用Python写一个视频格式转换器

一、怎样正确安装moviepy库

笔者尝试用这两个命令行安装:“pip install moviepy”、“pip install -i http://mirrors.aliyun.com/pypi/simple/ moviepy”都不能成功。后来用这个命令行:“pip install moviepy -i https://pypi.tuna.tsinghua.edu.cn/simple/”方能将此库安装完成。

二、视频格式转换器代码

from moviepy.editor import VideoFileClip

def convert_video_format(input_video_path, output_video_path, codec='libx264'):
    """
    Convert a video file from one format to another.
    :param(参数) input_video_path: Path to the input video file.
    :param output_video_path: Path where the converted video should be saved.
    :param codec: The codec to use for encoding the output video. Defaults to 'libx264' for MP4/H.264.
    """
    try:
        # Load the video clip
        video_clip = VideoFileClip(input_video_path)

        # Write the video clip to a new file with the desired format
        video_clip.write_videofile(output_video_path, codec=codec)

        print(f"Conversion completed successfully. Output file: {output_video_path}")

    except Exception as e:
        print(f"An error occurred during conversion: {e}")

# Example usage:
if __name__ == "__main__":
    input_video = "example_input.mp4"  # Replace(替换) with your input video file path
    output_video = "example_output.avi"  # Replace with the desired output video file path and format
    convert_video_format(input_video, output_video, codec='rawvideo')  # Use the appropriate codec for the output format

三、代码相关说明

1.convert_video_format函数接收输入视频路径、输出视频路径以及一个可选的编解码器参数。函数尝试加载输入视频,然后使用指定的编解码器将其写入新文件。
2.注意:codec参数的值取决于您希望输出的视频格式。例如,MP4文件,则使用libx264(H.264编码),AVI文件,则使用rawvideo。所以得找到相关格式的编码,并在代码中进行更改。
3.可能存在的问题:此代码虽然能正确运行,但是在路径输入问题上,这样直接替换的作法不是太好。

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