CN101511013B - Method, equipment and system for processing video message - Google Patents
Method, equipment and system for processing video message Download PDFInfo
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- CN101511013B CN101511013B CN2009101297461A CN200910129746A CN101511013B CN 101511013 B CN101511013 B CN 101511013B CN 2009101297461 A CN2009101297461 A CN 2009101297461A CN 200910129746 A CN200910129746 A CN 200910129746A CN 101511013 B CN101511013 B CN 101511013B
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Abstract
The invention provides a video message processing method and a piece of equipment and a system thereof, wherein the video message processing method comprises the following steps: the video message encapsulated in a TS over UDP format is received; sequence identification information is inserted to the load of the video message; the video message provided with the inserted sequence identification information is transmitted to a receiving device. The method has an advantage that by adding sequence identification information to the message encapsulated in the TS over UDP format when the forwarding equipment of operators is transmitting and processing, a receiver can detect lost and error packages and ask for the retransmission of lost message according to a serial number.
Description
Technical field
The present invention relates to field of video communication, relate in particular to a kind of processing method, equipment and system of video message.
Background technology
According to the definition in " ETSI TS 102 034 v1.3.1 (Transport of MPEG 2 Transport Stream (TS) Based DVB Services over IP Based Networks-200709) "; Audio/video flow in the interactive Web TV system (IPTV) and business information are multiplexing to an effective dynamic image (MPEG of expert group; Moving Pictures Experts Group) MPTS (TS, TransportStream).The TS message that generates is through end user's datagram protocol (UDP; User DatagramProtocol) mode (TS over UDP) encapsulation perhaps encapsulates through the mode (TS over RTP) of RTP (RTP, Real-timeTransport Protocol).When TS directly is encapsulated among the UDP, when promptly adopting TS over UDP encapsulation format, encapsulation format is shown in Figure 1A.When TS is encapsulated among the RTP, when promptly adopting TS over RTP encapsulation format, encapsulation format is shown in Figure 1B.The difference of two kinds of transmission modes is, the latter has encapsulated one deck RTP encapsulation many, and the RTP header format is shown in Fig. 1 C.
Sequence number in the RTP head (SN, Sequence Number) has identified the sequence number of RTP packet, and receiving terminal can be according to this sequence number detection packet loss, rebuild packet sequence and lose the message of sequence number to the transmitting terminal request.When adopting RTP directly to carry the encapsulation format of TS (TS over RTP); Receiving terminal can detect packet loss and the sequence number message is lost in request according to SN; Then receiving terminal can be lost the message (ARQ: automatic repeat requests), improve user's video quality and experience of sequence number according to sequence number detection message dropping and request.And when adopting TS over UDP encapsulation; Owing to have no the information of sign message in the UDP packet header; So receiving terminal is received UDP directly behind the message of encapsulation, can not detect and message is lost in request, then receiving terminal can't improve the video quality that improves the user through relational approach and experiences.
Receiving terminal according to the process that sequence number carries out ARQ is when adopting the encapsulation format of TS over RTP: head end sends the audio frequency and video message based on TS over RTP encapsulation, identifies message sequence through SN; After receiving terminal is received message, detect according to SN whether message dropping is arranged; The receiving terminal head-end is sent repeat requests (comprising the SN that loses message), and the request head end resends the message of losing; The message that the head end transmission is lost is to receiving terminal.
Shown in Fig. 1 C, comprise timestamp (timestamp) in the RTP head, timestamp is the sampling time of the 1st byte of RTP packet, can make the timing relationship at the packet of receiving terminal be able to recover, thereby reduce time-delay and shake that network causes.Describe according to RFC 2250 (RTP Payload Format forMPEG1/MPEG2 Video); This sampling time is to obtain from the dull clock that increases of a time; Clock reference corresponding to transmitting terminal 90kHz; This clock should be synchronous with the Pgmtime benchmark (PCR, Program Clock Reference) of TS stream.In BTV, the timestamp overhead processing more complicated of RTP, and have little significance in the practical application, and needing special-purpose conversion equipment (like the DVB-IP transfer gateway), the maintenance costs of conversion cost and equipment is high.And the video encapsulation format of TS over UDP is more prone to easy in operation, thereby need provide the video message of the head end streaming system of a kind of TS of being applicable to over UDP to lose mistake to guarantee the repair free of charge the compound method.
