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BITRATE OPTIMIZATION FOR MULTI-REPRESENTATION ENCODING USING PLAYBACK STATISTICS
BITRATE OPTIMIZATION FOR MULTI-REPRESENTATION ENCODING USING PLAYBACK STATISTICS
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机译:使用回放统计进行多表示编码的比特率优化
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摘要
Implementations disclose bitrate optimization for multi-representation encoding using playback statistics. A method includes generating multiple versions of a segment of a source video, the versions comprising encodings of the segment at different encoding bitrates for each resolution of the segment, measuring a quality metric for each version of the segment, generating rate-quality models for each resolution of the segment based on the measured quality metrics corresponding to the resolutions, generating a probability model to predict requesting probabilities that representations of the segment are requested, the probability model based on a joint probability distribution of network speed and viewport size that is generated from client-side feedback statistics associated with prior playbacks of other videos, determining an encoding bitrate for each of the representations of the segment based on the rate-quality models and the probability model, and assigning determined encoding bitrates to corresponding representations of the segment.
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