CN102611945B - Streaming media slicing method, slicing server and streaming media demand system - Google Patents
Streaming media slicing method, slicing server and streaming media demand system Download PDFInfo
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Abstract
The invention discloses a streaming media slicing method, aiming at realizing individual configuration in streaming media slicing. The streaming media slicing method comprises the following steps of: receiving a streaming media file request message sent by a client, analyzing and acquiring domain name information of the client, and acquiring corresponding configuration information according to the domain name information, wherein the configuration information contains slice size information when the streaming media file is sliced; determining the number of key frames contained in a slice according to the slice size information, slicing the streaming media file according to the number of the key frames contained in the slice, and generating a slice file; and caching the slice file into caching equipment. The invention simultaneously discloses a streaming media slicing server and a streaming media demand system.
Description
Technical field
The present invention relates to stream media technology field, relate in particular to a kind of Streaming Media dicing method, Streaming Media section server and demand stream media system.
Background technology
At present, user is in the time that content-based distributing network (CDN) carries out streaming media on demand, adopt microtomy to carry out slicing treatment to the files in stream media of program request, again the Streaming Media after section is encapsulated as to virtual file buffer memory to caching server, the virtual file data that by caching server, section formed again return to user, thereby user's access is directed to caching server, user can obtain the content needing nearby, avoid the source server through various routing device access stream media files place, reached the effect of accelerating access speed.Wherein, taking key frame (being I frame) as start frame, the one section of video being made up of multiple frame of video is called a section.
The existing mode that Streaming Media is cut into slices is to cut into slices for each key frame, key frame often detected, and just taking this key frame as start frame, the former frame of next key frame is that end frame forms a section.This single slicing mode is fixed and less the data traffic that the unit interval produces substantially, cannot make full use of the transmission performance of TCP/IP network, and can not realize user's personal settings.
Summary of the invention
The invention provides a kind of Streaming Media dicing method, Streaming Media section server and demand stream media system, in order to realize the personalization configuration of Streaming Media slicing mode.
The concrete technical scheme that the embodiment of the present invention provides is as follows:
A kind of Streaming Media dicing method, comprising:
Receive the files in stream media request message that client sends, resolve and obtain the domain-name information of described client;
The configuration information corresponding according to domain name acquisition of information, includes slice size information when described files in stream media is cut into slices in described configuration information;
Determine according to described slice size information the number of key frames that section comprises, the number of key frames comprising according to described section is carried out slicing treatment to described files in stream media, generates section file and is buffered in buffer memory device.
A kind of Streaming Media section server, comprising:
Receiver module, for receiving the files in stream media request message of client transmission, resolves and obtains the domain-name information of described client;
Acquisition module, for the configuration information corresponding according to domain name acquisition of information, includes slice size information when described files in stream media is cut into slices in described configuration information;
Processing module, for determining according to described slice size information the number of key frames that section comprises, the number of key frames comprising according to described section is carried out slicing treatment to described files in stream media, generates section file and is buffered in buffer memory device.
A kind of demand stream media system, comprising:
Client, for sending files in stream media request message to buffer memory device, carries the domain-name information of described client in described files in stream media request message;
Buffer memory device, the files in stream media request message sending for receiving described client, there is not the files in stream media that described files in stream media request message asks during in described buffer memory device this locality, described files in stream media request message is transmitted to section server, and receive the section file of section server transmission and be buffered in this locality, and described section file is sent to described client;
Section server, be used for receiving described files in stream media request message, resolve and obtain the domain-name information of described client, obtain corresponding configuration information according to this domain-name information from support server, in described configuration information, include slice size information when described files in stream media is cut into slices, determine according to described slice size information the number of key frames that section comprises, the number of key frames comprising according to described section is carried out slicing treatment to described files in stream media, generates section file and is buffered in buffer memory device;
Support server, for preserving the configuration information corresponding with the domain-name information of client at local data base.
