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A method of an RTP-OVER-UDP packet loss and reordering processing mechanism

A processing mechanism and reordering technology, applied in the field of digital video decoding, can solve problems such as long processing time, high algorithm complexity, and increased video playback time delay

Inactive Publication Date: 2019-05-03
CHINA CHANGFENG SCI TECH IND GROUPCORP
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  • Abstract
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Problems solved by technology

[0010] It can be seen that the existing algorithm has high complexity and long processing time, which increases the time delay during video playback

Method used

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  • A method of an RTP-OVER-UDP packet loss and reordering processing mechanism
  • A method of an RTP-OVER-UDP packet loss and reordering processing mechanism

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Embodiment Construction

[0023] Such as figure 1 Shown, the realization process of the present invention is as follows:

[0024] (1) Receive RTP data through UDP.

[0025] (2) Parse the RTP packet sequence number Sequence Number field:

[0026] Define a linked list and a ring buffer, which are used for RTP packet loss, out-of-order processing and storage of data to be sent, that is, data to be demultiplexed / decoded. Among them, the data members of each node of the linked list include RTP data and RTP serial number field (the serial number field is defined as a 32-bit unsigned integer when implementing, indicating that the range of the integer will be greater than 65535), and the RTP serial number can be determined by the corresponding data in the RTP parsed to get. The data buffer to be decoded stores the data after packet loss and out-of-order processing, and the data will be used as the input data of the demultiplexer or video decoder.

[0027] (3) Write the RTP data into the linked list node. ...

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Abstract

The invention provides a method of an RTP-OVER-UDP packet loss and reordering processing mechanism, which comprises the following steps: receiving RTP data through a UDP; Analyzing the serial numberSequence Number field of the RTP packet; Writing the RTP data into a linked list node; Carrying out overflow processing on the Sequence Number value; arranging All RTP nodes in the linked list in an ascending order according to a Sequence Number field in the nodes; Writing the RTP load data with the RTP packet heads removed in the nodes into a to-be-sent buffer area in sequence from the head nodein the linked list; performing Demultiplexing or decoding.

Description

technical field [0001] The invention belongs to the technical field of digital video decoding, and relates to an algorithm for quickly processing RTP-OVER-UDP packet loss and out-of-sequence, which can be used for streaming media customer service terminals. Background technique [0002] In the streaming link of streaming media technology, the RTP-OVER-UDP method is widely used in the LAN environment because of its better network adaptability and transmission efficiency. However, due to the limitations of the UDP protocol itself, when UDP is used to transmit RTP packets, there are problems of RTP packet loss and disorder. If this problem is not dealt with, decoding will occur in the decoder during subsequent processing. Image mosaic or frame drop due to errors. Therefore, corresponding algorithms must be added in the receiving link to solve the problems of RTP packet loss and disorder. [0003] At present, the mainstream algorithm to solve the problem of RTP-OVER-UDP packet...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N21/647H04N21/643H04N21/4402H04N21/434
Inventor 邓华阳陈瑞
Owner CHINA CHANGFENG SCI TECH IND GROUPCORP
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