$pip install pytube

from pytube import YouTube
url = 'https://www.youtube.com/watch"text-align: center">

2.融合音视频数据
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ffmpeg -i video_path -i audio_path -c:v copy -c:a aac -strict -2 output_path


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echo off

set v=D:\xdedzl\movie\videoset a=D:\xdedzl\movie\audioset o=D:\xdedzl\movieset /a i=1, b=49
:SymLoop

if %i% LSS %b% (
  echo %v%%i%.mp4
  echo %a%%i%.webm
  echo %o%%i%.mp4
  ffmpeg -i %v%%i%.mp4 -i %a%%i%.webm -c:v copy -c:a aac -strict -2 %o%%i%.mp4
  set /a "i+=1"
  GOTO :SymLoop 
)
pause