Sometimes, callback aren't called

[RedHeadEmile]

Hi! I am developping a little software to edit mp3 tags (with a javaFx interface) and I use your library to download, from youtube, mp3.
And for some reason, the callback isn't always called, I should not say why (I have console debug to see the "progress" variable of the callback) and sometimes the callback is never called even at the end.
I will try to find why in the sources (maybe it's my code).

[KairunHanjun]

Download yt-dlp and change the file name to youtube-dl.