What to do if the YouTube video is black on the browser after clicking the “download” button?
If you meet the problem that the YouTube video displays in black after clicking the “download” button, please put your chome browser open and hold on “ctrl+shift-delete" to get the windows “Clear Browsing data”. Click "Advanced", select all browsing data and click “Clear Data” to delete them all. Then, try again. It can work now.