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Encoding and transmitting image frames of video stream

A technology of image frames and video streams, applied in image communication, transmission systems, digital video signal modification, etc., and can solve problems such as inflexibility

Pending Publication Date: 2021-06-01
AXIS
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, such chunks are inflexible and provide only limited options for where to start playback

Method used

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  • Encoding and transmitting image frames of video stream
  • Encoding and transmitting image frames of video stream
  • Encoding and transmitting image frames of video stream

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Embodiment Construction

[0051] The present invention will now be described more fully hereinafter with reference to the accompanying drawings, in which presently preferred embodiments of the invention are shown. However, this invention may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided for thoroughness and completeness, and will fully convey to those skilled in the art convey the scope of the invention.

[0052] figure 1 The flowchart of FIG. 2 provides steps of a method for encoding and transmitting a plurality of image frames 110 of a video stream 100 . The method includes performing intra-refresh coding on a plurality of image frames 110 S1002. The method further includes encoding S1004 one image frame 111 of the plurality of image frames 110 to generate encoded image data of the one image frame 111 , the encoded image data being organized in a plurality of data packets 113 . Encoding include...

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Abstract

There is provided a method for encoding and transmitting a plurality of image frames (110) of a video stream (100), the method comprising intra refresh encoding the plurality of image frames; encoding one image frame (111) of the plurality of image frames to produce encoded image data of the one image frame, the encoded image data being organized in a plurality of data packets (113), wherein the encoding comprises intra frame encoding the one image frame; transmitting, over a time period (120), the intra refresh encoded image frames; transmitting the plurality of data packets, wherein the transmission of the plurality of data packets is distributed over the time period during which the intra refresh encoded image frames are transmitted. An interrelated method for receiving and storing the plurality of image frames, as well as devices and computer program products for performing the methods, are also provided.

Description

technical field [0001] The invention relates to a method and a device for encoding, transmitting and storing image frames of a video stream. In particular, the present invention relates to methods and devices in which the encoding involves intra-refresh encoding. Background technique [0002] A common problem with H.264 encoding (and similar standards) is intra-frame (I-frame) bitrate spikes. Due to the large number of cameras that can be connected and used together in a network, and because a typical surveillance camera scene has a very large (x10-x100) I-frame to predicted frame (P-frame) size ratio, this problem is especially important for surveillance cameras. Said is usually more serious. Ideally, a constant bit rate would be preferred from a network point of view. One solution for reducing the bitrate spikes of the camera is to spread the I-frame over multiple image frames, and instead have a part of each image frame (the intra-refresh region) be forced to be coded ...

Claims

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Application Information

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IPC IPC(8): H04N19/172H04N19/159H04N19/70H04N19/42H04L47/32
CPCH04N19/172H04N19/159H04N19/70H04N19/42H04N19/107H04L47/32
Inventor 维克托·埃德帕尔姆玛雅·沙阿
Owner AXIS
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