Based on technique scheme, in the embodiment of the present invention, receiving after the files in stream media request of client transmission, resolve and obtain the domain name signal of client, obtain corresponding configuration information according to this domain-name information, in this configuration information, include slice size information when files in stream media is cut into slices, determine according to slice size information the number of key frames that section comprises again, the number of key frames comprising according to section is carried out slicing treatment to files in stream media, generate section file and be buffered in buffer memory device, thereby can be by the configuration information adjustment number of key frames comprising of cutting into slices be set, realize the personalization configuration of files in stream media slicing mode.
Brief description of the drawings
Fig. 1 is demand stream media system Organization Chart in the embodiment of the present invention;
Fig. 2 is Streaming Media section server architecture schematic diagram in the embodiment of the present invention;
Fig. 3 is the method flow diagram of Streaming Media section in the embodiment of the present invention.
Embodiment
In order to realize the personalization configuration of files in stream media slicing mode, the embodiment of the present invention provides a kind of Streaming Media dicing method, Streaming Media section server and demand stream media system.
Below in conjunction with accompanying drawing, the preferred embodiment of the present invention is elaborated.
As shown in Figure 1, in the embodiment of the present invention, demand stream media system comprises client 10, buffer memory device 11, section server 12 and support server 13, wherein,
Wherein, support server 13 also receives the configuration information of the domain name setting of corresponding client 10 for the application programming interface by local (api interface), and the configuration information that client 10 is arranged is kept in local database.
Wherein, the request message that obtains that section server 12 also sends for asking the configuration information corresponding with domain-name information to support server 13 for interval to schedule; What support server 13 sent according to section server 12 obtains request message, return to the configuration information corresponding with domain-name information, the configuration information that the api interface that this configuration information provides by support server 13 for client 10 arranges, or for setting in advance the default configuration information in support server 13.
Preferably, when configuration information corresponding to the domain-name information with client 10 of preserving in support server 13 is two or more, section server 12 obtains each configuration information that domain-name information is corresponding, and determine respectively according to the slice size information comprising in each configuration information the number of key frames that section comprises, according to each number of key frames of determining, files in stream media is carried out to slicing treatment, generate the section file corresponding with each number of key frames and be buffered in respectively in buffer memory device 11.
Particularly, when section server 12 generates the section file corresponding with each number of key frames and is buffered in respectively in buffer memory device 11, class indication using the slice size information that comprises in each configuration information as respective slice file, is buffered in each section document classification in buffer memory device 11; Client 10 sends and in files in stream media request message, also carries the first slice size information to buffer memory device 11; The first slice size information of carrying in the files in stream media request message that buffer memory device 11 sends according to client 10, obtains the section file cocurrent of first code check corresponding with the first slice size information and gives client 10 from this locality.
Preferably, client 10 is in the time that the data stuffing speed of judging local cache is less than the data rate of decay, the first slice size information of carrying in files in stream media request message is revised as to the second slice size information, and the code stream that the section of the second code check corresponding to this second slice size information forms is less than the code stream that the section file of the first code check forms; Or, client 10 is in the time that the data stuffing speed of judging local cache is greater than the data rate of decay, the first slice size information of carrying in files in stream media request message is revised as to the 3rd slice size information, and the code stream that the section file of third yard rate corresponding to the 3rd slice size information forms is greater than the code stream that the section file of the first code check forms.
Based on said system framework, as shown in Figure 2, the Streaming Media section server providing in the embodiment of the present invention mainly comprises with lower module:
Receiver module 201, for receiving the files in stream media request message of client transmission, resolves and obtains the domain-name information of client;
Wherein, processing module 203 sends the request message that obtains for asking the configuration information corresponding with domain-name information specifically for interval to schedule to support server, and receive support server according to obtaining request message, configuration information that return, corresponding with domain-name information, the configuration information that the api interface that this configuration information provides by support server for client arranges, or for setting in advance the default configuration information in support server.
Preferably, in the files in stream media request message that client sends, also include the platform information of customer end adopted, processing module 203 is carried out slicing treatment in the number of key frames comprising according to section to files in stream media, when generating section file and being buffered in buffer memory device, the number of key frames comprising according to section is carried out slicing treatment to files in stream media, the video data and the voice data that section are obtained according to the platform information of customer end adopted encapsulate, obtain and the section file of the platform corresponding format of customer end adopted, and buffer memory is to buffer memory device.
