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.
DVD-R and DVD+R are two competing recordable DVD formats. DVD-R was introduced in 1997, and DVD+R arrived in 2002. The two formats are incompatible with each other. You can not burn DVD dash discs using DVD+ drives, and vice versa, although dual format burners are available. The developers DVD+R have positioned it as a format superior to DVD-R. The major difference is the addressing system, which refers to the way the laser finds the proper position for data to be written.