Variable bitrate (VBR) is a video encoding method that adjusts the bitrate according to the complexity of the video scene. The primary advantage of VBR is that it maintains image quality, even in high-motion scenes, by allocating more bitrate when needed and reducing it during simpler scenes. This ensures consistent image quality while optimizing the use of bandwidth. Axis Communications’ documentation on video compression and bitrate management confirms the benefits of VBR in maintaining image quality.
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