WO2012071931A1

WO2012071931A1 - Method and system for dynamically inserting cut-in program into segmented program

Info

Publication number: WO2012071931A1
Application number: PCT/CN2011/079953
Authority: WO
Inventors: 陈光亮; 戴志军; 王芳
Original assignee: 中兴通讯股份有限公司
Priority date: 2010-12-02
Filing date: 2011-09-21
Publication date: 2012-06-07
Also published as: CN102487453A

Abstract

A method and a system for dynamically inserting a cut-in program into a segmented program. The method comprises: segmenting a cut-in program, generating a cut-in program playlist; inserting the cut-in program playlist into the segmentation data of a regular program; when broadcasting the regular program on the basis of a regular program playlist, if the cut-in program playlist is acquired from any segmentation data of the regular program, then broadcasting first the cut-in program on the basis of the cut-in program playlist, and when the cut-in program broadcast is completed, continuing the regular program broadcast on the basis of the regular program playlist. This technical solution allows the true implementation of dynamic insertion of the cut-in program, and has a high flexibility and practicality.

Description

Method and system for dynamically inserting programs in segmented programs

Technical field

The present invention relates to a program insertion technique, and more particularly to a method and system for realizing dynamic insertion of a program when a segmented program is transmitted in a multimedia system.

Background technique

With the development of communication technology, the application of multimedia technology is becoming more and more extensive. The segmented program refers to segmenting the program during the production of the program to generate a plurality of segmented programs and playlists. When playing, the playlist is first acquired, and then the segmented program is sequentially played according to the playlist. This method can easily modify and replace the program content, and is compatible with the existing Content Delivery Network (CDN) system.

The existing segmented program advertisement insertion technology is to add an advertisement segmentation program before the segmentation program is completed, and insert the description information of the advertisement segment in the playlist before the client obtains the playlist. When the client plays the program, the playlist is first obtained, and then the playlist is played in order, and the content of the advertisement will be displayed. However, once the client obtains the playlist and plays the program in sequence according to the description of the playlist, it will become very difficult to insert a commercial for the client during the broadcast of the program, especially on the web CDN system, since the web server is Stateless, it is more difficult to insert ads into customers who are watching segmented shows.

Summary of the invention

The technical problem to be solved by the present invention is to provide a method and system for dynamically inserting programs in a segmented program. Even if the client is playing a program, the program can be inserted, and the program can be dynamically inserted, which is very flexible. practical.

A method for dynamically inserting a program in a segmented program, comprising:

Segmenting the interstitial program to generate a playlist of the interstitial program;

Inserting a playlist of the interstitial program into segment data of a normal program;

When playing a normal program according to a playlist of a normal program, if it is in a certain normal program The playlist of the interstitial program is obtained in the segment data, and the interlaced program is first played according to the playlist of the interstitial program, and after the play of the interlaced program is completed, the normal program is continued to be played according to the playlist of the normal program.

The method also includes:

Generating a playlist of a new interstitial program according to the new interstitial program, positioning a playlist inserted into the interstitial program, updating a playlist of the interstitial program to a playlist of the new interstitial program, to update the interstitial program.

The method also includes:

Positioning to a position of a playlist inserted into the interstitial program, deleting a playlist of the interstitial program to delete the interstitial program.

The steps of segmenting the interstitial program include:

The interlaced program is divided into one or more logical segment data or physical segment data according to logical or physical segmentation, and each segment data starts with a random access unit;

The decoding information of each segment data is inserted into each segment data.

The method also includes:

Before inserting the playlist of the interstitial program into the segmentation data of the normal program, searching for a playlist of the normal program according to the preset insertion time, and obtaining segmentation data of the normal program played when the insertion time is reached, to determine The segmentation data of the normal program inserted by the playlist of the interstitial program.

Wherein: inserting the playlist of the interstitial program into the segment data of the normal program comprises: inserting an interstitial identifier in a normal program segment of the playlist inserted into the interstitial program; correspondingly, according to the normal program When the playlist plays a normal program, the step of acquiring the playlist of the interstitial program in the segment data of a normal program includes: when playing a normal program according to the playlist of the normal program, if it is determined that a normal program is The segmentation data includes the insertion identifier, and the playlist of the inserted program is obtained from the segmentation data of the normal program.

