What is video scanning?
Video scanning is used by video displays to draw a picture on the T.V screen. There are two methods that are used to do this.
What is interlaced video scanning?
Interlaced video scanning is used for displaying alternating sets of lines. Even numbers are displayed before the odd numbers. Even lines are displayed for 1/60th part of a second. And then 1/60th of a second for the odd number. This gets repeated again and again. Every odd-numbered and even-numbered line series that are displayed is called a “field”. Since this field happens rapidly it gives an illusion of a whole image. But we are presented with the first half of the image and then quickly it shifts to the second half of the image. Since you are only capturing only half of the image at a time, the movement within the frame will cause motion artifacts. It is something that happens when the movement is quick enough to cause noticeable different positions in the field. This is frequently represented using the letter ‘i’, (1080i).
What is progressive video scanning?
Progressive video scanning captures one entire image during the 1/60 part of the second. The images are more detailed therefore it is used in high-end televisions and computer monitors. This means you don’t have to worry about the motion artifacts. It is not a part of mainstreaming because it is expensive. There is only a limited reasonably and affordable camera for independent filmmakers. You have the option to buy a Panasonic AG-DVX100 and Canon XL-2 that are some of the affordable cameras that shoot a progressive video. Desired by most of the independent filmmakers because it resembles the look of a film. It results in a clearer image and handles the movement differently. This is frequently represented by the letter ‘p’, (1080p).