Python 사용하여 Youtube 영상에서 MP3 추출하기 (CentOS 8)

1. CentOS 8에 FFMpeg 설치하기

기본 저장소로는 FFMpeg를 설치할 수 없어 저장소를 추가하고 설치한다.

 

Step 1: EPEL repository 설치

yum install https://dl.fedoraproject.org/pub/epel/epel-release-latest-8.noarch.rpm

Step 2: RPM Fusion repository 설치

yum install https://download1.rpmfusion.org/free/el/rpmfusion-free-release-8.noarch.rpm https://download1.rpmfusion.org/nonfree/el/rpmfusion-nonfree-release-8.noarch.rpm

Step 3: SDL2 Library 설치. FFMpeg는 SDL2 라이브러리를 사용해야 한다.

yum install http://rpmfind.net/linux/epel/7/x86_64/Packages/s/SDL2-2.0.10-1.el7.x86_64.rpm

Step 4: FFMpeg 설치

yum install ffmpeg ffmpeg-devel

 

2. CentOS 8에 Python 3.8 설치

yum install python38

 

3. pip3 로 youtube_dl, ffmpeg 설치

yum install youtube_dl
yum install ffmpeg

4. Python 코드 작성

출처: https://gist.github.com/benzap/90ff22790bc0a9c6fd2902e91da4baef

Youtube to MP3 Downloader Script

#!/bin/env python
# Requires: youtube_dl module
# Requires: ffmpeg
# Usage:
#
# python youtube2mp3.py <URL>, ...
# 
# Example:
# 
# python youtube2mp3.py https://www.youtube.com/watch?v=dQw4w9WgXcQ
import youtube_dl
import sys
ydl_opts = {
    'format': 'bestaudio/best',
    'postprocessors': [{
        'key': 'FFmpegExtractAudio',
        'preferredcodec': 'mp3',
        'preferredquality': '192',
    }],
}
if __name__ == "__main__":
    with youtube_dl.YoutubeDL(ydl_opts) as ydl:
        filenames = sys.argv[1:]
        ydl.download(filenames)

 

 

 

# youtube-dl --list-subs https://www.youtube.com/watch?v=T2DbiZFmFH8
# youtube-dl --write-sub --sub-lang ko --skip-download -o subtitle https://www.youtube.com/watch?v=T2DbiZFmFH8
# youtube-dl --write-auto-sub --sub-lang ko --skip-download -o subtitle https://www.youtube.com/watch?v=T2DbiZFmFH8