Method, device and system for transmitting video data

A technology of video data and data, applied in the field of communication, can solve the problems of inability to guarantee the transmission quality of video data, inability to obtain reconstructed video data, not adopting anti-packet loss processing strategy, etc., to achieve significant economic benefits, improve transmission quality, and optimize The effect of user experience

Inactive Publication Date: 2008-04-23
HUAWEI TECH CO LTD
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  • Abstract
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Problems solved by technology

[0010] However, in the above video data transmission process, the anti-packet loss processing strategy is not adopted
In this way, when packet loss occurs, it is likely that the receiving end will not be able to decode, so that t

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  • Method, device and system for transmitting video data
  • Method, device and system for transmitting video data
  • Method, device and system for transmitting video data

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Embodiment Construction

[0051] In the specific implementation process of the present invention, it is mainly to solve the problem of video data transmission quality in network environments with packet loss problems such as IP networks and wireless networks, that is, to overcome the adverse effects of packet loss in the network on video data transmission. .

[0052] The implementation methods for overcoming packet loss specifically adopted in the present invention are: interleaving technology and FEC (Forward Error Correction Coding, Forward Error Correction) technology.

[0053] Among them, the interleaving technique is to change the transmission order of the encoded video data so that the video data adjacent in the original time are no longer adjacent in time, that is, the video data adjacent in the transmission order are not adjacent in time and space. are no longer adjacent, thereby reducing the correlation between adjacent data in the sending order. In this way, if packet loss occurs, since the ...

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Abstract

The invention includes following steps: first, carrying out compressed encoding process for video data to be transmitted so as to obtain multiple data blocks after encoding process; then, carrying out error correction coding process for the said multiple data blocks to obtain corresponding checking blocks; finally, carrying out interlacing process for the said data blocks and the checking blocks, as well as packing, packaging, and transmitting the interlaced data blocks and checking blocks. In the invention, since it is lower correlativity between data blocks packaged in same or successive interlaced data packets, thus even if packet loss occurs in the transmission, the possibility that the receiving end is unable to decode the received data is reduced greatly. The invention raises quality for transferring video data through IP network, wireless network etc, where packet loss exists.

Description

technical field [0001] The invention relates to the technical field of communication, in particular to an implementation scheme of video data transmission. Background technique [0002] With the rapid development of mobile communication systems and IP networks, video communication is gradually becoming one of the main services of communication. ITU-T (International Telecommunication Union) has formulated video compression standards such as H.261, H.263, H.263+ and H.264. Wherein, the H.264 video compression coding standard has gradually become a mainstream standard in multimedia communication. The H.264 standard can more effectively improve video coding efficiency and its adaptability to networks. [0003] Since on the IP network, corresponding multimedia real-time applications such as video and audio are basically transmitted using the RTP protocol, therefore, when data based on encoding standards such as H.264 is transmitted on the IP network, RTP (real-time transport p...

Claims

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Application Information

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IPC IPC(8): H04N7/26H04N7/64H04L29/06H04N19/166H04N19/174H04N19/89
Inventor 宋彬郭春芳秦浩罗忠
Owner HUAWEI TECH CO LTD
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