What is bitrate in video?

Bitrate measures how much data is allotted to each second of video, commonly written in kilobits or megabits per second (kbps or Mbps). It is one of the biggest levers on visual quality: more bits per second let the encoder preserve fine detail, gradients, and fast motion, while too few bits force aggressive compression that shows up as blocky artifacts, banding, or smearing. Bitrate is distinct from resolution — a 1080p clip can look poor at a low bitrate and excellent at a high one — so both settings work together to determine how a video looks.

There are two main approaches: constant bitrate (CBR), which holds a fixed data rate throughout, and variable bitrate (VBR), which spends more bits on complex, high-motion scenes and fewer on simple, static ones. VBR usually delivers better quality for a given file size, which is why it is common in exports and downloads, while CBR is favored for live streaming where a predictable rate matters. Choosing a bitrate is always a balance between visual fidelity, file size, and the constraints of the platform you are uploading to.

Limelight exports clean mp4 files at sensible quality settings, so screen recordings stay sharp — important because UI text, thin lines, and crisp edges reveal low-bitrate compression quickly. Since Limelight footage often features fine detail and smooth cursor motion, a reasonable bitrate keeps everything legible without bloating the file. The result is video that looks professional on export and uploads cleanly to the web without visible artifacts.