The step of inserting the playlist of the interstitial program into the segment data of the normal program includes: determining a data length of the playlist of the interstitial program, and if it is greater than a preset data length, compressing the playlist, Insert the compressed playlist and a compressed logo into the positive In the segmentation data of the regular program;

Correspondingly, when the normal program is played according to the playlist of the normal program, the step of acquiring the playlist of the interstitial program in the segment data of a normal program includes: when playing the normal program according to the playlist of the normal program, If it is determined that the segmentation data of a normal program includes the compression identifier, the playlist of the interstitial program is obtained from the segment data of the normal program, and then decompressed.

The step of inserting the playlist of the interstitial program into the segment data of the normal program includes: generating a uniform resource locator URL of the playlist of the interstitial program; and playing the playlist of the interstitial program in the form of its URL Insert into the segmentation data of the normal program;

Correspondingly, when the normal program is played according to the playlist of the normal program, the step of acquiring the playlist of the interstitial program in the segment data of a certain normal program comprises: acquiring in the segment data of a normal program When the URL is obtained, the playlist of the interstitial program is acquired according to the URL.

A system for dynamically inserting a program in a segmented program, comprising: a front-end program segmentation device, a program insertion processing device, and a terminal program playback device, wherein:

The front-end program segmentation device is configured to: segment the intervening program to generate a playlist of the interstitial program;

The program insertion processing device is configured to: insert a playlist of the interstitial program into segment data of a normal program;

The terminal program playing device is configured to: when the normal program is played according to the playlist of the normal program, if the playlist of the interstitial program is acquired in the segment data of a certain normal program, first according to the interstitial program The playlist plays the inserted program, and after the play of the inserted program is completed, the normal program is continued to be played according to the playlist of the normal program.

Wherein: the program insertion processing device is further configured to:

Wherein: the program insertion processing device is further configured to: Positioning to a position of a playlist inserted into the interstitial program, deleting a playlist of the interstitial program to delete the interstitial program.

The front-end program segmentation device includes: a first segment processing module and a second segment processing module, where:

The first segment processing module is configured to: divide the inserted program into one or more logical segment data or physical segment data according to logical or physical segmentation, and each segment data starts with a random access unit;

The second segment processing module is configured to: insert decoding information of each segment data into each segment data.

Wherein: the program insertion processing device is further configured to:

According to the preset insertion time, the playlist of the normal program is searched, and the segmentation data of the normal program played at the time of the insertion is obtained, and the segmentation data of the normal program inserted by the playlist of the interstitial program is determined.

Wherein: the program insertion processing device is further configured to: insert a cut-in identifier in a normal program segment inserted into a playlist of the interstitial program;

The terminal program playing device is further configured to: when the normal program is played according to the playlist of the normal program, if it is determined that the segment data of a normal program includes the insertion identifier, the segment data from the normal program Obtaining a playlist of the interstitial program.

The program insertion processing device is further configured to: before inserting the playlist of the interstitial program, determining a data length of the playlist of the interstitial program, if it is greater than a preset data length, compressing the program Inserting a playlist of the compressed interstitial program and a compressed identifier into the segmentation data of the normal program;

The terminal program playing device is further configured to: when the normal program is played according to the playlist of the normal program, if it is determined that the segmentation data of a normal program includes the compressed identifier, the segment data from the normal program After the playlist of the interstitial program is obtained, it is also decompressed.

The front-end program segmentation device is further configured to: generate a uniform resource locator URL of the playlist of the interstitial program; The program insertion processing device is further configured to: insert a URL of the interstitial program as a playlist of the interstitial program into segment data of a normal program;

The terminal program playing device is further configured to: when the URL is obtained in the segment data of a normal program, acquire a playlist of the interstitial program according to the URL.

