720p

720p is the a video signal standard for HD television. The image consists of 720 vertical lines with 1.280 pixels in each line. This signal has an image quality which is 2 times sharper than a standard tv signal. The ‘p’ in 720p stands for ‘progressive’ which implies that in each image refresh cycle all the 720 lines of the image will be updated.

The progressive screen update offers much better images when quickly moving objects have to be displayed. Other well known HD video formats are 1080i and 1080p.

An interesting article to read maybe 720 > 1080