Videos Ls How Do I Edit The Size Of My Videos (L X W) Before Uploading It?

How do I edit the size of my videos (L x W) before uploading it? - videos ls

I make my videos in 640 x 480 (SD), but it is his way, extending up to 1280 x 720 are considered high-definition HD video without really? If this is not the meeting for you, just not realistic in the 1280 "x 720".