Wherein, acquisition module 202, in the time that configuration information corresponding to domain-name information is two or more, obtains each configuration information that domain-name information is corresponding; Processing module 203 determines respectively according to the slice size information comprising in each configuration information the number of key frames that section comprises, according to each number of key frames of determining, files in stream media is carried out to slicing treatment, generate the section file corresponding with each number of key frames and be buffered in respectively in buffer memory device.
Preferably, when processing module 203 generates the section file corresponding with each number of key frames and is buffered in respectively in buffer memory device, class indication using the slice size information that comprises in each configuration information as respective slice file, is buffered in each section document classification in buffer memory device; In the files in stream media request message that the client that receiver module 201 receives sends, also carry the first slice size information, this first slice size information is obtained first code check corresponding with the first slice size information for buffer memory device section file cocurrent from this locality is given client.
Based on said system framework, as shown in Figure 3, in the embodiment of the present invention, the method detailed flow process that Streaming Media is cut into slices is as follows:
Step 301: receive the files in stream media request message that client sends, resolve and obtain the domain-name information of client.
In practical application, in the files in stream media request message that client sends, can also comprise the platform information of customer end adopted.
Wherein, client is not limited to a kind of terminal equipment, for example, client can be the terminal of the Apple platform of employing, or the terminal of employing flash platform, or the terminal of employing Silverlight platform, also can be using TV (TV) as client.
Step 302: obtain corresponding configuration information according to domain-name information, include slice size information when files in stream media is cut into slices in this configuration information.
Wherein, while obtaining corresponding configuration information according to domain-name information, interval sends the request message that obtains for asking the configuration information corresponding with domain-name information to support server to schedule, and receive support server according to obtaining that request message returns, corresponding with domain-name information configuration information, the configuration information that the api interface that this configuration information provides by support server for client arranges, or for setting in advance the default configuration information in support server.
Step 303: determine according to slice size information the number of key frames that section comprises, the number of key frames comprising according to section is carried out slicing treatment to files in stream media, generates section file and is buffered in buffer memory device.
In the embodiment of the present invention, slice size information can be directly key frame quantity, can be also the time span information of section, in practical application, can be also other information that can represent slice size, for example, and the directly size for cutting into slices.
Wherein, if slice size information is key frame quantity, the number of key frames this key frame quantity being comprised as section; If slice size information is the time span of section, determine the number of frame of video corresponding to time span according to video frame rate, further determine the number of the key frame wherein comprising, this number of key frames is defined as to the number of the key frame that section comprises.
Preferably, while including the platform information of customer end adopted in the files in stream media request message sending in client, the key frame data comprising according to section is carried out slicing treatment to files in stream media, and the video data and the voice data that section are obtained according to the platform information of customer end adopted encapsulate, obtain and the section file of the platform corresponding format of customer end adopted, and buffer memory is to buffer memory device.Thereby can ensure that client is can be in local normal play from buffer memory device obtains section.
For example, in the time of customer end adopted Apple platform, video data and the voice data that section can be obtained are encapsulated as ts form; In the time of customer end adopted flash platform, video data and the voice data that section can be obtained are encapsulated as f4f form; In the time of customer end adopted Silverlight platform, video data and the voice data that section can be obtained are encapsulated as MP4 form; In the time that client is TV, video data and the voice data that section can be obtained are encapsulated as ts form.
In practical application, terminal can send URL(uniform resource locator) (the Uniform Resource Locator that meets specification by HTML (Hypertext Markup Language) (http protocol), URL) caching server in the CDN of location, caching server can be judged the terminal type sending request according to the information of User-Agent header field in http protocol, and further provides the files in stream media (file of cutting into slices) of corresponding format according to terminal type for this terminal.For example,, while judging terminal as panel computer according to the information of http protocol User-Agent header field, for this terminal provides the section file of TS form.
In practical application, the configuration information that domain-name information is corresponding can be multiple.
