Constant Bit Rate: (CBR) Used to describe in telecommunications an encoding method where the bit rate remains constant. A method that keeps the bit rate the same as opposed to Variable Bit Rate: (VBR) which varies the bit rate. CBR processes audio and video faster than VBR due to its fixed bit rate value. The downside to a fixed bit rate is that the files that are produced are not as optimized for quality vs. storage as VBR. The quality level will vary based on the complexity of the image, leading to lower quality with images with more detail and movement.