CN105338420B - Media playing method and device and offer device and play system - Google Patents
Media playing method and device and offer device and play system Download PDFInfo
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Abstract
The present invention proposes a kind of media playing method and device and provides device and play system, is related to multimedia technology field.Wherein, a kind of media playing method includes: to play group broadcasting program according to the group broadcasting program index in program indexing in multicast network, wherein the program indexing further includes unicast program indexing；When being switched to unicast networks from multicast network, unicast program is played according to the unicast program indexing in the program indexing；Wherein, the group broadcasting program and the unicast program are same program respectively in the publication of the multicast network and the unicast networks.By such method, it can be realized when being switched to unicast networks from multicast network, continue to play the unicast program synchronous with group broadcasting program, program broadcasting is uninterruptedly.
Description
Technical field
The present invention relates to multimedia technology field, especially a kind of media playing method and device and device is provided and is broadcast
Place system.
Background technique
With the raising of the broadening and efficiency of transmission of mobile network's bandwidth, using mobile network carry out video multicast services at
For development priority, as MBMS (Multimedia Broadcast Multicast Service, multimedia broadcast multi-broadcasting business),
EMBMS (enhanced multimedia broadcast multicast service) has obtained good development.But when user from support multicast services shifting
Dynamic network switching is to other networks, and when such as broadband network, Video service will be interrupted, such as eMBMS is built upon LTE
On (Long Term Evolution, long term evolution) network foundation, when user leaves LTE network, view that user is just using
The business that is taken in small doses at short intervals will be interrupted.
Summary of the invention
Group broadcasting program interrupts when it is an object of the invention to solve the problem of that multicast network switches to unicast networks.
The present invention proposes a kind of media playing method, comprising: in multicast network according to the group broadcasting program rope in program indexing
Draw broadcasting group broadcasting program, wherein program indexing further includes unicast program indexing；When being switched to unicast networks from multicast network,
Unicast program is played according to the unicast program indexing in program indexing；Wherein, group broadcasting program and unicast program are same program point
Not in the publication of multicast network and unicast networks.
Further, it when being switched to multicast network from unicast networks, is broadcast according to the group broadcasting program index in program indexing
Put group broadcasting program.
Further, unicast program indexing includes the routing information and I frame index information of unicast program, group broadcasting program index
Address information including multicast channel.
Further, when being switched to unicast networks from multicast network, according to the road of unicast program in unicast program indexing
Diameter information and I frame index information obtain the unicast program since group broadcasting program playback progress.
Further, when being switched to multicast network from unicast networks, according to group broadcasting program index in multicast channel ground
Location acquisition of information group broadcasting program.
Further, multicast network is the mobile communications network for supporting MBMS or eMBMS, and unicast networks are to support CDN
Broadband network.
By such method, can on the basis of existing network, when being switched to unicast networks from multicast network,
The unicast program synchronous with group broadcasting program is obtained from unicast networks, to realize that video playing is uninterrupted.
The present invention proposes a kind of media playing apparatus, comprising: multicast media playing module is used in multicast network according to section
Group broadcasting program index in mesh index plays group broadcasting program, wherein program indexing further includes unicast program indexing；Unicast media is broadcast
Amplification module, for playing unicast according to the unicast program indexing in program indexing when being switched to unicast networks from multicast network
Program；Wherein, group broadcasting program and unicast program are same program respectively in the publication of multicast network and unicast networks.
Further, when being switched to multicast network from unicast networks, multicast media playing module is used for according to program rope
Group broadcasting program index in drawing plays group broadcasting program.
Further, unicast program indexing includes the routing information and I frame index information of unicast program, group broadcasting program index
Address information including multicast channel.
Further, when being switched to unicast networks from multicast network, unicast media playing module is used for according to unicast section
The routing information and I frame index information of unicast program, obtain the unicast program since group broadcasting program playback progress in mesh index.
Further, when being switched to multicast network from unicast networks, multicast media playing module is used for according to multicast section
The address information of multicast channel obtains group broadcasting program in mesh index.