Preferably, in the time that configuration information corresponding to domain-name information is two or more, obtain each configuration information that domain-name information is corresponding, and determine respectively according to the slice size information comprising in each configuration information the number of key frames that section comprises, according to each number of key frames of determining, files in stream media is carried out to slicing treatment, generate the section file corresponding with each number of key frames and be buffered in respectively in buffer memory device.
Particularly, when generating the section file corresponding with each number of key frames and being buffered in respectively in buffer memory device, class indication using the slice size information that comprises in each configuration information as respective slice file, is buffered in each section document classification in buffer memory device.Wherein, in the files in stream media request message that client sends, also carry the first slice size information, this first slice size information is obtained the section file of first code check corresponding with the first slice size information from this locality for buffer memory device.
The first slice size information of carrying in the files in stream media request message that preferably, client sends can be determined according to the data volume situation of change of client terminal local buffer memory.
Particularly, client is in the time that the data stuffing speed of judging local cache is less than the data rate of decay, the first slice size information of carrying in files in stream media request message is revised as to the second slice size information, and the code stream that the section of the second code check corresponding to this second slice size information forms is less than the code stream that the section file of the first code check forms; Or, client is in the time that the data stuffing speed of judging local cache is greater than the data rate of decay, the first slice size information of carrying in files in stream media request message is revised as to the 3rd slice size information, and the code stream that the section file of third yard rate corresponding to the 3rd slice size information forms is greater than the code stream that the section file of the first code check forms.
Based on technique scheme, in the embodiment of the present invention, receiving after the files in stream media request of client transmission, resolve and obtain the domain name signal of client, obtain corresponding configuration information according to this domain-name information, in this configuration information, include slice size information when files in stream media is cut into slices, determine according to slice size information the number of key frames that section comprises again, the number of key frames comprising according to section is carried out slicing treatment to files in stream media, generate section file and be buffered in buffer memory device, thereby can be by the configuration information adjustment number of key frames comprising of cutting into slices be set, realize the personalization configuration of Streaming Media slicing mode.
Simultaneously, the corresponding multiple configuration informations of domain-name information, according to the slice size information comprising in each configuration information, Streaming Media is cut into slices and formed the section file of different code checks respectively, and using slice size information as class indication, the each section document classification forming is kept in buffer memory device, and when client sends files in stream media request message, carry the first slice size information, thereby can be according to the section file of this first slice size acquisition of information phase code rate, and this first slice size information can be determined according to the data situation in client-cache, in the time that the data stuffing speed of client-cache is less than the data rate of decay, decision network transmission performance is poor, obtain thereby be adjusted into the section file that code check is less, and in the time that the data stuffing speed of client-cache is greater than the data rate of decay, decision network transmission performance is better, obtain thereby be adjusted into the section file that code check is larger, thereby can adjust in real time the section file size that client is obtained according to network transmission performance, make network transmission performance optimization.
The method of the flexible switching program request that the embodiment of the present invention is provided is applied in CDN network, can effectively save the disk space of caching server, and realization is docked with the good of caching server, improve cache hit rate, and shorten response time to client-requested, significant response is carried out in the action that can carry out video dragging to client.
Obviously, those skilled in the art can carry out various changes and modification and not depart from the spirit and scope of the present invention the present invention.Like this, if these amendments of the present invention and within modification belongs to the scope of the claims in the present invention and equivalent technologies thereof, the present invention is also intended to comprise these changes and modification interior.
Claims (16)
1. a Streaming Media dicing method, is characterized in that, comprising:
Receive the files in stream media request message that client sends, resolve and obtain the domain-name information of described client;
The configuration information corresponding according to domain name acquisition of information, comprising: interval sends the request message that obtains for asking the configuration information corresponding with domain name information to support server to schedule; Receive described support server according to described in obtain that request message returns, corresponding with domain name information configuration information, the configuration information that the application programming interface that described configuration information provides by described support server for described client arranges, or for setting in advance the default configuration information in described support server, wherein, in described configuration information, include slice size information when described files in stream media is cut into slices;
Determine according to described slice size information the number of key frames that section comprises, the number of key frames comprising according to described section is carried out slicing treatment to described files in stream media, generates section file and is buffered in buffer memory device.
