High definition uses more data to create pictures rather than standard definition. high definition is around five times more of the data rather than standard definition which is lower. With the fact that there is more data in high definition means there are more pixels to create a much better image!
In Europe 16:9 aspect ratios were introduced in the early 1990s. HD televisions are always 16:9 but there is no standard for 4:3 ratio when using high definition.
Standard definition resolutions are: 720x576 with 4:3 aspect ratio or 16:9 aspect ratio.
High definition signals are: 1920x1080 pixels with 16:9 aspect ratio.
Aspect ratio is an image projection that describes the relationship between the width and height of an image. For example there are movies which are shot with wide angle lenses with the aspect ratio of 16:9. This means the width of the image area will be twice the size of its height. 4:3 ratio means that the image is 4 units by 3 units high.
PAL is short for phase alternating line. It is a video format used in television transmission used in most of Europe except for France, Bulgaria, Russia and some other countries. NTSC is short for National television standard commitee. It sets the standard for analog televisions in the United States. It has been used in other countries as well as Japan. SECAM is short for sequential colour with memory and it is a analog television system.
In motion pictures, television and in video game displays, frame rate is the number of frames or images that are displayed per second.
A tape drive is the thing that drives the tape around originally with a hard disk. Nowadays the drive is built in so a hard disk drive is referring to the disk and the drive. The main difference is the fact that hard drive has more capacity to store more data in it.
Digital broadcasting is standard broadcasting which was produced since two years ago, 10 years ago it was for satellite and cable.
Video editing software is where people can upload videos onto their computer and edit them with softwares such as final cut pro or windows movie maker.
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