Distributed video transcoding method applicable to frame rate up-conversion

Abstract

The invention provides a distributed video transcoding method applicable to frame rate up-conversion. Frame information of an input video is read before the video is subjected to transcoding, and available cutting points are determined. According to the frame rate of the input video, the frame rate of an output video, and the length of an image group, the unit length of a fragment is computed, andthen the length of the fragment except redundancy is computed, and according to the distribution of the cutting points of the input video, a cutting scheme with redundancy is determined. After the video is fragmented according to the cutting scheme, the video fragment is decoded and processed in a distributed manner according to an output parameter, and meanwhile, the quantity of redundant videoframes needing to be cut off at the start and end positions of the fragment is computed. The front redundancy and back redundancy of a video stream after processing are cut off according to a computing result, coding is performed and the video fragments are spliced into the complete video code stream according to a time sequence, and then the complete video code stream is multiplexed and packagedwith an audio stream. According to the method provided by the invention, the redundancy is introduced to solve the video quality loss when fragmenting is performed during distributed video transcoding, and meanwhile the distributed frame rate up-conversion transcoding of the image group with the fixed size is achieved.

Description

Technical field [0001] The invention relates to a method in the technical field of video transcoding, in particular to a distributed video transcoding method suitable for frame rate up-conversion. Background technique [0002] With the continuous development of network technology and the continuous improvement of playback terminal performance, video has gradually occupied modern life. Higher-speed networks, larger screens and smarter terminals make video viewing more comfortable. At the same time, users have also begun to put forward higher and higher requirements for the user experience-the quality of watching videos, such as higher frame rate and resolution. [0003] In addition to traditional broadcast television, many video providers also provide online video. Services like OTT and IPTV are gradually becoming popular and have a tendency to replace traditional broadcast TV, because online video services have more convenient and cheaper features and provide a diversified video ...

AI Technical Summary

Problems solved by technology

[0007] Aiming at the defects of existing distributed video transcoding methods, the present invention proposes a distributed video transcoding method suitable for frame rate up-conversion. Considering the loss of video quality that may be caused by video cutting, the design introduces redundant video cutting and transcoding solutions to meet the requirements of time alignment of audio and video before and after distributed transcoding, and lossless video quality at the cutting point

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