2. the method for claim 1, is characterized in that, the configuration information corresponding according to domain name acquisition of information, comprising:
In the time that configuration information corresponding to domain name information is two or more, obtain each configuration information corresponding to domain name information, and determine respectively according to the slice size information comprising in each configuration information the number of key frames that section comprises, according to each number of key frames of determining, described files in stream media is carried out to slicing treatment, generate the section file corresponding with each number of key frames and be buffered in respectively in buffer memory device.
3. method as claimed in claim 2, it is characterized in that, when generating the section file corresponding with each number of key frames and being buffered in respectively in buffer memory device, class indication using the slice size information that comprises in each configuration information as respective slice file, is buffered in each section document classification in buffer memory device;
In the files in stream media request message that the described client receiving sends, also carry the first slice size information, described the first slice size information is obtained first code check corresponding with described the first slice size information for described buffer memory device section file cocurrent from this locality is given described client.
4. method as claimed in claim 3, it is characterized in that, described client is in the time that the data stuffing speed of judging local cache is less than the data rate of decay, the first slice size information of carrying in described files in stream media request message is revised as to the second slice size information, and the code stream that the section of the second code check corresponding to described the second slice size information forms is less than the code stream that the section file of described the first code check forms;
Or, described client is in the time that the data stuffing speed of judging local cache is greater than the data rate of decay, the first slice size information of carrying in described files in stream media request message is revised as to the 3rd slice size information, and the code stream that the section file of third yard rate corresponding to described the 3rd slice size information forms is greater than the code stream that the section file of described the first code check forms.
5. the method as described in claim 1-4 any one, is characterized in that, determines according to described slice size information the number of key frames that section comprises, and comprising:
If described slice size information is key frame quantity, the number of key frames this key frame quantity being comprised as described section;
If described slice size information is the time span of section, determine the number of frame of video corresponding to described time span according to video frame rate, further determine the number of the key frame wherein comprising, this number of key frames is defined as to the number of the key frame that described section comprises.
6. method as claimed in claim 5, is characterized in that, also comprises: the platform information of described customer end adopted in the files in stream media request message that described client sends;
The number of key frames comprising according to described section is carried out slicing treatment to described files in stream media, generates section file and is buffered in buffer memory device, comprising:
The number of key frames comprising according to described section is carried out slicing treatment to described files in stream media, the video data and the voice data that section are obtained according to the platform information of described customer end adopted encapsulate, obtain and the section file of the platform corresponding format of described customer end adopted, and buffer memory is to buffer memory device.
7. a Streaming Media section server, is characterized in that, comprising:
Receiver module, for receiving the files in stream media request message of client transmission, resolves and obtains the domain-name information of described client;
Acquisition module, for the configuration information corresponding according to domain name acquisition of information, sends the request message that obtains for asking the configuration information corresponding with domain name information specifically for interval to schedule to support server; Receive described support server according to described in obtain request message, configuration information that return, corresponding with domain name information, the configuration information that the application programming interface that described configuration information provides by described support server for described client arranges, or for setting in advance the default configuration information in described support server, wherein, in described configuration information, include slice size information when described files in stream media is cut into slices;
Processing module, for determining according to described slice size information the number of key frames that section comprises, the number of key frames comprising according to described section is carried out slicing treatment to described files in stream media, generates section file and is buffered in buffer memory device.
8. server as claimed in claim 7, is characterized in that, described acquisition module also, in the time that configuration information corresponding to domain name information is two or more, obtains each configuration information corresponding to domain name information;
Described processing module also determines respectively for the slice size information comprising according to each configuration information the number of key frames that section comprises, according to each number of key frames of determining, described files in stream media is carried out to slicing treatment, generate the section file corresponding with each number of key frames and be buffered in respectively in buffer memory device.
9. server as claimed in claim 8, it is characterized in that, described processing module is also for generating the section file corresponding with each number of key frames and while being buffered in buffer memory device respectively, class indication using the slice size information that comprises in each configuration information as respective slice file, is buffered in each section document classification in buffer memory device;
In the files in stream media request message that the described client that described receiver module receives sends, also carry the first slice size information, described the first slice size information is obtained first code check corresponding with described the first slice size information for described buffer memory device section file cocurrent from this locality is given described client.
