A method for judging packet loss fault of mpeg2-ts/udp/ip code stream

Abstract

The invention discloses an MPEG2-TS / UDP / IP code stream packet loss fault determination method. The method comprises the following steps: capturing MPEG2-TS / UDP / IP data streams on an intermediate point of an IPTV network by a collection device; carrying out protocol analysis on the MPEG2-TS data streams, detecting a continuity counter CC field of a TS packet header, and calculating the total TS packet loss number Nt caused by every CC error event in the case of occurrence of the CC error events; if Nt is an integral multiple of 7, adding 1 to the counting A of a network packet loss event counter, and otherwise, adding 1 to the counting B of an IPTV platform packet loss event counter; if the counting A of the network packet loss event counter is greater than T, determining that IPTV media stream packet loss is caused by an IP network problem, and setting A to be 0; and if the counting B of the IPTV platform packet loss event counter is greater than T, determining that the IPTV media stream packet loss is caused by an IPTV platform problem, and setting B to be 0. According to the MPEG2-TS / UDP / IP code stream packet loss fault determination method disclosed by the invention, whether video code stream packet loss is caused by a video server or an IP network can be determined conveniently and quickly, and thus the determination accuracy and efficiency are improved.

Description

technical field [0001] The invention belongs to the technical field of communication testing, and relates to a method for judging a packet loss fault, in particular to a method for judging a packet loss fault of an MPEG2-TS / UDP / IP code stream. Background technique [0002] User Experience Quality Assurance [0003] In recent years, with the rapid development of IP networks and applications and the increasingly intensified competition in the communication market, major telecom and radio and television operators around the world are setting off an upsurge of "triple play" business development. On the one hand, telecom operators have entered the field of digital TV through IPTV technology; on the other hand, cable TV operators have also accelerated the two-way transformation of digital TV networks and the transmission of IP-based trunk program signals in order to provide VOD and time-shifted TV services. [0004] As a digital video service, IPTV must compete with traditional c...

AI Technical Summary

Problems solved by technology

[0006] (1) IPTV content providers (such as TV stations) lose TS packets due to software and hardware problems of the encoder during the encoding process of video program sources

[0007] (2) When the IPTV video server provides video streaming services to the user's set-top box, various failures may occur (such as CPU overload, file corruption in the disk or software error), thus randomly discarding some TS packets in the video program source

[0018] However, for the latter protocol encapsulation method (ie, MPEG2-TS / UDP / IP), due to the lack of RTP layer, it is impossible to accurately calculate the number of UDP packet loss based only on the UDP protocol header (without any packet sequence number field)

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