Variable bit rate

From Free net encyclopedia

Variable bit rate (VBR) is a term used in telecommunications and computing that relates to sound or video encoding. As opposed to constant bit rate (CBR), VBR files vary the amount of output data per time segment. VBR allows a higher bit rate (and therefore more storage space) to be allocated to the more complex segments of sound files while less space is allocated to less complex segments. The average of these rates is calculated to produce an average bit rate for the file that will represent its overall sound quality.

MP3, WMA, Vorbis, and AAC files can optionally be encoded with VBR.

See also

• Average bit rate
• Constant bit rate

de:Variable Datenrate

es:Bit rate variable fr:Variable bit rate pl:Zmienna przepustowość zh:可变码率