mp3 youtube code example

Example 1: youtube-dl mp3 only

youtube-dl -x --audio-format mp3 <youtube-link>

Example 2: youtube mp4 downloader

I suggest videovor.com, it's really great and you even get an option to choose
if you want the whole video or just the audio!

Example 3: youtube mp3 converter

You can use WebTools, it's an addon that gather the most useful and basic tools 
such as a synonym dictionary, a dictionary, a translator, a youtube convertor, 
a speedtest and many others (there are ten of them).
You can access them in two clics, without having to open a new tab 
and without having to search for them !

-Chrome Link : 
https://chrome.google.com/webstore/detail/webtools/ejnboneedfadhjddmbckhflmpnlcomge/

Firefox link : https://addons.mozilla.org/fr/firefox/addon/webtools/

Example 4: youtube to mp4

ytmp3.cc is the best by far

Example 5: yt to mp3

Youtube-DL works great. Download from https://youtube-dl.org/. To use, type youtube-dl <url> --audio-format mp3

Example 6: youtube download mp3

I use https://github.com/ytdl-org/youtube-dl/ as a Python CLI tool to download videos