There is an error in some videos.

[yyms3275]

I am using the library well, but the YouTube video below does not play.

https://www.youtube.com/watch?v=h84I1JGX9ws

[nhCoder]

This is because The uploader has not made this video available in your country.

[nhCoder]

You can either use a proxy in your app...

[yyms3275]

You can either use a proxy in your app...

As a result of checking, it seems that the setting according to the location does not matter, and I found one difference. That is, the procedure of adult authentication is established only in the video above. If this is the case, is there any way to solve it in the library?

[nhCoder]

If the issue is with age restriction use useDefaultLogin() before Extract() to extract urls for age restricted videos.Take a look at readme at the bottom of the page