Video encoding method and video encoder configured to perform method

A video encoder and video coding technology, applied in digital video signal modification, image communication, electrical components, etc., can solve the problems of sudden increase of I-frame bit rate and far too much information
CN112672148AActive Publication Date: 2021-04-16AXIS
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
AXIS
Publication Date
2021-04-16

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Abstract

The invention relates to a video encoding method and a video encoder configured to perform the method. The video encoding method is used for encoding a series of images of original video data into an encoded video stream. The video encoding method comprises setting a periodic intra refresh pattern for the encoding of the series of images of original video data; setting a number of delta frames to be added between consecutive intra refresh frames of the periodic intra refresh pattern, thereby adjusting the intra refresh periodicity of the encoded video stream; and encoding the series of images of original video data into the encoded video stream using the set periodic intra refresh pattern and the set number of delta frames to be added between consecutive intra refresh frames. During the encoding, a current intra refresh frame is set to directly refer to a previous intra refresh frame. During the encoding, each delta frame added in between two consecutive intra refresh frames is set to only refer to a previous one of the two consecutive intra refresh frames.
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Description

technical field

[0001] The present invention relates to a video encoding method for encoding a sequence of images in raw video data into an encoded video stream. A video encoder configured to perform the video encoding method is also provided. Background technique

[0002] A common problem with video coding using the H.264 coding standard (and similar standards) is the I-frame bitrate burst, which stems from the fact that much more information is included in the infoframe than in the P-frame and / or B-frame information included. This problem is especially true for network surveillance cameras configured to transmit encoded video streams over a network, especially when several cameras are deployed on the same network. Ideally, networks would prefer to have a constant bit rate.

[0003] One solution to reduce bitrate burst is to distribute I-frames across multiple image frames, and instead force a portion of each image frame (intra-refresh region) to be encoded as an I-block...

Claims

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