What is the best YouTube to MP3 Converter?

Try NoTube.fr
It's a french one but a really good one !!

in the old days I could convert so many files... I don't do that anymore, so I can't help

https://ytmp3.cc/youtube-to-mp3/ is great

In my opinion, 4k video downloader, it seems very sketchy at first, but it works perfectly, and has several options like "audio only" and the quality of the audio, as an extra it too can download videos.

dude definitely https://ytmp3.cc/ its one of the fastest and easiest to use imo i use it all the time 100 percent reccomend

best to just use youtube-dl imo

Is the video converted to MP4? That might be the reason. It also depends on what kind of converter you've used. Many of them add irrelevant stuff to the video, that causes bugs. Usually, those are the downloaded ones. That's why I choose to use online converters, such as https://convertr.org/avi-to-mp4. I never had any problems with online converters. Also, another cause would be how you added the MP4 to the video itself. I don't know if you're aware, but there are different ways you can do this. I usually just go to tools and then add, but many choose to complicate things, and it turns out like this, lol.

i personally use loader.to

lol i literally just write on google "yt to mp3"

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lol i literally just write on google "yt to mp3"

deemix-gui, connected to spotify, or youtube music probably is better.