CN102378066B - A kind of method and system for realizing low bit- rate high definition program request - Google Patents
A kind of method and system for realizing low bit- rate high definition program request Download PDFInfo
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Abstract
The invention discloses a kind of method and system for realizing low bit- rate high definition program request, it is related to user's program request field in IPTV system, method includes：In IPTV system, network side is issued after low bit- rate high definition mark is added in low bit- rate high definition media file；When program request low bit- rate high definition media file, end side sends the order request for carrying maximum bandwidth capability in node to network side；Network side receives the order request, and after the low bit- rate high definition in the low bit- rate high definition media file for detecting request program request is identified effectively, according to maximum bandwidth capability in node, generate flow control information, and according to the flow control information, the low bit- rate high definition media file for asking program request is sent to end side.In user's on-demand process of the present invention in IPTV system, Consumer's Experience can not only be improved, the practicality and ease for use of IPTV system is also improved.
Description
Technical field
The present invention relates to user's program request field in IPTV IPTV system, including video on demand, regard in real time
Frequency broadcasts TVOD, time-moving television program request TSTV, more particularly to a kind of utilization flow sends out control and realizes low bit- rate high definition program request soon
Complete method and system.
Background technology
Current IPTV technologies have become a hot technology, as IPTV service constantly extends, IPTV solution party
Case also emerges in an endless stream.For basic service, mainly there are two classes, a class is the frequency that all user's synchronizations see identical content
Road business, another kind of is each user free fast forwarding and fast rewinding and demand (telecommunication) service of positioning playing respectively.Wherein, the channel industry
Business mainly includes common direct broadcast band, carousel channel, time shifting channel, and the user of viewing programme televised live depends on these channels.Institute
Stating demand (telecommunication) service mainly includes VOD program requests, TVOD program requests and user the TSTV program requests on time shifting channel.
The diversity of business determines the diversity of solution., it is necessary to carry out content file for demand (telecommunication) service
Reading, the control of playing progress rate and send media stream packet flow control and piece source contents issue.In current IPTV
In VOD system, when the VOD files used in program request are high definition film source, there are two kinds of processing methods：One is sent out with high code check
Cloth high-definition content, and when set top box STB is in high definition program request, realizes that high definition on-demand media takes using Conventional media mode of giving out a contract for a project
Business；Two be that when in node without high definition film source, this broadcasting user can be redirected into dependence node, is handled with Conventional media program request
Flow provides media services, but it is so big to the dependence of the node with high definition film source there is provided high definition on-demand media clothes
Business is limited in one's ability.Both processing methods all exist than large effect for Consumer's Experience, while also reducing IPTV system
Practicality and ease for use.
Therefore, prior art is badly in need of improving and developed.
The content of the invention
It is an object of the invention to provide a kind of method and system for realizing low bit- rate high definition program request, for not enough in bandwidth
And on the not enough node of high code check film source, provide the user the demand of high definition service.
According to an aspect of the present invention, a kind of method for realizing low bit- rate high definition program request that the present invention is provided includes：
In IPTV system, network side is sent out after low bit- rate high definition mark is added in low bit- rate high definition media file
Cloth；
When program request low bit- rate high definition media file, end side will carry the order request of maximum bandwidth capability in node
Send to network side；
Network side receives the order request, and the low code in the low bit- rate high definition media file for detecting request program request
After rate high definition mark is effective, according to maximum bandwidth capability in node, flow control information is generated, and letter is controlled according to the flow
Breath, the low bit- rate high definition media file for asking program request is sent to end side.
The network side adds the step of being issued after low bit- rate high definition mark in low bit- rate high definition media file and wrapped
Include：
The media services unit of network side adds low in the Session Description Protocol SDP information of low bit- rate high definition media file
Code check high definition is identified；
The low bit- rate high definition media file for adding low bit- rate high definition mark is subjected to transcoding processing and issued.
Maximum bandwidth capability includes the maximum bandwidth and caching spatial value of set top box in the node.
If end side does not send the maximum bandwidth of set top box to network side, acquiescence maximum bandwidth is set to set top box
Maximum bandwidth.
