KR20200002771A - Method and system for delayed live broadcast - Google Patents

Abstract

Disclosed are a delayed live broadcasting method capable of providing live broadcasting at a time point delayed from a start time point of the live broadcasting and a system thereof. According to one embodiment of the present invention, the delayed live broadcasting method comprises the steps of: managing live broadcasting start time and delayed live broadcasting start time with respect to broadcasting of a transmitter; accumulating file information for indicating a generated transmission segment file in first playback file information in the order of creation of the transmission segment file based on the live broadcasting start time with respect to the transmission segment file generated by encoding streaming data transmitted from a terminal of the transmitter; extracting the file information accumulated in the first playback file information in the order of creation of the transmission segment file based on the delayed live broadcasting start time to add the extracted file information to second playback file information; and providing a delayed live broadcasting service with respect to broadcasting of the transmitter by using the second playback file information, wherein the delayed live broadcasting start time is preset to a time after the live broadcasting start time.

Description

METHOD AND SYSTEM FOR DELAYED LIVE BROADCAST}

The following description relates to a method and a system for delayed live broadcast. More specifically, a delayed live broadcast method and a delayed live broadcast system capable of providing a delayed live broadcast service for viewing after a broadcaster has transmitted a broadcast live for a specified time, And a computer program stored in a computer readable recording medium for executing the delayed live relay method in combination with a computer and the recording medium.

Live broadcasting is to broadcast a live broadcast simultaneously, for example, Korean Patent Laid-Open No. 10-2014-0115661 discloses a method, a server, and a system for providing an interactive live broadcast service to a plurality of user terminals.

In addition, there are live broadcast services for relaying various broadcasters who want to broadcast broadcasts and various viewers who want to watch live broadcasts of broadcasters, such as a personal broadcast live broadcast service that allows anyone to broadcast a video.

However, in the live broadcast services of the prior art, only broadcasts are provided in real time, or after the broadcast is terminated, only VOD contents are generated using the streaming data of the broadcast. For example, viewers who watch the broadcast from the middle after the broadcast starts cannot but watch the middle part of the broadcast as it is, and can watch the broadcast from the beginning through the VOD content only after the broadcast is completed.

A delay live broadcast method and a delay live broadcast system capable of live broadcasting at a delayed time after the start of a live broadcast, and a computer program stored in a computer readable recording medium combined with a computer for executing the delay live broadcast method on a computer and the recording medium thereof. To provide.

Managing a live broadcast start time and a delay live broadcast start time for a broadcaster of the sender, wherein the delayed live broadcast start time is preset to a time after the live broadcast start time; The transmission segment file generated by encoding streaming data transmitted from the terminal of the sender based on the live relay start time, file information for indicating the generated transmission segment file according to the order in which the transmission segment file is generated. Accumulating on the first play file information; Extracting file information accumulated in the first play file information based on the delayed live relay start time and adding the second play file information to the second play file information in the order of generation of the transmission segment file; And providing a delayed live broadcast service for the broadcaster of the sender using the second play file information.

In combination with a computer there is provided a computer program stored on a computer readable recording medium for causing the computer to execute the delay live broadcast method.

Provided is a computer-readable recording medium, in which a program for causing the computer to execute the delayed live relay method is recorded.

A delayed live system, comprising: at least one processor implemented to execute computer readable instructions, wherein the at least one processor manages a live live start time and a delayed live start time for the broadcaster of the sender; The delayed live start time is preset to a time after the live start time-for the transport segment file generated by encoding streaming data transmitted from the terminal of the sender based on the live start time, the generated transport segment File information for indicating a file is accumulated in the first playback file information according to the order in which the transmission segment file is generated, and the file information accumulated in the first playback file information is based on the delayed live start time. Extract files in the order in which they were created Added to the second reproduction information file, and the second provides a delay live system, characterized in that using the second reproduction information file operation performed by providing a delay live broadcast service for the broadcast of said transmission.

A delay live broadcast method and a delay live broadcast system capable of live broadcasting at a delayed time after the start of a live broadcast, and a computer program stored in a computer readable recording medium combined with a computer for executing the delay live broadcast method on a computer and the recording medium thereof. Can be provided.

1 is a diagram illustrating an example for explaining a delay live broadcast according to an embodiment of the present invention.
2 is a flowchart illustrating an example of a delay live broadcast method according to an embodiment of the present invention.
3 is a diagram illustrating an example of first play file information and second play file information according to an embodiment of the present invention.
4 is a block diagram illustrating an example of a physical machine according to an embodiment of the present invention.
5 is a view showing an example of the overall configuration of an open live broadcast platform according to an embodiment of the present invention.
6 is a diagram illustrating an example of a configuration of a live streaming farm according to an embodiment of the present invention.
7 is a diagram illustrating an example of load balancing of an L4 switch according to an embodiment of the present invention.
8 is a diagram illustrating an example of a configuration of an encoder server pool according to an embodiment of the present invention.
9 is a diagram illustrating an example of a configuration of a VOD farm according to an embodiment of the present invention.
10 to 12 are diagrams showing an example of a method of operating an open live broadcast platform according to an embodiment of the present invention.