Further, multicast network is the mobile communications network for supporting MBMS or eMBMS, and unicast networks are to support CDN
Broadband network.
Device in this way, can on the basis of existing network, when being switched to unicast networks from multicast network,
The unicast program synchronous with group broadcasting program is obtained from unicast networks, to realize that video playing is uninterrupted.
The present invention also proposes that a kind of media provide device, comprising: unicast program indexing receiving module, for receiving unicast section
Unicast program indexing of the mesh in unicast networks；Program indexing generation module, for according to the unicast program indexing and multicast section
Mesh generates program indexing in the group broadcasting program index of multicast network；Program indexing release module, for issuing program indexing；Its
In, the group broadcasting program and the unicast program are same program.
Further, unicast program indexing includes the routing information and I frame index information of unicast program, group broadcasting program index
Address information including multicast channel.
Further, multicast network is the mobile communications network for supporting MBMS or eMBMS, and unicast networks are to support CDN
Broadband network.
Such device can generate the program indexing comprising unicast program indexing and group broadcasting program index, and be sent to visitor
Family end.When client is switched to unicast networks from multicast network, group broadcasting program pair can quickly be navigated to by program indexing
The unicast program answered realizes that video playing is uninterrupted.
In addition, the present invention also proposes that a kind of media play system, including media playing apparatus above-mentioned and media mention
For device.
System in this way is capable of forming the program indexing comprising group broadcasting program index and unicast program indexing.Client
End plays group broadcasting program in multicast network according to group broadcasting program index, is played after being switched to unicast networks according to unicast program indexing
The unicast program synchronous with group broadcasting program, to realize that video playing is uninterrupted.
Detailed description of the invention
The drawings described herein are used to provide a further understanding of the present invention, constitutes part of this application, this hair
Bright illustrative embodiments and their description are used to explain the present invention, and are not constituted improper limitations of the present invention.In the accompanying drawings:
Fig. 1 is the flow chart of one embodiment of media playing method of the invention.
Fig. 2 is the flow chart of another embodiment of media playing method of the invention.
Fig. 3 is the schematic diagram of one embodiment of media playing apparatus of the invention.
Fig. 4 provides the schematic diagram of one embodiment of device for media of the invention.
The schematic diagram of Fig. 5 one embodiment of the network structure of method to realize the present invention.
Fig. 6 is the signaling process figure that client is switched to unicast networks from multicast network.
Specific embodiment
Below by drawings and examples, technical scheme of the present invention will be described in further detail.
One embodiment of media playing method of the invention is as shown in Figure 1.
In a step 101, client is located at multicast network, plays multicast section according to the group broadcasting program index in program indexing
Mesh, wherein program indexing is indexed in addition to group broadcasting program, further includes unicast program indexing.
When 102 occur, client leaves multicast network, when being connected to unicast networks, execute step 103, client according to
Unicast program indexing in program indexing plays unicast program.
Group broadcasting program and unicast program are same programs respectively in the publication of multicast network and unicast networks.
Can use DASH, (Dynamic Adaptive Streaming over HTTP, the dynamic based on HTTP are adaptive
Should flow) methods of allocation methods, it can be realized after being switched to unicast networks from multicast network, continue the broadcasting of program.But
DASH technology needs the complete upgrading of stream media system that could support, in addition, live broadcast service needs using DASH technology in switching
10~30 seconds coding buffer time is wanted, after the video for causing user to receive, multicast and unicast program are asynchronous.Pass through Fig. 1
In method, can on existing network foundation, realize when client is switched to unicast networks from multicast network, play not
Interruption.It is rapid by unicast program indexing positioning unicast program, it does not need to recompile, shortens the unicast program that user receives
Time delay, keep group broadcasting program synchronous with unicast program.