The step of generation flow control information, includes：
The Service Processing Unit of network side is received after the order request, the low bit- rate high definition media text of detection request program request
Low bit- rate high definition mark in part；
When low bit- rate high definition mark is effective, according to the maximum bandwidth of the set top box and caching spatial value, calculate
Include the flow control information of fast hair duration, and the file for carrying maximum bandwidth capability in flow control information and node is beaten
Request is opened to send to the media services unit of network side.
The step of low bit- rate high definition media file by request program request is sent to end side includes：
The media services unit of network side opens the low bit- rate high definition media file according to the file open request, and
When judging that low bit- rate high definition mark therein is effective, the low bit- rate high definition media text of program request will be asked in the fast hair duration
Part is sent to end side with the maximum bandwidth of the set top box.
According to another aspect of the present invention, a kind of system for realizing low bit- rate high definition program request that the present invention is provided includes position
Set top box in end side, the Service Processing Unit positioned at network side and media services unit, wherein：
The set top box, when program request low bit- rate high definition media file, will carry the point of maximum bandwidth capability in node
Request is broadcast to send to network side；
The Service Processing Unit, for receiving the order request, and in the low bit- rate high definition for detecting request program request
After low bit- rate high definition in media file is identified effectively, according to maximum bandwidth capability in node, flow control information is generated；
The media services unit, in IPTV system, low bit- rate being added in low bit- rate high definition media file high
Issued after clear mark, and according to the flow control information, by the low bit- rate high definition media file of request program request send to
End side.
Further, the Service Processing Unit includes：
Business module, the program request for carrying maximum bandwidth capability in node that the set top box for receiving terminal side is sent please
Ask, maximum bandwidth capability includes the maximum bandwidth and caching spatial value of set top box in the node；
Real time streaming transport protocol RTSP module, the low bit- rate in low bit- rate high definition media file for detecting request program request
High definition is identified, and when low bit- rate high definition mark is effective, according to the set top box maximum bandwidth and caching spatial value, is calculated
Include the flow control information of fast hair duration, and the file for carrying maximum bandwidth capability in flow control information and node is beaten
Request is opened to send to media services unit.
Further, the media services unit includes：
Service agent module, the file open request for receiving RTSP module transmission；
Streaming media module, for according to the file open request, opening the low bit- rate high definition media of request program request
File, and when judging that the low bit- rate high definition mark therein is effective, the low code of program request will be asked in the fast hair duration
Rate high definition media file is sent to end side with the set top box maximum bandwidth.
Further, the streaming media module is additionally operable to the Session Description Protocol SDP letters in low bit- rate high definition media file
Low bit- rate high definition mark is added in breath, and the low bit- rate high definition media file for adding low bit- rate high definition mark is subjected to transcoding
Handle and issue.
Compared with prior art, the beneficial effects of the present invention are：The present invention is not enough and high code check film source is not enough in bandwidth
Node on, high definition service can be provided the user, while the service pressure for improving high definition node realizes the height of load balancing
Clear service.
Brief description of the drawings
Fig. 1 is a kind of method schematic for realizing low bit- rate high definition program request provided in an embodiment of the present invention；
Fig. 2 is the media services flow that low bit- rate high definition is realized in IPTV program requests system flow control provided in an embodiment of the present invention
Figure.
Embodiment
Below in conjunction with accompanying drawing to a preferred embodiment of the present invention will be described in detail, it will be appreciated that described below is excellent
Select embodiment to be merely to illustrate and explain the present invention, be not intended to limit the invention.
Fig. 1 shows a kind of method schematic for realizing low bit- rate high definition program request provided in an embodiment of the present invention, such as Fig. 1 institutes
Show, step includes：
Step S101, in IPTV system, network side added in low bit- rate high definition media file low bit- rate high definition mark
Issued afterwards.Specifically, Session Description Protocol SDP of the media services unit of network side in low bit- rate high definition media file
Low bit- rate high definition mark is added in information, then, the low bit- rate high definition media file for adding low bit- rate high definition mark is entered
Row transcoding is handled and issued.
That is, the node of network side is in order to meet the order program service demand of offer low bit- rate high definition, for low bit- rate
The content of high definition, such as MPG format contents, in issue, it is necessary to be issued again by transcoding, pretreatment ring of the present invention in transcoding
Section, by the streaming media module of media services unit, low bit- rate high definition identification field is supported in increase inside assembling SDP information.
Step S102, when program request low bit- rate high definition media file, end side will carry maximum bandwidth capability in node
Order request send to network side.Wherein, maximum bandwidth capability includes the maximum bandwidth and caching of set top box in the node
Spatial value, if end side does not send the maximum bandwidth of set top box to network side, set top box is set to by acquiescence maximum bandwidth
Maximum bandwidth.
In other words, when program request low bit- rate high definition media file, the set top box of end side will in the form of RTSP message
The order request for carrying the maximum bandwidth capability in node is sent to network side, wherein, maximum bandwidth capability in the node
Including set top box maximum bandwidth tolerance Bandwidth, i.e. maximum bandwidth, and spatial cache value BurstSize.The machine top
The maximum bandwidth of box refers to the bandwidth limitation service ability of set top box, is that low bit- rate high definition media file is sent to end from network side
The maximum bandwidth of side.If set top box does not report the maximum bandwidth, media server directly issues an acquiescence most
Big bandwidth is to Streaming Media, such as 3Mbps.
Step S103, network side receive the order request, and are detecting the low bit- rate high definition media text of request program request
After low bit- rate high definition in part is identified effectively, according to maximum bandwidth capability in node, flow control information is generated, and according to described
Flow control information, the low bit- rate high definition media file for asking program request is sent to end side.Specifically, the business of network side
Processing unit is received after the order request, the low bit- rate high definition mark in the low bit- rate high definition media file of detection request program request
Know, when low bit- rate high definition mark is effective, according to the maximum bandwidth of the set top box and caching spatial value, calculating includes fast
Send out the flow control information of duration, and the file open request that maximum bandwidth capability in flow control information and node will be carried
Send to the media services unit of network side.The media services unit of network side opens described low according to the file open request
Code check high definition media file, and when judging that low bit- rate high definition mark therein is effective, will be asked a little in the fast hair duration
The low bit- rate high definition media file broadcast is sent to end side with the maximum bandwidth of the set top box.
Put it briefly, in the announced low bit- rate high-definition content of program request, the streaming media module of media services unit according to
Maximum bandwidth capability in low bit- rate high definition mark and node, carries out flow and sends out control soon, i.e., sent out high definition soon using low bit- rate
Effect is presented to user.Further, when set-top box requests are sent out soon, for low bit- rate high-definition content, network side is according to caching
The maximum bandwidth Bandwidth of spatial value BurstSize and set top box calculates fast hair duration, and streaming media module is according to the fast hair
Duration, is set top box maximum bandwidth according to default fast hair speed, carries out the flow control of media bag, realizes the media clothes of high definition
Business effect.
Fig. 2 shows that the media services of low bit- rate high definition are realized in IPTV program requests system flow control provided in an embodiment of the present invention
Flow chart, as shown in Fig. 2 including：
Step S201, position of media service system MLSS modules carry out the management and distribution of order program service so that machine top
The order request on media services that box is sent preferentially is chosen home node and serviced.
Order request is sent in the Service Processing Unit of home node, the order request by step S202, set top box
Carry maximum bandwidth capability in node.
Step S203, the business module of Service Processing Unit are received after the order request, and RTSP module increase program request is used
Family.
Step S204, the RTSP module detection low bit- rate high definition of Service Processing Unit identify whether effectively, and are judging low
After code check high definition mark is effective, the flow control informations such as fast hair duration are calculated according to maximum bandwidth capability in node.
Step S205, the RTSP module of Service Processing Unit send file open request to media services unit.
Step S206, the service agent module of media services unit receive the file open request, the Streaming Media mould
Root tuber opens the media file for asking to play according to the file open request.
Whether the low bit- rate high definition mark in step S207, the SDP information of parsing media file is effective.
Step S208, streaming media module detect the low bit- rate high definition mark it is effective when, the fast hair of control when playing
Media file, i.e., be sent to by the information such as media stream rate and duration in hair duration soon according to the maximum bandwidth of set top box
The set top box of end side, realizes the high definition program request of low bit- rate film source, strengthens the viewing effect of user.
In addition, can see by the present embodiment, a kind of system for realizing low bit- rate high definition program request is included positioned at end side
Set top box, the Service Processing Unit positioned at network side and media services unit, wherein：
The set top box, for when program request low bit- rate high definition media file, maximum bandwidth capability in node will to be carried
Order request send to network side.
