How To Add Download Button In YouTube

STEP-1:-  How To Add Download Button In YouTube" FIRST OPEN CHROME 

STEP-2:- OPEN A LINK: http://addoncrop.com/video_downloader_all_in_one/


 AND YOU GET A NEW PAGE LIKE THIS



STEP-3:- SELECT YOUR BROWSER AND DOWNLOAD A FILE

STEP-4:-AFTER DOWNLOAD A FILE  OPEN EXTENSION MANAGER AND DRAG YOU FULL FOLDER INTO EXTENSION MANAGER.AND YOU GET DOWNLOADER MANAGER

HERE A VIDEO FOR YOU: