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US09036698B2 Method and system for rate control during video transcoding 有权
视频转码过程中速率控制的方法和系统

Method and system for rate control during video transcoding
Abstract:
A local system encodes previously decoded video data using a transcoding quantization value based on a source quantization value provided by a previous encoder as part of the retrieved video data. The transcoding quantization value can be determined additionally based the fullness of the video buffer of a target system, where a measure of the fullness can be obtained directly from the target system or modeled by the local system. The video data is encoded by the local system and then provided to a target system for decoding and subsequent display and/or storage.
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