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.
Dual-layer, double-sided DVDs offer 17GB of data: eight hours of DVD video, 22 hours of VHS video, 24 hours of CD-quality audio and 240 hours of MP3 audio. Caution PC World reports that in some cases, the stated maximum capacity for DVDs may not be exactly what you receive because some DVD manufacturers use different standards to define their capacities.