Summary of the invention
The purpose of the embodiment of the invention is to provide a kind of processing method, equipment and system of video message, can be applicable to that UDP directly carries the re-transmission of the streaming system of TS (TS over UDP).
For realizing above-mentioned purpose, the embodiment of the invention provides a kind of processing method of video message, and this method comprises: receive the video message with the encapsulation of TS over UDP form; Insetion sequence identification information in the load of said video message; And the video message that will insert said sequence identifier information sends to receiving equipment, and said sequence identifier information is the simplification RTP head that is inserted in behind the UDP head.
For realizing above-mentioned purpose, the embodiment of the invention also provides a kind of treatment facility of video message, and this equipment comprises: receiver module is used to receive the video message with the encapsulation of TS over UDP form; Insert module is used for the load insetion sequence identification information at said video message; And sending module, the video message that inserts said sequence identifier information is sent to receiving equipment, said sequence identifier information is the simplification RTP head that is inserted in behind the UDP head.
For realizing above-mentioned purpose; The embodiment of the invention also provides a kind of treatment system of video message; This system comprises: conversion equipment; Be used to receive video message with the encapsulation of TS over UDP form, insetion sequence identification information in the load of said video message, and the video message that will insert said sequence identifier information sends to receiving equipment; Whether receiving equipment is used to receive the video message that inserts said sequence identifier information, and come detection messages to lose according to the said sequence identifier information in the Media Stream, and said sequence identifier information is the simplification RTP head that is inserted in behind the UDP head.
Pass through the embodiment of the invention; Message to TS over UDP encapsulation need not to change head end; Need not special-purpose conversion equipment; Only, the forwarding of operator's forwarding unit in the message of TS over UDP encapsulation, adds sequence identifier information when handling, to realize that receiving terminal is lost wrong detective survey according to sequence number and repeat requests is lost message.
Description of drawings
Accompanying drawing described herein is used to provide further understanding of the present invention, constitutes the application's a part, does not constitute qualification of the present invention.In the accompanying drawings:
Figure 1A is the sketch map of the TS over UDP encapsulation format of video message;
Figure 1B is the TS over RTP encapsulation format sketch map of video message;
Fig. 1 C is a RTP Header form;
Fig. 2 is the flow chart of processing method of the video message of the embodiment of the invention one;
Fig. 3 is the sketch map of the insetion sequence identification information mode of the embodiment of the invention two;
Fig. 4 is the sketch map of the insetion sequence identification information mode of the embodiment of the invention three;
Fig. 5 is the sketch map of the insetion sequence identification information mode of the embodiment of the invention four;
Fig. 6 is the sketch map of the insetion sequence identification information mode of the embodiment of the invention five;
Fig. 7 is the structural representation of treatment facility of the video message of the embodiment of the invention six;
Fig. 8 is the structural representation of treatment system of the video message of the embodiment of the invention seven.
Embodiment
For the purpose, technical scheme and the advantage that make the embodiment of the invention is clearer,, the embodiment of the invention is explained further details below in conjunction with embodiment and accompanying drawing.At this, illustrative examples of the present invention and explanation thereof are used to explain the present invention, but not as to qualification of the present invention.
Embodiment one
Present embodiment provides a kind of processing method of video message.Describe in detail with reference to Fig. 2 below and describe the processing method according to video message of the present invention in detail, this method comprises:
Step S110 receives the video message with the encapsulation of TS over UDP form; This step is carried out by the forwarding unit of operator;
Step S120, insetion sequence identification information in the load of said video message; Wherein, sequence identifier information can be to simplify the MPTS (TS) of real-time transport protocol (rtp) head, bearing message sequence number, directly be inserted in the sign of sign sequence number in sequence of message number or the IP heading in the video message load; Wherein, simplify the RTP head and can include only payload type (PT, Payload Type) field and sequence number (SN) field, the TS of bearing message sequence number is used for the TS of bearing message sequence number for using specified packet identification (PID) sign;
Step S130 sends to receiving equipment with the video message that inserts said sequence identifier information, makes receiving equipment carry out the wrong bag of packet loss according to the sequence identifier information of said video message and handles.
Present embodiment is through when the forwarding of operator's forwarding unit is handled, in the message of TS over UDP encapsulation, adding sequence identifier information, to realize that receiving terminal is lost wrong detective survey according to sequence number and repeat requests is lost message.
Embodiment two
Present embodiment provides a kind of method of insetion sequence identification information.Specify this method with reference to Fig. 3 below.This method comprises: for the stream of TS over UDP encapsulation format, behind the UDP head, insert the simplification RTP head of a customization, in order padding sequence number successively in new RTP head.Simplify the RTP head and formulate specific PT, this RTP unique purpose is to carry SN, to be used to lose mistake and to guarantee the repair free of charge again, can adopt the RTP head of simplification, only to comprise PT and SN field, not comprise a timestamp and SSRC field
(as being filled to be 0), (V, Version) field still is filled to 2 to keep backward compatibility at version.Can specify specific PT value to be used to identify the RTP of this type, also can continue to use existing P T value, use other bit to distinguish then.Also can define a kind of RTP head (as adopting new v value) of simplification of 4 bytes newly, comprise SN in this header format.
Present embodiment can be implemented in the message of TS over UDP encapsulation and adds sequence identifier information.
Embodiment three
Present embodiment provides the method for another kind of insetion sequence identification information.Specify this method with reference to Fig. 4 below.This method comprises: the TS that in the load of video message, inserts the bearing message sequence number; Discern (PID with specifying a specific bag; Packet Identification); Be used to identify that this TS carries is sequence of message number, per six transmit flow datas (TS) generate a sequence number in fluidisation.Wherein, 4 Program Specific Information (PSI, Program Specific Information) have been stipulated among the MPEG-2; Comprise Program Association Table (PAT, Program Association Table), conditional access table (CAT; Conditional Access Table), Program Map Table (PMT, Program Map Table); Network information table (NIT, Network Information Table).The PID that the above two are corresponding is respectively 0,1, and the PID that divides into groups in latter two place is specified by PAT.
Present embodiment can be implemented in the message of TS over UDP encapsulation and adds sequence identifier information.
Embodiment four
Present embodiment provides the method for another kind of insetion sequence identification information.Specify this method with reference to Fig. 5 below.This method comprises: the ad-hoc location at the UDP payload is specified respective byte, is used to identify the sequence number that this UDP carries; Ad-hoc location can be 2 bytes after 7 TS, also can be in 7 TS, 2 bytes or other position before, and this position can be arranged between retransmission service device and re-transmission client through configuration or signaling.
Present embodiment can be implemented in the message of TS over UDP encapsulation and adds sequence identifier information.
Embodiment five
Present embodiment provides the method for another kind of insetion sequence identification information.Specify this method with reference to Fig. 6 below.This method comprises: to message maintain internal sequence, the sign in the IP heading (IP Header) is set then in the TS over UDP fluidization treatment, makes this sign have session layer continuous space meaning, be used to identify the sequence number that this UDP carries.
Present embodiment can be implemented in the message of TS over UDP encapsulation and adds sequence identifier information.
Embodiment six
Present embodiment provides a kind of treatment facility of video message.Specify the treatment facility 700 according to video message of the present invention with reference to Fig. 7 below, this equipment comprises:
Sending module 703 is used for the video message that inserts said sequence identifier information is sent to receiving equipment.
This equipment also comprises sequence identifier information-generation module 704 in addition, is used to produce said sequence identifier information.This sequence identifier information is the sign of sign sequence number in the MPTS of simplifying RTP head, bearing message sequence number, the sequence of message that directly in said video message load, inserts number or the IP heading.
Present embodiment is through adding sequence identifier information, to realize that receiving terminal is lost wrong bag detection according to sequence number and repeat requests is lost message in the message that TS over UDP encapsulates when the forwarding of operator's forwarding unit is handled.
Embodiment seven
Present embodiment provides a kind of treatment system of video message.Specify the treatment system according to video message of the present invention with reference to Fig. 8 below, this system comprises:
Whether receiving equipment 802 is used to receive the video message that inserts said sequence identifier information, and comes detection messages to lose according to the said sequence identifier information in the Media Stream, when message dropping, sends repeat requests to retransmission device; And
Wherein, retransmission device 803 can be positioned on the conversion equipment 801.Though among Fig. 8 conversion equipment 801 and retransmission device 803 (media buffer, processing repeat requests etc.) are separated drafting, also can put together, promptly conversion equipment 801 is realized through same entity with the function of retransmission device 803.
Present embodiment is through when the forwarding of operator's forwarding unit is handled, in the message of TS over UDP encapsulation, adding sequence identifier information, to realize that receiving terminal is lost wrong detective survey according to sequence number and repeat requests is lost message.
