import subprocess
def video_add_mp4(file_name,mp4_file):
outfile_name = file_name.split('.')[0] + '-new.mp4'
cmd = f'F:\\FFmpeg\\bin\\ffmpeg -i {mp4_file} -i {file_name} -acodec copy -vcodec copy {outfile_name}'
print(cmd)
subprocess.call(cmd,shell=True)
if __name__ == '__main__':
a = 'D:\\project\\Spider\\B_zhan\\video\\新西游记-唠叨-还是算了吧-到此为止1.mp4' # 视频
b = 'D:\\project\\Spider\\B_zhan\\video\\新西游记-唠叨-还是算了吧-到此为止2.mp4' # 音频
video_add_mp4(a,b)
https://blog.youkuaiyun.com/pythonlaodi/article/details/109222790