基于opencv和ffmpeg的视频处理

import cv2
import subprocess

input_video_path = "/home/navy/Desktop/1.mp4"
opencv_video_path = "/home/navy/Desktop/2.mp4"
new_video_path = "/home/navy/Desktop/3.mp4"
# 打开视频文件
video = cv2.VideoCapture(input_video_path)

# 获取视频帧率和尺寸
fps = int(video.get(cv2.CAP_PROP_FPS))
width = int(video.get(cv2.CAP_PROP_FRAME_WIDTH))
height = int(video.get(cv2.CAP_PROP_FRAME_HEIGHT))

# 创建输出视频文件
fourcc = cv2.VideoWriter_fourcc(*'mp4v')
out = cv2.VideoWriter(opencv_video_path, fourcc, fps, (width, height))

# 处理每一帧并写入输出视频
while True:
    ret, frame = video.read()
    if not ret:
        break

    # 在这里对每一帧进行处理
    # ...

    out.write(frame)

# 释放资源
video.release()
out.release()

# 使用FFmpeg将音频从原始视频中提取出来并与生成的视频合并
subprocess.call(['ffmpeg', '-i', input_video_path, '-i', opencv_video_path, '-c:v', 'copy', '-c:a', 'aac', '-strict', 'experimental', new_video_path])