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.
At these file sizes, a DVD-R can hold about 2,200 pictures or around 1,100 MP3 files. Thatâs good for a disc, but itâs pretty mind-boggling when you look at how much more a Blu-ray disc holds. With a 25GB capacity (or 25,600 MB), a Blu-ray disc can hold up to 11.6 hours of DVD quality video. Thatâs over 9 hours more video on a Blu-ray disc than on a DVD disc at the same level of quality. Of course, most folks use Blu-ray discs for their intended purpose: high definition video.