The Service Processing Unit, for receiving the order request, and in the low bit- rate high definition for detecting request program request
After low bit- rate high definition in media file is identified effectively, according to maximum bandwidth capability in node, flow control information, i.e. root are generated
Being calculated according to set top box maximum bandwidth and caching spatial value includes the flow control information of fast hair duration.Further, the business
Processing unit includes：
Business module, the program request for carrying maximum bandwidth capability in node sent for receiving terminal side set top box please
Ask, maximum bandwidth capability includes the maximum bandwidth and caching spatial value of set top box in the node；
Low bit- rate high definition mark in RTSP module, the low bit- rate high definition media file for detecting request program request, and work as
When the low bit- rate high definition identifies effective, according to the maximum bandwidth of the set top box and caching spatial value, when calculating including hair soon
Long flow control information, and the file open request for carrying maximum bandwidth capability in flow control information and node is sent
To media services unit.
The media services unit, in IPTV system, low bit- rate being added in low bit- rate high definition media file high
Issued after clear mark, and according to the flow control information, by the low bit- rate high definition media file of request program request send to
End side, i.e., after it is determined that low bit- rate high definition mark is effective, with the set top box maximum bandwidth in the fast hair duration
The low bit- rate high definition media file for asking program request is sent to end side.Further, the media services unit includes：
Service agent module, the file open request for receiving RTSP module transmission；
Streaming media module, for according to the file open request, opening the low bit- rate high definition media of request program request
File, and when judging that low bit- rate high definition mark therein is effective, it is in the fast hair duration that the low bit- rate for asking program request is high
Clear media file is sent to end side with the set top box maximum bandwidth.The streaming media module is additionally operable in low bit- rate high definition matchmaker
Low bit- rate high definition mark is added in the Session Description Protocol SDP information of body file, and by described in addition low bit- rate high definition mark
Low bit- rate high definition media file carries out transcoding processing and issued.
Further, the system also includes the MLSS modules positioned at end side for being used to managing and distributing order program service.
In summary, the present invention has following technique effect：
1st, the present invention is avoided when issuing film source with high code check issue high-definition content, to node bandwidth when reducing issue
Take, effectively other service ability of lifting node；
2nd, the present invention increases low bit- rate high definition mark in the SDP information of low bit- rate high definition media file, and practicality is stronger,
It is small on original node networking mode and implementation reconstruct influence；
3rd, the present invention sends low bit- rate high definition media text when there is high definition order request by carrying out the control of fast sending flow amount
Part, makes the transmission of on-demand content be no longer dependent on source code rate, and existing content can be made full use of to provide high-quality media services, carried
High Consumer's Experience.
Obviously, those skilled in the art should be understood that above-mentioned each module of the invention or each step can be with general
Media server device realize, in general, can be distributed on the network that multiple media servers are constituted.They can be with
Realized with the program code that can perform on media server, it is thus possible to which they are held on arbitrary media server
OK, and in some cases, can to perform shown or described step different from order herein, or by they point
Each media services step is not fabricated to, or is combined into new media services flow.So, the present invention is not restricted to any spy
Fixed hardware and software is combined.
Although the present invention is described in detail above, the invention is not restricted to this, those skilled in the art of the present technique
Various modifications can be carried out according to the principle of the present invention.Therefore, all modifications made according to the principle of the invention, all should be understood to
Fall into protection scope of the present invention.
Claims (10)
1. a kind of method for realizing low bit- rate high definition program request, it is characterised in that including：
In IPTV IPTV system, network side adds low bit- rate high definition mark in low bit- rate high definition media file
Issued afterwards；
When program request low bit- rate high definition media file, end side sends the order request for carrying maximum bandwidth capability in node
To network side；
Network side receives the order request, and the low bit- rate in the low bit- rate high definition media file for detecting request program request is high
After clear mark is effective, according to maximum bandwidth capability in node, flow control information is generated, and according to the flow control information,
The low bit- rate high definition media file for asking program request is sent to end side.
