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.
The first writable DVD format, DVD-R is a write-once, read-many storage format, similar to CD-R. Book E. The second of the writable DVD formats, DVD-RAM must be handled in special devices, which do not fit into ordinary DVD drives.