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Video code stream error detecting and processing method in video communication

A video communication and error detection technology, applied in the field of image information transmission and processing, can solve problems such as the degradation of decoded image quality, and achieve the effect of strong anti-interference ability, recovery ability, and high speed.

Active Publication Date: 2008-04-02
ZTE CORP
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AI Technical Summary

Problems solved by technology

[0009] The technical problem to be solved by the present invention is to provide a video code stream error detection method in the video communication process, which can solve the problem of decoding image quality degradation caused by data loss or damage caused by channel errors and channel congestion in the video communication process. Data loss in transit is quickly detected, allowing error recovery to be managed with short feedback delays

Method used

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  • Video code stream error detecting and processing method in video communication
  • Video code stream error detecting and processing method in video communication
  • Video code stream error detecting and processing method in video communication

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Embodiment Construction

[0023] The invention proposes a fast error detection and processing method based on data index.

[0024] As shown in FIG. 3 and FIG. 4 , when the terminal 1 performs encoding, an index between the data transmission packet number and the encoded image information is established. When encoding a frame of image, part or all of the area on the image is encoded into a data packet, and then the data packet is sent to the receiving end. There is a corresponding relationship between this data packet and the frame number of the image and the corresponding coding area in the image. When establishing an index between the data transmission packet number and the encoded image information, the transmission packet number may be the RTP packet number, the data frame number, or other encoding information from which the RTP packet number and the data frame number can be calculated. For convenience, the RTP packet sequence number is used as an example to represent the sent data identification n...

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Abstract

A method for detecting and processing error of video code flow in video communication, to establish index between transmission data identifier and corresponding encoding image information for encoding code flow; to detect the integrality of transmission data identifier on network transmission node, if detecting losing data, then to transmit the corresponding error data identifier to video encoding end through feedback channel; the video encoding end searches the corresponding image encoding information according to the transmission data identifier received from the feedback channel; the encoding end implements encoding with error or transmits the data again based on the corresponding image encoding information. The present invention can find error within a small feedback time delay, and implement error recover processing to the error video code flow, so as to recover the damaged image quality of the video encoding end with maximal speed, also the present invention has very strong anti-jamming and recover capability to video transmission error code as well as package-losing.

Description

technical field [0001] The invention belongs to the field of image information transmission and processing, and in particular relates to video code stream error detection. Background technique [0002] With the development of wired broadband network and wireless network and the drive of user needs, multimedia technology and related applications have received more and more attention, and are considered to be one of the mainstream applications of high-speed networks in the future. Compared with traditional Internet applications such as WWW and E-mail, multimedia applications, especially video applications, have stricter real-time requirements and greater bandwidth requirements. Since most video applications use high-compression encoding technology, the requirements for transmission errors are particularly stringent, but wired or wireless networks do not provide QoS (Quality of Servers) guarantees for transmission, so video applications can improve their resistance to transmiss...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N7/64H04L29/06H04N19/89
Inventor 陈睿王志英王宁戴志军
Owner ZTE CORP
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