- Find your YouTube video and downlaod it using yt-dlp:
yt-dlp -o full_video.mp4 "https://www.youtube.com/watch?v=REPLACE_ME_WITH_YOUR_YOUTUBE_VIDE_ID"
- Convert it to an audio file using ffmpeg:
ffmpeg -i full_video.mp4.webm -vn -acodec mp3 output_audio.mp3
- Upload it to snipd via their upload tool at upload.snipd.com/
Disclaimer: I'm a paying user of snipd but have no affiliations.