Bitrate is a measure of the amount of data transferred per second in a video or audio file. It is typically expressed in bits per second (bps) or kilobits per second (kbps). The bitrate of a video or audio file will affect its quality, with higher bitrates resulting in higher quality but also larger file sizes. Different video and audio formats have different bitrate ranges, and different types of content may require different bitrates to achieve the desired quality. For example, a high-action video may require a higher bitrate than a talking-head video to retain the same level of quality. The optimal bitrate for a video will depend on a number of factors, including the resolution of the video, the content of the video, and the intended use of the video.