Digital Video Data Sizing

Data Rate.

• The rate at which information being transferred.
• expressed in {amount of information} per {unit of time}

How to calculate a uncompressed Digital video.

formula = frame size(width and height) * frame rate(fps) * color depth(in bytes) * time(in seconds)

8 bits = 1 byte

1 kilo(bit/byte) = 1,024 (bits/bytes)

1 Mega(bit/byte) = 1,048,576 (bits/bytes)

1 Giga(bit/byte) = 1,073,741,824 (bits/bytes) How to calculate uncompressed Audio File. 8-bit mono Seconds x kHz = Size 16-bit mono (Seconds x kHz) x 2 = Size 8-bit stereo (Seconds x kHz) x 2 = Size 16-bit stereo ([Seconds x kHz] x 2) x 2 = Size 16-bit 5.1 ([Seconds x kHz] x2) x 6 = Size Factors to consider when selecting graphics to be used in a multimedia project: a)  Purpose:       - Avoid using images for “filler” or when they have little in common with the overall         message or purpose.     - A common mistake is to trivialize products with cartoons that can be distracting to the         viewer.       - If multiple images are used, make sure they reflect a common message such as providing the user with an example or an illustration. b)   Quality:        - Any image used in a multimedia product should reflect the overall quality desired of          the entire product.        - The image colour depth has to be considered, especially for applications that will be          displayed on systems using a lower colour capability. c)   Cost:        - The cost of a graphic is directly related to its purpose and quality.        - Copyright and ownership of graphics will determine who is to be paid