Use a separate file to record already downloaded URLs

youtube-dl --download-archive archive.txt ""

Read URLs from a file (one URL per line)

youtube-dl -a links.txt

Write description to a file

youtube-dl --write-description ""

Embed subtitles

youtube-dl --all-subs --embed-subs ""

Write thumbnail

youtube-dl --write-thumbnail ""

Extract audio from a video (and convert it to mp3)

youtube-dl --format 'bestaudio/best' --audio-format 'mp3' ""

Download a video and convert it to mp4

youtube-dl --format 'bestvideo+bestaudio/best' --recode-video 'mp4' ""

Have fun and be responsible 🤺