Rate-distortion-complexity optimization of video encoding guided by video description length

摘要

A system and method provide a video description length (VDL) guided constant quality video encoding strategy with bitrate constraint and a video coding system for optimizing encoding bitrate, distortion and complexity of an input video. The method obtains an overall VDL, temporal VDL and spatial VDL of the input video and compares the overall VDL, temporal VDL and spatial VDL of the input video with a reference VDL, temporal VDL and spatial VDL. Based on the comparison, the method adjusts the encoding bitrate, the overall encoding complexity, temporal encoding complexity and spatial encoding complexity of the input video and encodes the input video with the adjusted encoding bitrate, overall encoding complexity, temporal encoding complexity and spatial encoding complexity of the input video.

主权项

1. A computer system for optimizing encoding of an input video, the system comprising:
a computer processor for executing computer program instructions; and a non-transitory computer-readable storage medium storing computer program instructions executable for:
obtaining an overall video description length (VDL), a temporal VDL and a spatial VDL of the input video, the overall VDL of the input video indicating overall content complexity of the input video, the temporal VDL of the input video indicating temporal complexity of the input video, and the spatial VDL of the input video indicating spatial complexity of the input video;comparing the overall VDL, the temporal VDL and the spatial VDL of the input video with a corresponding reference overall VDL, reference temporal VDL and reference spatial VDL; andadjusting an encoding bitrate, an overall encoding complexity, an temporal encoding complexity and a spatial encoding complexity of the input video based on the comparisons.