2. according to the method described in claim 1, it is characterised in that the network side is added in low bit- rate high definition media file
The step of being issued after low bit- rate high definition mark includes：
The media services unit of network side adds low bit- rate in the Session Description Protocol SDP information of low bit- rate high definition media file
High definition is identified；
The low bit- rate high definition media file for adding low bit- rate high definition mark is subjected to transcoding processing and issued.
3. method according to claim 2, it is characterised in that maximum bandwidth capability includes set top box most in the node
Big bandwidth and caching spatial value.
4. method according to claim 2, it is characterised in that if end side does not send the maximum bandwidth of set top box to net
Network side, acquiescence maximum bandwidth is set to the maximum bandwidth of set top box.
5. the method according to claim 3 or 4, it is characterised in that include the step of the generation flow control information：
The Service Processing Unit of network side is received after the order request, in the low bit- rate high definition media file of detection request program request
Low bit- rate high definition mark；
When low bit- rate high definition mark is effective, according to the maximum bandwidth of the set top box and caching spatial value, calculating includes
The flow control information of fast hair duration, and please by the File Open for carrying maximum bandwidth capability in flow control information and node
Ask and send to the media services unit of network side.
6. method according to claim 5, it is characterised in that described to send out the low bit- rate high definition media file for asking program request
The step of delivering to end side includes：
The media services unit of network side opens the low bit- rate high definition media file according to the file open request, and is sentencing
When disconnected low bit- rate high definition mark therein is effective, will be asked in the fast hair duration low bit- rate high definition media file of program request with
The maximum bandwidth of the set top box is sent to end side.
7. a kind of system for realizing low bit- rate high definition program request, it is characterised in that including the set top box positioned at end side, positioned at network
The Service Processing Unit and media services unit of side, wherein：
The set top box, for when program request low bit- rate high definition media file, the point of maximum bandwidth capability in node will to be carried
Request is broadcast to send to network side；
The Service Processing Unit, for receiving the order request, and in the low bit- rate high definition media for detecting request program request
After low bit- rate high definition in file is identified effectively, according to maximum bandwidth capability in node, flow control information is generated；
The media services unit, in IPTV system, low bit- rate high definition mark to be added in low bit- rate high definition media file
Issued, and according to the flow control information, the low bit- rate high definition media file for asking program request is sent to terminal after knowledge
Side.
8. system according to claim 7, it is characterised in that the Service Processing Unit includes：
Business module, the order request for carrying maximum bandwidth capability in node that the set top box for receiving terminal side is sent,
Maximum bandwidth capability includes the maximum bandwidth and caching spatial value of set top box in the node；
Real time streaming transport protocol RTSP module, the low bit- rate high definition in low bit- rate high definition media file for detecting request program request
Mark, and when low bit- rate high definition mark is effective, according to the maximum bandwidth of the set top box and caching spatial value, calculate bag
Include the flow control information of fast hair duration, and the File Open that maximum bandwidth capability in flow control information and node will be carried
Request is sent to media services unit.
9. system according to claim 8, it is characterised in that the media services unit includes：
Service agent module, the file open request for receiving RTSP module transmission；
Streaming media module, for according to the file open request, opening the low bit- rate high definition media file of request program request,
And when judging that low bit- rate high definition mark therein is effective, the low bit- rate high definition media of program request will be asked in the fast hair duration
File is sent to end side with the maximum bandwidth of the set top box.
10. system according to claim 9, it is characterised in that the streaming media module is additionally operable in low bit- rate high definition matchmaker
Low bit- rate high definition mark is added in the Session Description Protocol SDP information of body file, and by described in addition low bit- rate high definition mark
Low bit- rate high definition media file carries out transcoding processing and issued.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104427400A (en) * | 2013-08-22 | 2015-03-18 | 中国电信股份有限公司 | Streaming media transmission method and system, and streaming media server |
| CN103731415A (en) * | 2013-12-09 | 2014-04-16 | 乐视网信息技术（北京）股份有限公司 | High code stream data transmitting method and device |
| CN103826144A (en) * | 2014-02-27 | 2014-05-28 | 深圳市同洲电子股份有限公司 | Method and device for switching push flow platform |
| CN109120966B (en) * | 2018-08-30 | 2020-10-09 | 广州珠江数码集团股份有限公司 | Method, device and system for intelligently judging and identifying code rate of 4K video-on-demand |
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