In one embodiment, client is switched to multicast network also from unicast networks and may be implemented to play uninterruptedly, such as
Shown in Fig. 2, in step 201, client plays unicast program according to unicast program indexing, and when occurring 202, client is from unicast
When network switching is to multicast network, step 203 is executed, client can index according to group broadcasting program and play group broadcasting program.Herein
Unicast program it is synchronous with group broadcasting program, therefore, from unicast networks to multicast network switch during can be realized program
What is played is uninterrupted.
It may include the routing information and key frame information of unicast program in unicast program indexing, client is switched to unicast
When network, according to the available unicast section destination path identical with group broadcasting program of routing information, according to I frame information, client
Group broadcasting program progress can be positioned, to obtain the unicast program since group broadcasting program progress.In this way, can
It realizes the linking of group broadcasting program and unicast program playback progress, it is synchronous to realize that group broadcasting program is played with unicast program.
Group broadcasting program index may include the address information of multicast channel, such as IP address or port, when client is from list
When broadcasting network switching to multicast network, can be indexed according to group broadcasting program in the address information of multicast channel play multicast section
Mesh.In this way, client can continue to play group broadcasting program when returning to multicast network.
Multicast network can be the mobile communications network for supporting MBMS or eMBMS.MBMS is more matchmakers defined in 3GPP R6
Body broadcast multicast feature can be modified on original communication network: increase BM-SC network element, to existing PS (Packet
Switch, packet switch) domain related network elements progress MBMS function upgrading；EMBMS is the MBMS of evolution version, can be in LTE network
Middle realization.Unicast networks can be broadband network, pass through CDN (Content Distribution Network, content delivery network
Network) play unicast program.MBMS is one of efficient video bearer technology of mobile field, and CDN is that video is provided in broadband network
The mainstream framework of service realizes that the switching of multicast and unicast has wide practical use on the basis of MBMS and CDN.
The schematic diagram of one embodiment of media playing apparatus of the invention is as shown in figure 3,301 play mould for multicast media
Block, 302 be unicast media playing module.
When media playing apparatus is located at multicast network, multicast media receiving module 301 is according to the multicast in program indexing
Program indexing plays group broadcasting program.When media playing apparatus, which leaves multicast network, enters unicast networks, unicast media receives mould
Block 302 plays unicast program according to the unicast program indexing in program indexing.Unicast program and group broadcasting program are the same programs
Respectively in the publication of multicast network and unicast networks.
By above method, can be realized when media playing apparatus is switched to unicast networks from multicast network, it can
Continue to play program, may be implemented to play uninterrupted.
When media playing apparatus is switched to multicast network from unicast networks, multicast media playing module 301 is according to multicast
Program indexing plays group broadcasting program.Unicast program herein is synchronous with group broadcasting program, therefore, from unicast networks to multicast network
It can be realized the uninterrupted of program broadcasting during switching.
It may include the routing information and I frame index information of unicast program in unicast program indexing, work as media playing apparatus
When being switched to unicast networks from multicast network, unicast media playing module 302 can be according to unicast program in unicast program indexing
Routing information play unicast program, can according to the medium position of I frame index Information locating group broadcasting program playback progress, thus
Play the unicast program since group broadcasting program playback progress.In this way, group broadcasting program and unicast section be can be realized
It is synchronous to realize that group broadcasting program is played with unicast program for the linking of mesh playback progress.
Group broadcasting program index may include the address information of multicast channel, such as IP address or port, when client is from list
When broadcasting network switching to multicast network, multicast media playing module 301 can be indexed according to group broadcasting program in multicast channel
Address information plays group broadcasting program.In this way, client can continue to play multicast section when returning to multicast network
Mesh.Always due to the progress of unicast program and group broadcasting program, program plays uninterrupted.
Multicast network can be the mobile communications network for supporting MBMS or eMBMS.MBMS is more matchmakers defined in 3GPP R6
Body broadcast multicast feature can be modified on original communication network: increase BM-SC network element, to existing ps domain associated nets
Member carries out MBMS function upgrading；EMBMS is the MBMS of evolution version, can be realized in the lte networks.Unicast networks can be broadband
Network obtains unicast program by CDN.MBMS is one of efficient video bearer technology of mobile field, and CDN is in broadband network
The mainstream framework of Video service is provided, realizes that the switching of multicast and unicast has wide practical use on the basis of MBMS and CDN.
