You should realize that webm is just the container and not the audio format (like mp3). The audio format for a webm file from YouTube is most likely going to be opus, though technically it could be vorbis (vorbis is often named with the .ogg extension rather than .vorbis ; in reality both opus and vorbis are ogg formats though).

YT Saver is an all-in-one video downloader and converter supporting 10,000+ sites. Choose from 20+ output formats, download videos in resolutions up to 8K, and grab MP3 music up to 320kbps quality. Download the software here.
The YouTube to MP3 converter accesses the video data of your input URL. Next, the converter separates the audio track from the video. Imagine this as a process of deconstructing a sandwich, where you keep the pickles and mayonnaise (the audio), but discard the bread and meat (the video).
MP3 isn't typically a downloadable format on YouTube. If you want MP3, you will have to convert to it. Yes, those command would extract the audio and convert it to MP3. But also use the quality option I recommended to convert to the highest VBR possible.
When it's done you can just hit ⬆️ on your keyboard to get the command you just ran, erase the youtube url and paste another video in there. Same thing with playlist, just put the link there instead of the video and hit enter. You can also paste in two youtube urls in one command. profit?
. 235 233 98 400 273 181 326 271

convert youtube playlist to mp3 reddit