The method and system for dynamically inserting a program in a segmented program according to an embodiment of the present invention can realize the insertion of a program even if the client is playing a program, and can truly realize the dynamic insertion of the program, which is very flexible and practical, and can Applicable to web CDN system. BRIEF abstract

1 is a flowchart of a method for dynamically inserting a program in a segmented program according to an embodiment of the present invention; FIG. 2 is a flowchart of a method for segmenting an interpolated program according to an embodiment of the present invention; A flow chart of a method for dynamically inserting a program for a web CDN system;

4 is a schematic diagram of a method for dynamically inserting a program in a segmented program in a web CDN system according to an embodiment of the present invention;

5 is a system block diagram of a dynamic insertion program in a segmented program according to an embodiment of the present invention; FIG. 6 is a flow chart of a method for implementing insertion of an advertisement program through a web CDN system according to an application example of the present invention;

7 is a schematic diagram of an MPEG-2 TS segment of a URL encapsulating an advertisement playlist according to an application example of the present invention;

Fig. 8 is a schematic diagram showing an implementation process of inserting an advertisement program through a web CDN system according to an application example of the present invention.

Preferred embodiment of the invention

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

Referring to FIG. 1, there is shown a dynamic insertion program in a segmented program according to an embodiment of the present invention. Method, including the steps:

Step S101: segment the intervening program to generate a playlist of the interstitial program;

Step S102: Insert the playlist of the interstitial program into the segment data of the normal program; Step S103: When playing a normal program according to the playlist of the normal program, if the game is obtained in the segment data of a certain normal program The playlist of the interstitial program first plays the interlaced program according to the playlist of the interstitial program, and after the play of the interstitial program is completed, continues to play the normal program according to the playlist of the normal program.

The present invention subtly inserts a playlist of the inserted program into the segment data of the normal program, and the insert processing does not modify the playlist of the normal program, so that even when the program is played by the client, the insert processing can be performed, thereby real Dynamic insertion is very flexible.

In the specific implementation, the step S101 may be as shown in FIG. 2, including the steps:

Step S201: The inserted program is divided into one or more logical segment data or physical segment data according to logical or physical segmentation, and each segment data starts with a random access unit;

Each segmentation data begins with a random access unit to ensure that each segmentation data can be independently decoded and played. For audio data, any data unit is a random access unit. For video data, a random access unit refers to a key frame.

Step S202: Insert decoding information of each segment data into each segment data.

Preferably, the decoding information of each piece of segment data is separately inserted in front of each piece of segment data. In the decoding process, for each piece of segment data, the decoding information of the segment data is obtained first, and then decoded according to the decoding information. The segmentation data. Of course, the decoding information of each segment data may be separately inserted into other locations of each segment data, and in the parsing process, the decoding information is located by means of a pointer or the like, and the segment data is decoded according to the data.

Then, the advertisement playlist describing the segmentation data can be generated according to the segmentation data obtained after the process of step S202.

Wherein, when step S102 is performed, an interstitial identifier may also be inserted in the normal program segment of the playlist inserted into the interstitial program. When the step S103 is performed, if it is determined that the segmentation data of a certain normal program includes the interpolation identifier, the playlist of the interstitial program is acquired from the segmentation data of the normal program. In the step S102, in order to save the network transmission data, preferably, when the playlist of the interstitial program is greater than a preset data length, it may be compressed, and then the compressed interlaced program is The playlist and its compressed identification are inserted into the segmentation data of the normal program. When the step S103 is performed, if the compression identifier is determined, the compressed playlist of the inserted program needs to be decompressed to obtain a playlist of the inserted program.

Before step S102, the method further includes: searching for a playlist of the normal program according to the preset insertion time, obtaining segment data of the normal program played when the insertion time is reached, and determining to insert the playlist of the inserted program. Segmentation data for normal programs. Thereby, when the insertion time is reached, the interlaced program can be played, and the timed insertion program can be realized.

After step S102, the inserted program may be updated or deleted, and the specific processing manner is as follows:

When the interstitial program is updated, the playlist of the interstitial program may be updated to the new interstitial by updating a playlist of the new interstitial program according to the new interstitial program, positioning the playlist inserted into the interstitial program The way the playlist of the program is implemented.

