You may feel these symptoms first in your feet and then possibly in your shins: 1  Numbness, tingling and pain. 2  Unsteady when standing, walking. 3  Muscle weakness (including weak ankles) or cramps.
720HD is 1280 x 720 pixels per frame. The highest resolution that the DVD format can support is 720 x 480 pixels per frame for NTSC (or 720 x 576 pixels per frame for PAL), which is at best only 37.5% of the resolution of 720HD.
1080p resolution (also called high definition) is what is possible on the Blu-ray Disc format. Compared with DVDâs 480p resolution. To break it down further, you get 1920Ã1080 pixels on a Blu-rayâthatâs 2,073,600 pixels. DVD delivers just 345,600 pixels in America.