The schematic diagram that media of the invention provide one embodiment of device is as shown in Figure 4.401 connect for unicast program indexing
Module is received, 402 be program indexing generation module, and 403 be program indexing release module.Unicast program indexing receiving module 401 from
Unicast networks receive the index information of unicast program, are sent to program indexing generation module 402；Program indexing generation module 402
Unicast program indexing and group broadcasting program index are combined, program indexing is generated, is sent to program indexing release module 403；Section
Program indexing is sent to client by mesh index release module 403.Wherein, group broadcasting program and unicast program are same program.
Such device can generate the program indexing comprising group broadcasting program index and unicast program indexing and be supplied to visitor
Family end guarantees that when playing group broadcasting program, unicast program can be utilized when being switched to unicast networks from multicast network for client
Index obtains program, and program plays uninterrupted.
It may include the routing information and I frame index information of unicast program in unicast program indexing, work as media playing apparatus
When being switched to unicast networks from multicast network, client can be played according to the routing information of unicast program in unicast program indexing
Unicast program, can be according to the medium position of I frame index Information locating group broadcasting program playback progress, to play from group broadcasting program
The unicast program that playback progress starts.In this way, it can be realized the rank of group broadcasting program and unicast program playback progress
It connects, it is synchronous to realize that group broadcasting program is played with unicast program.
Group broadcasting program index may include the address information of multicast channel, such as IP address or port, when client is from list
When broadcasting network switching to multicast network, client can be indexed according to group broadcasting program in multicast channel address information broadcasting group
Broadcast program.In this way, client can continue to play group broadcasting program when returning to multicast network.
Multicast network can be the mobile communications network for supporting MBMS or eMBMS.MBMS is more matchmakers defined in 3GPP R6
Body broadcast multicast feature can be modified on original communication network: increase BM-SC network element, to existing ps domain associated nets
Member carries out MBMS function upgrading；EMBMS is the MBMS of evolution version, can be realized in the lte networks.Unicast networks can be broadband
Network obtains unicast program by CDN.MBMS is one of efficient video bearer technology of mobile field, and CDN is in broadband network
The mainstream framework of Video service is provided, realizes that the switching of multicast and unicast has wide practical use on the basis of MBMS and CDN.
One embodiment of media play system of the invention includes the multicast media playing module in media playing apparatus
Unicast program indexing receiving module, program indexing generation module in device is provided with unicast media playing module and media
With program indexing release module.Unicast program indexing receiving module obtains the unicast program indexing of unicast program from unicast networks,
Program indexing generation module, which is combined unicast program indexing with the group broadcasting program of group broadcasting program index, generates program indexing, program rope
Draw release module and program indexing is published to media playing apparatus.Multicast media playing module in media playing apparatus is according to section
Group broadcasting program index in mesh index obtains group broadcasting program, when media playing apparatus is switched to unicast networks from multicast network,
Unicast media playing module obtains the unicast program synchronous with group broadcasting program according to the unicast program indexing in program indexing.
By above system, media playing apparatus is realized when being switched to unicast networks from multicast network, program plays not
Interruption.
Equally, when media playing apparatus is switched to multicast network from unicast networks, due to unicast program and group broadcasting program
Be it is synchronous, media playing apparatus is indexed according to group broadcasting program to be obtained group broadcasting program that program can also be made to play is uninterrupted.
