not recording internal sound in real device like youtube,sportify

[prashanttechnoyuga]

I want to record internal sound of mobile device like youtube, sportify.

its recording in simulator. but not in real device.

video link :- https://drive.google.com/file/d/1jCgBOzzajvqdfaJD93Bw6FmsKRqZvUMh/view?usp=sharing