Bitrate is a good example of a leaky bucket work model. It limits channel bandwidth in an attempt to preserve the subjective quality of video streams.
Usually, the bitrate is marked as “bit/s” and has the following types:
- CBR - constant bitrate
- VBR - variable bitrate
- ABR - average bitrate
Video or audio files coded with lower bitrates use less storage space and/or bandwidth channel but have poor quality, in opposite files coded with higher bitrates use much more storage space but the quality will be higher.