When the interstitial program is deleted, the playlist of the interstitial program can be deleted by locating the position of the playlist inserted into the interstitial program.

In order to enable the above-mentioned program insertion method in the embodiment of the present invention to be effectively applied to the web CDN system to implement dynamic insertion of programs in the segmented program, the present invention also proposes the following solution. As shown in FIG. 3, the method includes the following steps:

Step S301: Generate a uniform resource locator URL of the playlist of the interstitial program, to

The URL identifies a playlist of the interstitial program;

Step S302: When performing the program insertion processing, replacing the playlist of the interstitial program with the URL of the playlist of the interstitial program, performing an insert, update, and delete operation;

Step S303: When the URL is obtained in the segment data of a normal program during the program playing process, the playlist of the interstitial program is obtained according to the URL.

In addition, the playlist of the normal program may be identified by the URL of the playlist of the normal program, so that the playlist of the normal program may be acquired according to the URL of the playlist of the normal program. Referring to FIG. 4, the figure shows a schematic diagram of a process in which a server interacts with a client in a web CDN system to dynamically insert a program in a segmented program.

In order to implement the above method, an embodiment of the present invention further provides a system for dynamically inserting a program in a segmented program. As shown in FIG. 5, the system includes: a front-end program segmentation device, a program insertion processing device, and a terminal program playback device. Wherein: the front-end program segmentation device is configured to: segment the intervening program to generate a playlist of the interstitial program;

The program insertion processing device may be further configured to: generate a playlist of a new interstitial program according to the new interstitial program, locate a location of the playlist inserted into the interstitial program, and update the playlist of the interstitial program to A playlist of the new interstitial program to update the interstitial section.

The program insertion processing device may be further configured to: locate a location of a playlist inserted into the interstitial program, and delete a playlist of the interstitial program to delete the interstitial program.

The front-end program segmentation device may include: a first segment processing module and a second segment processing module, where:

The program insertion processing device may be further configured to: check according to a preset insertion time Looking up a playlist of a normal program, obtaining segmentation data of a normal program played when the insertion time is reached, to determine segmentation data of a normal program inserted by the playlist of the interstitial program.

The program insertion processing device may be further configured to: insert an interstitial identifier into a normal program segment of the playlist inserted into the interstitial program. The terminal program playing device, when the normal program is played according to the playlist of the normal program, if it is determined that the segment data of a normal program includes the interstitial identifier, the segment data of the normal program is obtained. A playlist of the inserted program.

The program insertion processing device may be further configured to: before inserting the playlist of the interstitial program, first determining a data length of the playlist of the interstitial program, if it is greater than a preset data length, performing the The compression process inserts the playlist of the compressed interim program and a compressed identification into the segmentation data of the normal program. If the terminal program playing device plays a normal program according to the playlist of the normal program, if it is determined that the segmentation data of a normal program includes the compressed identifier, the segmentation data of the normal program is obtained from the segmentation data of the normal program. After the playlist of the inserted program is described, it is also decompressed.

The front-end program segmentation device may be further configured to: generate a uniform resource locator URL of the playlist of the interstitial program. The program insertion processing device may be further configured to: insert the URL of the interstitial program as a playlist of the interstitial program into the segment data of the normal program. The terminal program playing device may be further configured to: when the URL is obtained in the segment data of a normal program, acquire a playlist of the interstitial program according to the URL.

In order to better illustrate the implementation of the present invention, a specific application example will be described below by implementing an advertisement program through a web CDN system.

This application example uses two moving picture expert group (MPEG, Moving Picture Export Group) -2 transport stream (TS, Transport Stream) files A and B as the program data source and advertising data source, respectively, these two MPEG-2 TS The stream includes a QVGA Quarter Video Graphic Array (QVGA) image stream encoded as H.264 and an AAC (Advanced Audio Coding) audio stream. The program data source is processed into a plurality of segmented programs, and the program file names are filenameA- 1.ts, filenameA-2.ts, filenameA-50.ts - a total of 50 files, and a program playlist is generated accordingly. It should be noted, The method of the invention is equally applicable to the case of multiple streams.