10. the server as described in claim 7-9 any one, it is characterized in that, described processing module specifically for: according to described slice size information determine section comprise number of key frames time, if described slice size information is key frame quantity, the number of key frames this key frame quantity being comprised as described section;
If described slice size information is the time span of section, determine the number of frame of video corresponding to described time span according to video frame rate, further determine the number of the key frame wherein comprising, this number of key frames is defined as to the number of the key frame that described section comprises.
11. servers as claimed in claim 10, is characterized in that, also comprise: the platform information of described customer end adopted in the files in stream media request message that described client sends;
Described processing module specifically for: in the number of key frames comprising according to described section, described files in stream media is carried out to slicing treatment, when generating section file and being buffered in buffer memory device, the number of key frames comprising according to described section is carried out slicing treatment to described files in stream media, the video data and the voice data that section are obtained according to the platform information of described customer end adopted encapsulate, obtain and the section file of the platform corresponding format of described customer end adopted, and buffer memory is to buffer memory device.
12. 1 kinds of demand stream media systems, is characterized in that, comprising:
Client, for sending files in stream media request message to buffer memory device, carries the domain-name information of described client in described files in stream media request message;
Buffer memory device, the files in stream media request message sending for receiving described client, there is not the files in stream media that described files in stream media request message asks during in described buffer memory device this locality, described files in stream media request message is transmitted to section server, and receive the section file of section server transmission and be buffered in this locality, and described section file is sent to described client;
Section server, be used for receiving described files in stream media request message, resolve and obtain the domain-name information of described client, obtain corresponding configuration information according to this domain-name information from support server, in described configuration information, include slice size information when described files in stream media is cut into slices, determine according to described slice size information the number of key frames that section comprises, the number of key frames comprising according to described section is carried out slicing treatment to described files in stream media, generates section file and is buffered in buffer memory device; And
Described section server also sends for asking and the request message that obtains of the corresponding configuration information of domain name information to support server for interval to schedule;
Support server, for preserving the configuration information corresponding with the domain-name information of client at local data base; And
Described support server also obtains request message described in sending according to described section server, return to the configuration information corresponding with domain name information, the configuration information that the application programming interface that described configuration information provides by described support server for described client arranges, or for setting in advance the default configuration information in described support server.
13. systems as claimed in claim 12, it is characterized in that, described support server also receives the configuration information of the domain name setting of corresponding described client for the application programming interface by local, and the configuration information of described client setting is kept in local database.
14. systems as claimed in claim 12, is characterized in that, in described support server, the configuration information corresponding with domain-name information described client that preserve is two or more;
Described section server is also for obtaining each configuration information corresponding to domain name information, and determine respectively according to the slice size information comprising in each configuration information the number of key frames that section comprises, according to each number of key frames of determining, described files in stream media is carried out to slicing treatment, generate the section file corresponding with each number of key frames and be buffered in respectively in buffer memory device.
15. systems as claimed in claim 14, it is characterized in that, when described section server generates the section file corresponding with each number of key frames and is buffered in respectively in buffer memory device, class indication using the slice size information that comprises in each configuration information as respective slice file, is buffered in each section document classification in buffer memory device;
Described client sends in files in stream media request message and also carries the first slice size information to buffer memory device;
The first slice size information of carrying in the files in stream media request message that described buffer memory device sends according to described client, obtains the section file cocurrent of first code check corresponding with described the first slice size information and gives described client from this locality.
16. systems as claimed in claim 15, it is characterized in that, described client is in the time that the data stuffing speed of judging local cache is less than the data rate of decay, the first slice size information of carrying in described files in stream media request message is revised as to the second slice size information, and the code stream that the section of the second code check corresponding to described the second slice size information forms is less than the code stream that the section file of described the first code check forms;
Or, described client is in the time that the data stuffing speed of judging local cache is greater than the data rate of decay, the first slice size information of carrying in described files in stream media request message is revised as to the 3rd slice size information, and the code stream that the section file of third yard rate corresponding to described the 3rd slice size information forms is greater than the code stream that the section file of described the first code check forms.
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