Smart Bitrate Control

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Smart Bitrate Control (SBC) was a technique for achieving greatly improved video compression efficiency using the DivX 3.11 Alpha video codec or Microsoft's proprietary MPEG-4v2 video codec and the Nandub video encoder. SBC relied on two main technologies to achieve this improved efficiency: multi-pass encoding and Variable Keyframe Intervals (VKI). SBC ceased to be commonly used after XviD and DivX development progressed to a point where they incorporated the same features that SBC pioneered^{[citation needed]} and could offer even more efficient video compression without the need for a specialized application. Files created by SBC are compatible with DivX 3.11 Alpha and can be decoded by most codecs that support International Organization for Standardization (ISO) MPEG4 video.^{[citation needed]}