In one embodiment, multicast network LTE carries out video playing using eMBMS technology, and unicast networks use CDN frame
Structure carries out video playing.As shown in figure 5, in the lte networks, BM-SC (broadcast multicast service center) is that eMBMS framework is important
Component；MBMS-GW is the gateway of eMBMS, is responsible for sending data to base station；ENodeB is the base station of LTE network；MME
(Mobility Management Entity, mobile management entity) is the key control node of 3GPP agreement LTE access network；
MCE (Multi-cell/multicast Coordination Entity, multiple cell/multicast coordination entity) is wireless for carrying out
The distribution of resource.In the broadband network, BRAS (Broadband Remote Access Server, Broadband Remote Access Service
Device) data access of user bandwidth, PDSN (Packet Data Serving Node, packet data serving node) can be completed
For supporting Packet data service.
Program is issued in BM-SC and CDN server simultaneously, is provided group broadcasting program in the lte networks respectively and is existed using CDN
Unicast program is provided in broadband network.Signalling exchange process between client, LTE network and broadband network is as shown in Figure 6.
In step 601, CDN sends unicast program indexing to BM-SC after receiving unicast program.
In step 602, BM-SC gives birth to by the unicast program indexing received in conjunction with group broadcasting program index eMBMS SDP
At program indexing.
In step 603, BM-SC sends client for program indexing according to the program request of client.
In step 604, client plays the group broadcasting program from base station according to the group broadcasting program index in program indexing.
When occurring 605, client leaves multicast network, when being connected to unicast networks, executes step 606.
In step 606, client initiates unicast program to CDN server according to the unicast program indexing in program indexing
Request.
In step 607, CDN sends unicast program to client according to unicast program indexing.
Signaling process in this way can be realized client from multicast network and obtain group broadcasting program index and unicast program
Index, to can continue to play the unicast program synchronous with group broadcasting program when being switched to unicast networks.
In one embodiment, program indexing may include file header, indexing head and index record.Wherein, file header word
Section can be as shown in table 1.
Table 1
Indexing head can be divided into eMBMS SDP and unicast indices head, using TLV label body.EMBMS SDP, that is, group broadcasting program
Index, meets 3GPP TS26.346 agreement.Unicast indices head can be RTP TS index according to the format difference of unicast program
Head is also possible to fragment indexing head.When unicast program is RTP TS format, the field of RTP indexing head can be as shown in table 2.
Table 2
If unicast program is slicing files format, fragment indexing head can be as shown in table 3.
Table 3
Index record part is unicast program index information.For the unicast program of RTP TS format, unicast program indexing
In include base speed I frame index, speed I frame index, P frame index, B frame index, wherein the field of base speed I frame index can be such as table 4
It is shown.
Index record part defines the crucial index information of all subfiles, and different types of index information is different.It is right
In RTP TS, its record is as follows:
Table 4
When the index of I frame can make client be switched to unicast networks, direct request and the broadcasting for navigating to group broadcasting program
Progress, to play unicast program identical with group broadcasting program progress.
For slicing files, index record has recorded the file information of M3U8 or MPD format, and the field of index record can be with
As shown in table 5.
Table 5
For the index record of slicing files index be program M3U8 or MPD format index file.It is such
The field of mode, index record can be brief, the time sent so as to shorten unicast program indexing.
Finally it should be noted that: the above embodiments are merely illustrative of the technical scheme of the present invention and are not intended to be limiting thereof；To the greatest extent
The present invention is described in detail with reference to preferred embodiments for pipe, it should be understood by those ordinary skilled in the art that: still
It can modify to a specific embodiment of the invention or some technical features can be equivalently replaced；Without departing from this hair
The spirit of bright technical solution should all cover within the scope of the technical scheme claimed by the invention.
Claims (12)
1. a kind of media playing method characterized by comprising
Group broadcasting program is played according to the group broadcasting program index in program indexing in multicast network, wherein the program indexing also wraps
Include unicast program indexing；
When being switched to unicast networks from multicast network, unicast is played according to the unicast program indexing in the program indexing
Program；
When being switched to multicast network from unicast networks, multicast is played according to the group broadcasting program index in the program indexing
Program, comprising: group broadcasting program is obtained according to the address information of multicast channel in group broadcasting program index；
Wherein, the group broadcasting program and the unicast program are same program respectively in the multicast network and the unicast networks
Publication.