The method for implementing the interstitial advertisement by using the application example of the present invention is as shown in FIG. 6, and includes the steps:

Step S601: Acquire information related to decoding of the advertisement program;

The decoding related information is extracted from the advertisement data source MPEG-2 TS file filenameB.ts, and includes a TS package of a program related table (PAT, Program Association Table) and a program map table (PMT, Program Map Table).

Step S602: Divide the advertisement program into a plurality of small segment files;

The MPEG-2 TS file filenameB.ts is divided into a plurality of segment data of 20 seconds in length from the position of the key frame of the video image, and each segment data is an MPEG-2 TS file, and each segment is segmented. The decoding units of the data start with image key frames. At the same time, the TS packets of the respective decoding related information PAT and PMT are respectively inserted in front of the respective segment data to obtain a plurality of MPEG-2 TS small files, and the advertisement file names are filenameB-1.ts, filenameB-2.ts, filenameB, respectively. -lO.ts a total of 10 files.

Step S603: Generate a playlist of the advertisement program;

The playlist B of the advertisement program is generated in the Extensible Markup Language (XML) format. The playback duration, file name and other information of these MPEG-2 TS small files are described in order in the playlist.

Step S604: Construct a uniform resource location identifier URL-B of the advertisement playlist;

The data after segment B of the program is placed on the storage device of the HTTP WEB server, and a uniform resource location identifier URL-B is generated to identify the playlist of the B program.

Step S605: Insert the URL-B of the advertisement playlist into the program segment data;

In a specific implementation, the URL-B of the advertisement playlist may be encapsulated into a TS packet. According to the TS packet format specified by the protocol, a new packet identifier PID=0xlFFD may be extended in the MPEG-2 TS stream to indicate that the advertisement is encapsulated. The TS packet of the URL-B of the playlist is extended by a new table identifier table_id=0xFD to indicate that the resource location table (RLT, Resource Location Table) in the payload of the TS packet is encapsulated with an advertisement playlist. URL-B. The RLT satisfies the program specific information PSI syntax in the MPEG-2 TS stream. A schematic diagram of an MPEG-2 TS segmentation of a Uniform Resource Locator URL encapsulating an ad playlist is shown in FIG. When the advertisement needs to be inserted during the program playing, the B program is inserted, the advertisement insertion device inserts the advertisement B program after 10 minutes according to the demand, the advertisement insertion device retrieves the play list of the A program, and locates the A program that should be played after 10 minutes. The Fth segmentation data.

If the Uniform Resource Locator URL-B length of the playlist of the advertisement B program is not greater than 6096, the URL-B is directly put into the RLT, and the two-bit compression indication 00 indicates that the URL is uncompressed.

If the Uniform Resource Locator URL-B length of the playlist of the advertisement B is greater than 6096, the URL-B is compressed by the GZIP and put into the RLT, and the two-digit compression indication 01 indicates that the URL is compressed by GZIP.

Finally, the TS header is constructed, and the PID is 0xlFFD in the header, and the header and the RLT are combined into 188 bytes into a plurality of TS packets encapsulating the URL of the advertisement playlist, that is, the data carried in the multiple TS packets are common. The URL that carries the ad playlist. Finally, these TS packets are inserted after the F th segment data of the A program.

Step S606: playing a program, if the URL-B of the advertisement playlist is decoded from the program segment, the advertisement playlist is obtained, and then the advertisement is played according to the advertisement playlist;

According to the method, after the terminal program playing device plays the F segment data of the A program, the segmented data is found to have an advertisement uniform resource positioning URL in the process of 10 minutes. If the URL is compressed, it needs to be decompressed first, and then according to the method. The uniform resource location URL acquires the B program playlist, and then starts to acquire the B program segment data according to the B program playlist, and starts playing the B program segmentation data after the F segment data of the A program is played.

Step S607: After the advertisement is completed, the program continues to be played.

