
          \u8bfb\u53d6\u89c6\u9891\u6587\u4ef6<\/strong><\/h2>\n
          clip = VideoFileClip("input_video.mp4")<\/p>\n
          \u663e\u793a\u89c6\u9891\u4fe1\u606f<\/strong><\/h2>\n
          print(f"Duration: {clip.duration}s, FPS: {clip.fps}, Size: {clip.size}")<\/p>\n
          \u663e\u793a\u89c6\u9891<\/strong><\/h2>\n
          clip.preview()<\/p>\n
          <\/code><\/pre>\n<\/p>\n
            \n
          1. \u89c6\u9891\u526a\u8f91\u548c\u5408\u5e76<\/strong><\/li>\n<\/ol>\n
            MoviePy\u4f7f\u5f97\u89c6\u9891\u526a\u8f91\u548c\u5408\u5e76\u53d8\u5f97\u975e\u5e38\u7b80\u5355\u3002\u4ee5\u4e0b\u662f\u526a\u8f91\u89c6\u9891\u7684\u793a\u4f8b\uff1a<\/p>\n<\/p>\n
            # \u526a\u8f91\u89c6\u9891\uff0c\u4ece10\u79d2\u5f00\u59cb\u523020\u79d2\u7ed3\u675f<\/p>\n
            subclip = clip.subclip(10, 20)<\/p>\n
            subclip.preview()<\/p>\n
            <\/code><\/pre>\n<\/p>\n
            \u5408\u5e76\u591a\u4e2a\u89c6\u9891\u6587\u4ef6\uff1a<\/p>\n<\/p>\n
            from moviepy.editor import concatenate_videoclips<\/p>\n
            \u8bfb\u53d6\u591a\u4e2a\u89c6\u9891\u6587\u4ef6<\/strong><\/h2>\n
            clip1 = VideoFileClip("video1.mp4")<\/p>\n
            clip2 = VideoFileClip("video2.mp4")<\/p>\n
            \u5408\u5e76\u89c6\u9891<\/strong><\/h2>\n
            final_clip = concatenate_videoclips([clip1, clip2])<\/p>\n
            final_clip.write_videofile("merged_video.mp4")<\/p>\n
            <\/code><\/pre>\n<\/p>\n
              \n
            1. \u6dfb\u52a0\u97f3\u9891\u548c\u6587\u672c<\/strong><\/li>\n<\/ol>\n
              MoviePy\u8fd8\u53ef\u4ee5\u8f7b\u677e\u5730\u5411\u89c6\u9891\u4e2d\u6dfb\u52a0\u97f3\u9891\u548c\u6587\u672c\uff1a<\/p>\n<\/p>\n
              from moviepy.editor import TextClip, CompositeVideoClip<\/p>\n
              \u521b\u5efa\u6587\u672c\u526a\u8f91<\/strong><\/h2>\n
              txt_clip = TextClip("Hello World!", fontsize=70, color='white')<\/p>\n
              txt_clip = txt_clip.set_position('center').set_duration(10)<\/p>\n
              \u5728\u89c6\u9891\u4e2d\u6dfb\u52a0\u6587\u672c<\/strong><\/h2>\n
              video = CompositeVideoClip([clip, txt_clip])<\/p>\n
              video.write_videofile("video_with_text.mp4", fps=24)<\/p>\n
              \u6dfb\u52a0\u97f3\u9891<\/strong><\/h2>\n
              audio = VideoFileClip("audio.mp3").subclip(0, clip.duration)<\/p>\n
              video_with_audio = video.set_audio(audio)<\/p>\n
              video_with_audio.write_videofile("video_with_audio.mp4", fps=24)<\/p>\n
              <\/code><\/pre>\n<\/p>\n
              \u56db\u3001FFMPEG\u5728\u89c6\u9891\u7f16\u8f91\u4e2d\u7684\u5e94\u7528<\/p>\n<\/p>\n
              FFmpeg\u662f\u4e00\u4e2a\u5f3a\u5927\u7684\u591a\u5a92\u4f53\u5904\u7406\u5de5\u5177\uff0c\u652f\u6301\u51e0\u4e4e\u6240\u6709\u7684\u97f3\u9891\u548c\u89c6\u9891\u683c\u5f0f\u3002\u867d\u7136FFmpeg\u901a\u5e38\u901a\u8fc7\u547d\u4ee4\u884c\u4f7f\u7528\uff0c\u4f46\u4e5f\u53ef\u4ee5\u5728Python\u4e2d\u901a\u8fc7\u5404\u79cd\u5e93\u8c03\u7528\u3002<\/p>\n<\/p>\n
                \n
              1. \u5b89\u88c5FFmpeg<\/strong><\/li>\n<\/ol>\n
