Generation method, system and multimedia device for fast forwarding and rewinding video file

Abstract

The present invention is suitable for field of video technique, and provides a method for generating fast forward and fast rewind document, a system and a multimedia device thereof. The method comprises the following steps: obtaining key frames of equal-interval positions, and storing the key frame of first equal-interval position into the fast forward and fast rewind document; obtaining the prediction frames of equal-interval positions from the second equal-interval position; comparing the prediction frame with the key frames of equal-interval positions from the second equal-interval position; when the data volume of prediction frame is less than or equal to the data volume of key frame, storing the prediction frame into the fast forward and fast rewind document; or storing the key frame into the fast forward and fast rewind document. According to the invention, the key frames of equal-interval positions of source video document are extracted. Furthermore the prediction frames of equal-interval positions from the second equal-interval position are obtained. Data volume magnitude comparison is executed to the key frames and prediction frames. The frame with less data volume is stored in the fast forward and fast rewind document. The purpose of browsing the source video document with a same speed is realized and the transmission rate is increased.

Description

technical field [0001] The invention belongs to the field of video technology, and in particular relates to a method, system and multimedia equipment for generating fast forward and backward video files. Background technique [0002] With the continuous development of video technology, it is possible to provide users with multi-fold fast forward and backward browsing, such as 2 times, 4 times, 8 times, etc. When receiving the fast forward and back browsing instructions input by the user, search for the source video file and fast forward and back The multiplier corresponds to the video key frame of the equivariance position, and extracts the key frame, recomposes a new video file, and realizes fast forward and backward browsing of the source video file by playing the new video file. [0003] However, when the frame extracted at the equal difference position of the source video file is a non-key frame, find the key frame closest to the equal difference position, and store it i...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the embodiments of the present invention is to provide a method for generating fast forward and backward video files, which aims to solve the problem that the source video files cannot be browsed evenly in the prior art, there is a certain error in the fast forward and backward of the source video files, and the data volume of the video file is very large. Large, not conducive to the problem of transmission on the network

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