METHOD FOR ESTIMATING THE TYPE OF THE GROUP OF PICTURE STRUCTURE OF A PLURALITY OF VIDEO FRAMES IN A VIDEO STREAM

摘要

The present invention provides a method for estimating the type of a group of pictures (GoP) of a plurality of video frames by estimating a frame type of a plurality of video frames in a video stream, the method comprising: a) Collecting a bit frame size of all video frames subsequent to an I-frame that is the first intra-frame to obtain an array of frame sizes by utilizing a characteristic of a transport layer that is a transport layer; b) following a plurality of frames, converting the array of frame sizes obtained in step a) into a plurality of 0's and a plurality of 1's arrays, wherein 0 is a small frame size estimated to represent a B- , Where 1 represents a large frame size estimated to represent a P-frame which is a predicted frame; c) matching the frame size of the binarized array obtained in step b) with a plurality of predefined short basic binary patterns, comprising a specific repeating short basic pattern characteristic of the GoP structure to be analyzed, A predefined pattern of binary numbers representing all of the GoP structures under consideration; d) transforming said matching result in step c) to form a single score value; e) determining a particular pattern of the number of binary predefined patterns having an optimal score value according to a predefined measurement.