Video bitstream frame extraction process and device

A frame processing and code stream technology, which is applied in the field of frame extraction processing of video code streams, can solve the problems of limited decoding performance and difficulty in effectively improving playback speed, and achieves the improvement of playback speed, playback speed and decoding performance. Effect

Active Publication Date: 2015-05-20
HANGZHOU HIKVISION DIGITAL TECH
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Problems solved by technology

[0004] The present invention provides a frame extraction processing method and device of a video code stream to at least solve the problem in the related art that it is difficult to effectively improve the playback speed due to the limited decoding performance of the NVR during high-speed playback in the related art

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  • Video bitstream frame extraction process and device
  • Video bitstream frame extraction process and device
  • Video bitstream frame extraction process and device

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Embodiment Construction

[0022] Hereinafter, the present invention will be described in detail with reference to the drawings and examples. It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other.

[0023] In the following description, unless indicated otherwise, various embodiments of the present application are described with reference to acts and symbolic representations of operations that are performed by one or more computers. Among them, computers include various products such as personal computers, servers, and mobile terminals, and devices that use processing chips such as central processing units (CPUs), single-chip microcomputers, and digital signal processors (DSPs) can all be called computers. It will thus be appreciated that such acts and operations, which are sometimes referred to as computer-implemented, include the manipulation of electrical signals representing data in a structu...

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Abstract

The present invention discloses a video bitstream frame extraction process and device. The aforementioned process comprises receiving and storing video bitstreams from an IPC; and during playing back the stored video bitstreams, conducting an SVC frame extraction process on the stored video bitstreams, wherein the frame extraction multiple used in the SVC extraction process is dynamically adjusted according to a playback rate selected by a user. According to the technical solution provided in the present invention, the process and device effectively improve the speed for playing video bitstreams during a quick playback process.

Description

technical field [0001] The invention relates to the field of network video monitoring, in particular to a frame extraction processing method and device for a video code stream. Background technique [0002] At present, the main function of a network video recorder (NVR for short) in the related art is to receive, store and manage digital video streams transmitted by network surveillance camera (IPC) devices through the network. When the NVR establishes a connection with the IPC to receive the digital video stream transmitted by the IPC, it needs to occupy a certain amount of disk space, and video recording is performed according to a specific bit rate, frame rate and image size, and the number of days that can be saved is fixed. of. [0003] However, as video surveillance technology is gradually moving towards high-definition, it is difficult to effectively increase the playback speed due to limited decoding performance during high-speed playback. In addition, when playing...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N21/2343H04N21/274
CPCH04N21/234381H04N21/274
Inventor 张超余家骝张小媛
Owner HANGZHOU HIKVISION DIGITAL TECH
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