如何使用Python将视频分成几部分？

Question

我需要将任意大小的视频文件分割成最大大小不超过 75 MB 的各个部分。我找到了这段代码，但它不起作用：

import cv

capture = cv.CaptureFromFile(filename)
while Condition1:
    # Need a frame to get the output video dimensions
    frame = cv.RetrieveFrame(capture) # Will return None if there are no frames
    # New video file
    video_out = cv.CreateVideoWriter(output_filenameX, CV_FOURCC('M','J','P','G'), capture.fps, frame.size(), 1)
    # Write the frames
    cv.WriteFrame(video_out, frame)
    while Condition2:
        frame = cv.RetrieveFrame(capture) # Will return None if there are no frames
        cv.WriteFrame(video_out, frame)

Answer 1

这是我刚刚使用 MoviePy 创建的脚本。但不是除以字节大小，而是除以视频长度。因此，如果您将

divide_into_count

设置为 5 并且您有一个长度为 22 分钟的视频，那么您将获得长度为 5, 5, 5, 5, 2 分钟的视频。

from moviepy.editor import VideoFileClip
from time import sleep

full_video = "full.mp4"
current_duration = VideoFileClip(full_video).duration
divide_into_count = 5
single_duration = current_duration/divide_into_count
current_video = f"{current_duration}.mp4"

while current_duration > single_duration:
    clip = VideoFileClip(full_video).subclip(current_duration-single_duration, current_duration)
    current_duration -= single_duration
    current_video = f"{current_duration}.mp4"
    clip.to_videofile(current_video, codec="libx264", temp_audiofile='temp-audio.m4a', remove_temp=True, audio_codec='aac')

    print("-----------------###-----------------")

Answer 2

Avne Desta 的解决方案（非常棒，对我很有帮助）， 有一些细微的变化 以我的拙见，我认为这是更具可读性的代码（真的没有冒犯！），因为它不会反转，并且有一些小的命名内容。 它使用更方便的文件名（恕我直言），part_1、part_2 等。 它分为固定时间块。

所有积分均归原创者所有，而不是我！

full_video = r"20secs.mp4"
partDura = 8 # duration of a part in seconds

from moviepy.editor import VideoFileClip
from time import sleep

fullDura = VideoFileClip(full_video).duration
startPos = 0

i = 1 
while True:
    endPos = startPos + partDura

    if endPos > fullDura:
        endPos = fullDura

    clip = VideoFileClip(full_video).subclip(startPos, endPos)

    part_name = "part_"+str(i)+".mp4"
    clip.to_videofile(part_name, codec="libx264", temp_audiofile='temp-audio.m4a', remove_temp=True, audio_codec='aac')
    print("part ",i,"done")
    i += 1
    
    startPos = endPos # jump to next clip
    
    if startPos >= fullDura:
        break

Answer 3

您可以使用此工作示例来获取视频的两半，您 可以使用 'divide_into_count = 2' 相应地调整代码 对于多于 2 个视频部分的声明，请注意最后一个声明 该功能会删除原始输入视频文件

from moviepy.editor import VideoFileClip
import os

def split_videos(unsplit_videos_directory):
    files = [file_name for file_name in os.listdir(unsplit_videos_directory) if file_name.endswith(".mp4")]

    for file_name in files:
        input_video_path = os.path.join(unsplit_videos_directory, file_name)

        clip = VideoFileClip(input_video_path)
        current_duration = clip.duration
        divide_into_count = 2  # You can adjust this value as needed
        single_duration = current_duration / divide_into_count

        while current_duration > single_duration:
            # Split the video into two equal halves
            subclip = clip.subclip(current_duration - single_duration, current_duration)

            # Save each subclip with the original filename and appropriate suffix
            file_base_name, file_extension = os.path.splitext(file_name)
            first_half_filename = os.path.join(unsplit_videos_directory, f"{file_base_name}_part2{file_extension}")
            second_half_filename = os.path.join(unsplit_videos_directory, f"{file_base_name}_part1{file_extension}")

            subclip.to_videofile(first_half_filename, codec="libx264", audio_codec="aac")
            subclip.close()  # Close the subclip before creating the second one

            # Create the second subclip
            subclip = clip.subclip(current_duration - 2 * single_duration, current_duration - single_duration)
            subclip.to_videofile(second_half_filename, codec="libx264", audio_codec="aac")

            # Close the second subclip
        subclip.close()

            # Update current_duration for the next iteration
            current_duration -= single_duration

            print(f"Video split and saved: {first_half_filename} and {second_half_filename}")

        # Remove the original video
        os.remove(input_video_path)

# Example usage
unsplit_videos_directory = "/path/to/unsplit_videos"
split_videos(unsplit_videos_directory)