                \u9996\u5148\uff0c\u60a8\u9700\u8981\u5b89\u88c5FFmpeg\u3002\u53ef\u4ee5\u4eceFFmpeg\u7684\u5b98\u65b9\u7f51\u7ad9\u4e0b\u8f7d\u5e76\u5b89\u88c5\u9002\u5408\u60a8\u64cd\u4f5c\u7cfb\u7edf\u7684\u7248\u672c\u3002<\/p>\n<\/p>\n
                  \n
                1. \u4f7f\u7528FFmpeg\u8fdb\u884c\u57fa\u672c\u89c6\u9891\u5904\u7406<\/strong><\/li>\n<\/ol>\n
                  \u901a\u8fc7Python\u8c03\u7528FFmpeg\u5904\u7406\u89c6\u9891\uff1a<\/p>\n<\/p>\n
                  import os<\/p>\n
                  \u88c1\u526a\u89c6\u9891<\/strong><\/h2>\n
                  os.system("ffmpeg -i input_video.mp4 -vf 'crop=640:480' output_video.mp4")<\/p>\n
                  \u8f6c\u6362\u89c6\u9891\u683c\u5f0f<\/strong><\/h2>\n
                  os.system("ffmpeg -i input_video.mp4 output_video.avi")<\/p>\n
                  <\/code><\/pre>\n<\/p>\n
                    \n
                  1. \u4f7f\u7528FFmpeg\u5e93\u8fdb\u884c\u89c6\u9891\u5904\u7406<\/strong><\/li>\n<\/ol>\n
                    \u5728Python\u4e2d\uff0c\u8fd8\u6709\u4e00\u4e9b\u5e93\u53ef\u4ee5\u7b80\u5316FFmpeg\u7684\u4f7f\u7528\uff0c\u5982ffmpeg-python\u3002\u9996\u5148\u5b89\u88c5\uff1a<\/p>\n<\/p>\n
                    pip install ffmpeg-python<\/p>\n
                    <\/code><\/pre>\n<\/p>\n
                    \u4f7f\u7528ffmpeg-python\u8fdb\u884c\u89c6\u9891\u5904\u7406\uff1a<\/p>\n<\/p>\n
                    import ffmpeg<\/p>\n
                    \u8bfb\u53d6\u89c6\u9891\u4fe1\u606f<\/strong><\/h2>\n
                    probe = ffmpeg.probe('input_video.mp4')<\/p>\n
                    video_info = next(stream for stream in probe['streams'] if stream['codec_type'] == 'video')<\/p>\n
                    width = int(video_info['width'])<\/p>\n
                    height = int(video_info['height'])<\/p>\n
                    print(f"Video width: {width}, height: {height}")<\/p>\n
                    \u8f6c\u6362\u89c6\u9891\u683c\u5f0f<\/strong><\/h2>\n
                    ffmpeg.input('input_video.mp4').output('output_video.avi').run()<\/p>\n
                    <\/code><\/pre>\n<\/p>\n
                    \u603b\u7ed3<\/strong><\/p>\n<\/p>\n
                    \u5728Python\u4e2d\u7f16\u8f91\u89c6\u9891\u53ef\u4ee5\u901a\u8fc7\u591a\u79cd\u5de5\u5177\u5b9e\u73b0\u3002OpenCV\u63d0\u4f9b\u4e86\u5f3a\u5927\u7684\u5e27\u5904\u7406\u529f\u80fd\uff0cMoviePy\u7b80\u5316\u4e86\u89c6\u9891\u7f16\u8f91\u7684\u6d41\u7a0b\uff0c\u800cFFmpeg\u5219\u63d0\u4f9b\u4e86\u5168\u9762\u7684\u591a\u5a92\u4f53\u5904\u7406\u80fd\u529b\u3002\u6839\u636e\u5177\u4f53\u9700\u6c42\u9009\u62e9\u5408\u9002\u7684\u5de5\u5177\uff0c\u53ef\u4ee5\u5927\u5927\u63d0\u9ad8\u89c6\u9891\u7f16\u8f91\u7684\u6548\u7387\u548c\u6548\u679c\u3002\u65e0\u8bba\u662f\u7b80\u5355\u7684\u5e27\u5904\u7406\u3001\u89c6\u9891\u526a\u8f91\u548c\u5408\u5e76\uff0c\u8fd8\u662f\u590d\u6742\u7684\u89c6\u9891\u683c\u5f0f\u8f6c\u6362\u548c\u7279\u6548\u6dfb\u52a0\uff0cPython\u90fd\u80fd\u4e3a\u60a8\u63d0\u4f9b\u5f3a\u5927\u7684\u652f\u6301\u3002<\/p>\n<\/p>\n
                    \u76f8\u5173\u95ee\u7b54FAQs\uff1a<\/strong><\/h2>\n
                     \u5982\u4f55\u5728Python\u4e2d\u5bfc\u5165\u89c6\u9891\u6587\u4ef6\uff1f<\/strong>
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