You Can manage (edit and delete) Imported Videos and Add New Videos From Youtube and DailyMotion Search Page.

Button Description
Need Review Videos : all videos that are imported but not published you have the choice to publish it or delete it.
Deleted Videos : all deleted videos. deleted videos are hidden but still exist in database. script keep them in database in order to not import them again.
Search and Import Videos.
Search and Import Videos.

To search for videos in YouTube and DailyMotion you must enter the Search word and Select the Category to Save Video in.

When you delete Video, it still stored in database but hidden in Front-End.
Script keep it in database to prevent importing it again.