How to add subscribe button in the whole video so follow me step by step..you will get your subscribe button in the corner of your video.
Step 1 :- Download the subscriber button image from google..and it should be having a .png extension.
Step 2 :- Login to your youtube channel.
And click on create studio.
Step 3 :- After this click on a channel in the sidebar and choose branding.
Step 4 :- Select the add watermark option.
Step 5 :- Upload a subscribe button image.
Step 6 :- NOw choose the display time and click on update...Its all done
Now check your youtube videos it will show the button in the bottom of the right corner...