Bitrate, sometimes written bit rate or data rate represents the number of bits processed pe unit of time. Bitrate is quantified as the bits per second or bps, usual in a conjunction with a metric prefix (kilo, mega, giga, tera). 1kilobit per second (1kbit/s) is defined as 1000 bit/s not 1024 bit/s as iti is in the most of other related computer units.