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Information output method and system based on H.265 protocol distributed system

A distributed system and information output technology, applied in image communication, selective content distribution, electrical components, etc., can solve problems such as impact

Active Publication Date: 2020-08-25
上海大因多媒体技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Although the H.265 protocol distributed system will reduce the real-time delay when transmitting information, it takes a certain amount of time to process the signal source in the process of encoding, transmitting, and decoding, and it will still cause more than 80ms when outputting on the back-end splicing screen delay, which will have a great impact on practical applications. For example, when making a video call, two video communication due to the delay caused by the grabbing behavior

Method used

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  • Information output method and system based on H.265 protocol distributed system

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Embodiment 1

[0038] There are many reasons for the delay in the audio and video transmission process. One of the reasons for the delay is the delay caused by the start of the decoder. After the audio and video transmitter receives the first frame image, the filter chart is established and the sender Consistent display time axis, the display time axis will always keep inaccurate with the time axis of the sender in subsequent playback. If the first frame of data has an initial delay, the delay of the first frame of data will be added in a constant form The delay appears in the subsequent pictures, that is, the smaller the initial delay of the first frame of data, the delay of the stream playback will also decrease. However, for H.265 / AVC decoders, this initial delay is much greater than the average decoding delay. The main source of the initial delay is the data positioning delay of the first frame and the decoder initialization delay. Based on this, the present invention proposes an informa...

Embodiment 2

[0045] In the prior art, in addition to the positioning delay of the first frame data generated by the decoder and the initialization delay of the decoder, the quality control message is also prone to delay. Specifically, the decoding in most H.265 protocol distributed systems The decoder supports quality message processing. When the signal data transmission is not ideal, the audio and video transmitter will send a quality message notification to the decoder. When the quality message notification is received too much, the decoder may be actively blocked. Create unnecessary delays. Based on this, the present invention further provides an information output method based on the H.265 protocol distributed system, specifically,

[0046] Such as figure 2 As shown, in step S210, the conversion filter is configured to accept data packets in a preset parameter notification state, and the conversion filter discards the data packets matching the preset parameter notification. Among them,...

Embodiment 3

[0055] On the other hand, the present invention further provides an information output system based on the H.265 protocol distributed system, in which,

[0056] The source filter is used to receive the video stream data sent by the sending end in the activated state, and read the current image information parameters in the video stream data;

[0057] The first frame data forming unit forms the first frame data based on the video stream data matching the current image information parameters in a state where the current image information parameters match the preset image parameters;

[0058] The filter chart forming unit is used to establish a filter chart in a state where the first frame data is acquired, and output audio and video data information matching the first frame data to the decoder.

[0059] As a further preferred embodiment, the above-mentioned information output system based on the H.265 protocol distributed system, which further includes:

[0060] The conversion filter, whe...

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Abstract

The invention belongs to the field of audio and video transmission control. The invention relates to an information output method and system based on an H.265 protocol distributed system. The information output method based on the H.265 protocol distributed system comprises the following steps: in a state that a source filter is activated, receiving video stream data sent by a sending end, and reading current image information parameters in the video stream data; in a state that the current image information parameter is matched with a preset image parameter, forming first frame data based onthe video stream data matched with the current image information parameter; and establishing a filter chart in a state of obtaining the first frame data, and outputting audio and video data information matched with the first frame data to a decoder.

Description

Technical field [0001] The invention belongs to the field of audio and video transmission control, and relates to an information output method and system based on an H.265 protocol distributed system. Background technique [0002] The existing information is transmitted through the distributed system of the H.265 protocol. H.265 is the ITU Video Coding Expert Group following H.264 (H.264 is a joint proposal by the International Organization for Standardization and the International Telecommunication Union following MPEG4 (dynamic The next generation of digital video compression format after the image standard), H.264 is also the tenth part of MPEG-4. It is a highly compressed digital video proposed by the Joint Video Group composed of the ITU Video Coding Expert Group and the Moving Picture Expert Group. Codec standard.) A new video coding standard formulated later. [0003] Although the H.265 protocol distributed system will reduce the real-time delay when transmitting informatio...

Claims

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Application Information

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IPC IPC(8): H04N21/234H04N21/2343H04N21/44H04N21/4402
CPCH04N21/23418H04N21/234309H04N21/44008H04N21/440218
Inventor 袁永平杨顶东朱龙龙李金凯刘加洋
Owner 上海大因多媒体技术有限公司
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