Above-described specific embodiment; The object of the invention, technical scheme and beneficial effect have been carried out further explain, and institute it should be understood that the above is merely specific embodiment of the present invention; And be not used in qualification protection scope of the present invention; All within spirit of the present invention and principle, any modification of being made, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (7)
1. the processing method of a video message, this method comprises:
The video message of TS form encapsulation is directly carried in reception with UDP;
In the load of said video message, insert the sequence identifier information of said video message;
The video message that inserts said sequence identifier information is sent to receiving equipment;
Said sequence identifier information is the simplification RTP head that is inserted in behind the UDP head, and said simplification RTP head is made up of payload type field and the sequence-number field corresponding with said video message.
2. the treatment facility of a video message, this equipment comprises:
Receiver module is used to receive the video message that directly carries the encapsulation of TS form with UDP;
Insert module is used for the sequence identifier information at the said video message of load insertion of said video message;
Sending module is used for the video message that inserts said sequence identifier information is sent to receiving equipment;
Said sequence identifier information is the simplification RTP head that is inserted in behind the UDP head, and said simplification RTP head is made up of payload type field and the sequence-number field corresponding with said video message.
3. according to the said equipment of claim 2, it is characterized in that this equipment also comprises: the sequence identifier information-generation module is used to produce said sequence identifier information, and the sequence identifier information that produces is sent to said insert module.
4. the treatment system of a video message, this system comprises:
Conversion equipment is used to receive the video message that directly carries the encapsulation of TS form with UDP, insetion sequence identification information in the load of said video message, and the video message that will insert said sequence identifier information sends to receiving equipment;
Whether receiving equipment is used to receive the video message that inserts said sequence identifier information, and comes detection messages to lose according to the said sequence identifier information in the Media Stream;
Said sequence identifier information is the simplification RTP head that is inserted in behind the UDP head, and said simplification RTP head is made up of payload type field and the sequence-number field corresponding with said video message.
5. system according to claim 4 is characterized in that, said system also comprises: retransmission device, the repeat requests of sending when being used to receive said receiving equipment message dropping, and retransmission of lost message to said receiving equipment.
6. system according to claim 4 is characterized in that: said conversion equipment is positioned on the forwarding unit.
7. system according to claim 6 is characterized in that: said conversion equipment and retransmission device are positioned on the same entity; Or said conversion equipment and retransmission device are positioned on the different entities.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101297461A CN101511013B (en) | 2009-03-26 | 2009-03-26 | Method, equipment and system for processing video message |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2009101297461A CN101511013B (en) | 2009-03-26 | 2009-03-26 | Method, equipment and system for processing video message |
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| CN101511013A CN101511013A (en) | 2009-08-19 |
| CN101511013B true CN101511013B (en) | 2012-01-04 |
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Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102223218B (en) * | 2010-04-15 | 2014-06-25 | 华为技术有限公司 | Method and equipment for inhibiting media message retransmission |
| CN102595251B (en) * | 2011-01-11 | 2016-07-27 | 中兴通讯股份有限公司 | Streaming media packet loss retransmission realizes method and system |
| CN103368703B (en) * | 2012-04-10 | 2016-08-17 | 华为技术有限公司 | Data package retransmission method, data packet receiving method and device |
| US9544641B2 (en) * | 2012-05-10 | 2017-01-10 | Humax Co., Ltd. | Hybrid transmission method through MMT packet format extension |
| CN102882920B (en) * | 2012-06-25 | 2016-01-20 | 深圳市同洲电子股份有限公司 | The control method of digital television system, system and relevant device |
| CN103686443B (en) * | 2013-12-02 | 2017-02-08 | 浙江宇视科技有限公司 | Method and device for improving TS (transport stream) sorting ability |
| CN107846291B (en) * | 2016-09-18 | 2020-02-14 | 华为技术有限公司 | Message processing method, fault positioning method and network equipment |
| CN106792002B (en) * | 2016-12-23 | 2020-05-05 | 伟乐视讯科技股份有限公司 | Front-end comprehensive decoder supporting SCTE-35 message insertion |
| CN108322836A (en) * | 2018-01-24 | 2018-07-24 | 北京奇艺世纪科技有限公司 | A kind of method and device of data transmission |
| CN114553969B (en) * | 2020-11-20 | 2024-01-30 | 比亚迪股份有限公司 | Data transmission method, electronic device and storage medium |
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