2. the method according to claim 1, wherein the unicast program indexing includes the road of the unicast program
Diameter information and I frame index information, the group broadcasting program index include the address information of multicast channel.
3. according to the method described in claim 2, it is characterized in that, when being switched to unicast networks from multicast network, according to institute
The routing information of unicast program and I frame index information in unicast program indexing are stated, is obtained since group broadcasting program playback progress
Unicast program.
4. the method according to claim 1, wherein the multicast network is the movement for supporting MBMS or eMBMS
Communication network, the unicast networks are to support the broadband network of CDN service.
5. a kind of media playing apparatus characterized by comprising
Multicast media playing module, for playing group broadcasting program according to the group broadcasting program index in program indexing in multicast network,
Wherein, the program indexing further includes unicast program indexing；When being switched to multicast network from unicast networks, according to the program
Group broadcasting program index in index plays group broadcasting program, comprising: according to the ground of multicast channel in group broadcasting program index
Location acquisition of information group broadcasting program；
Unicast media playing module, for when being switched to unicast networks from multicast network, according to the institute in the program indexing
It states unicast program indexing and plays unicast program；
Wherein, the group broadcasting program and the unicast program are same program respectively in the multicast network and the unicast networks
Publication.
6. device according to claim 5, which is characterized in that the unicast program indexing includes the road of the unicast program
Diameter information and I frame index information, the group broadcasting program index include the address information of multicast channel.
7. device according to claim 6, which is characterized in that when being switched to unicast networks from multicast network, the list
Media player module is broadcast for obtaining according to the routing information of unicast program in the unicast program indexing and I frame index information
Unicast program since group broadcasting program playback progress.
8. device according to claim 5, which is characterized in that the multicast network is the movement for supporting MBMS or eMBMS
Communication network, the unicast networks are to support the broadband network of CDN service.
9. a kind of media provide device characterized by comprising
Unicast program indexing receiving module, for receiving unicast program in the unicast program indexing of unicast networks；
Program indexing generation module, for according to the unicast program indexing and group broadcasting program multicast network group broadcasting program rope
Program indexing is caused into, so as to when user is switched to unicast networks from multicast network, according in the program indexing
Unicast program indexing plays unicast program, when being switched to multicast network from unicast networks, according to the institute in the program indexing
The address information for stating multicast channel in group broadcasting program index plays group broadcasting program；
Program indexing release module, for issuing program indexing；
Wherein, the group broadcasting program and the unicast program are same program.
10. device according to claim 9, which is characterized in that the unicast program indexing includes the unicast program
Routing information and I frame index information, the group broadcasting program index include the address information of multicast channel.
11. device according to claim 9, which is characterized in that the multicast network is the movement for supporting MBMS or eMBMS
Communication network, the unicast networks are broadband network.
12. a kind of media play system, including claim the 5-8 any media playing apparatus and claim 9 or 11
The media provide device.
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| CN111432352A (en) * | 2020-03-30 | 2020-07-17 | 深圳市信锐网科技术有限公司 | Message transmission method, device, equipment and storage medium |
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| CN105979301B (en) * | 2016-07-01 | 2019-02-15 | 江苏省公用信息有限公司 | A kind of compartmentalization program ordering method based on eMBMS multicast network |
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| CA2606344A1 (en) * | 2005-04-27 | 2006-11-09 | Justsystems Canada Inc. | System and method for providing data formatting |
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| CN1929596A (en) * | 2005-09-06 | 2007-03-14 | 中兴通讯股份有限公司 | Method and system for realizing time-moving television |
| CN102123131A (en) * | 2010-01-08 | 2011-07-13 | 中兴通讯股份有限公司 | Method and system for maintaining continuity of stream media service |
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| CN111432352A (en) * | 2020-03-30 | 2020-07-17 | 深圳市信锐网科技术有限公司 | Message transmission method, device, equipment and storage medium |
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