After the B program playlist is played, the A program playlist is followed by the A program. To further illustrate the implementation of the application example of the present invention, please refer to FIG. 8 , which illustrates a process diagram of an HTTP web server interacting with a client to implement an interstitial advertisement.

The invention may, of course, be embodied in various other forms and modifications without departing from the spirit and scope of the invention.

Industrial applicability The method and system for dynamically inserting a program in a segmented program according to an embodiment of the present invention can realize the insertion of a program even if the client is playing a program, and can truly realize the dynamic insertion of the program, which is very flexible, practical, and applicable. The web CDN system, therefore, the invention has strong industrial applicability.

Claims

Claim

When a normal program is played according to the playlist of the normal program, if the playlist of the interstitial program is acquired in the segment data of a certain normal program, the interlaced program is first played according to the playlist of the interstitial program, and the interstitial is completed. After the program is played, the normal program continues to be played according to the playlist of the normal program.

2. The method of claim 1 further comprising:

3. The method of claim 1 further comprising:

4. The method according to claim 1, wherein the step of segmenting the interleaved program comprises: dividing the interleaved program into one or more logical segment data or physical segmentation data according to logical or physical segmentation, each segment Segment data begins with random access units;

5. The method of claim 1 further comprising:

6. The method of claim 1 wherein: Inserting the playlist of the interstitial program into the segment data of the normal program includes: inserting an interstitial identifier into a normal program segment of the playlist inserted into the interstitial program;

Correspondingly, when the normal program is played according to the playlist of the normal program, the step of acquiring the playlist of the interstitial program in the segment data of a normal program includes: when playing the normal program according to the playlist of the normal program, If it is determined that the segmentation data of a normal program includes the insertion identifier, the playlist of the interstitial program is obtained from the segmentation data of the normal program.

7. The method of claim 1 wherein:

The step of inserting the playlist of the interstitial program into the segment data of the normal program includes: determining a data length of the playlist of the interstitial program, if it is greater than a preset data length, compressing the compressed data, compressing a playlist of the subsequent interstitial program and a compressed identification inserted into the segmentation data of the normal program;

8. The method of any of claims 1-7, wherein:

Inserting the playlist of the interstitial program into the segment data of the normal program includes: generating a uniform resource locator URL of the playlist of the interstitial program; inserting the playlist of the interstitial program into the normal form in the form of its URL In the segmentation data of the program;

The front-end program segmentation device is configured to: segment the intervening program to generate a play of the interstitial program List

10. The system according to claim 9, wherein: the program insertion processing device is further configured to: generate a playlist of a new interstitial program according to the new interstitial program, and locate a position of the playlist inserted into the interstitial program, The playlist of the interstitial program is updated to a playlist of the new interstitial program to update the interstitial program.

11. The system of claim 9, wherein: the program insertion processing device is further configured to: locate a location of a playlist inserted into the interstitial program, delete a playlist of the interstitial program, to delete an interstitial program.

The system of claim 9, wherein the front-end program segmentation device comprises: a first segment processing module and a second segment processing module, wherein:

13. The system according to claim 9, wherein: the program insertion processing device is further configured to: search for a playlist of a normal program according to a preset insertion time, and obtain a score of a normal program played when the insertion time is reached. Segment data to determine segmentation data of a normal program inserted by a playlist of the interstitial program.

14. The system of claim 9 wherein: The program insertion processing device is further configured to: insert a cut-in identifier in a normal program segment inserted into a playlist of the interstitial program;

15. The system of claim 9 wherein:

The program insertion processing device is further configured to: before inserting the playlist of the interstitial program, determining a data length of the playlist of the interstitial program, if it is greater than a preset data length, compressing the a playlist of the compressed interim program and a compressed identification inserted into the segmentation data of the normal program;

16. The system of any of claims 9-15, wherein:

The front-end program segmentation device is further configured to: generate a uniform resource locator URL of the playlist of the interstitial program;

The program insertion processing device is further configured to: insert a URL of the interstitial program as a playlist of the inserted program into segment data of a normal program;