Hereinafter, exemplary embodiments will be described in detail with reference to the accompanying drawings.

1 is a diagram illustrating an example for explaining a delay live broadcast according to an embodiment of the present invention. In FIG. 1, the first arrow 110 indicates the live broadcast start time 'AM 10:00' for the broadcaster's broadcast, and the second arrow 120 indicates the live broadcast end time 'AM 11:00' for the broadcaster's broadcast, respectively. have. For example, when the live broadcast start time is 'AM 10:00', the sender's terminal may transmit streaming data for broadcasting. This live broadcast start time may correspond to the time at which streaming data is transmitted from the sender's terminal. Similarly, the live relay end time may correspond to the time at which the streaming data is transmitted from the sender's terminal.

In this case, the system for live broadcasting may receive the streaming data transmitted from the sender's terminal, generate the transmission segment files by encoding the received streaming data through the encoder, and provide the generated transmission segment files to the viewer's terminal. By doing so, the live broadcast can proceed.

Meanwhile, the third arrow 130 of FIG. 1 indicates the delayed live broadcast start time 'AM 10:30' for the broadcaster's broadcast, and the fourth arrow 140 indicates the delayed live broadcast end time 'AM 11:30' for the broadcaster's broadcast. 'Respectively. In this case, the delayed live broadcast start time may be preset to a time after the live broadcast start time, and preferably, a time between the live broadcast start time and the live broadcast end time. According to an embodiment, the delayed live broadcast start time may be set to a relative time such as 30 minutes after the live broadcast start time.

In this case, the viewers can watch the broadcast from the beginning even after a predetermined time when the broadcast is started through the delayed live broadcast, instead of watching the broadcast from the middle during the live broadcast.

2 is a flowchart illustrating an example of a delay live broadcast method according to an embodiment of the present invention. The delayed live relay method according to the present embodiment may be performed by the delayed live relay system according to the present embodiment. The delayed live system may be implemented as at least one physical machine, and corresponds to the steps (steps 201 to 211) included in the delayed live method of FIG. 2 by at least one processor included in the at least one physical machine. Operations may be performed.

In step 201, the delayed live broadcast system may manage a live broadcast start time and a delayed live broadcast start time for the broadcaster. Such live broadcast start time and delayed live broadcast start time have been described in detail with reference to FIG. 1. For a case where the delayed live broadcast start time is preset as a time between the live broadcast start time and the live broadcast end time, the delayed live broadcast system may further manage the live broadcast end time for the broadcaster in step 201.

In step 202, the delayed live system may determine whether live broadcasts have begun. As described above, the live broadcast start time may correspond to the time at which streaming data is transmitted from the sender's terminal. Therefore, the start of live broadcast may be confirmed through the live broadcast start time, but the streaming data for the broadcast from the sender is substantially. It may be confirmed by whether or not is sent out. Step 203 may be performed if live broadcast has been initiated, and if no live broadcast has been initiated the delayed live relay system may wait until the live broadcast has begun.

In step 203, the delayed live relay system may generate a transmission segment file by encoding streaming data transmitted from the sender's terminal based on the live relay start time. Encoding of the streaming data may be performed through an encoder. For example, when encoding streaming data using an HLS (HTTP Live Streaming) algorithm, files for a transport stream (TS) format may be generated as a transport segment file. In some embodiments, if the delayed live system does not include an encoder, the delayed live system may receive transport segment files generated by encoding through a separate encoder and step 203 may be omitted.

In step 204, the delayed live relay system may update the live file reproduction file information to include file information for indicating the N or less transmission segment files most recently generated. For example, suppose N is three. In this case, when the first transmission segment file is generated, the delayed live relay system may generate the live file for reproduction, and add the first file information of the first transmission segment file to the live file for reproduction. Thereafter, when the second transmission segment file is generated, the delayed live relay system may add second file information of the second transmission segment file to the live file reproduction file information. Thereafter, when the third transmission segment file is generated, the delayed live relay system may add third file information of the third transmission segment file to the live file reproduction file information. Subsequently, when the fourth transmission segment file is generated, the delayed live relay system must include three or less file information of the most recently generated reproduction file information for the live broadcast. The fourth file information can be added to the live file reproduction file information. If the fifth transmission segment file is generated, it will be readily understood that the delayed live relay system may add the fifth file information of the fifth transmission segment file to the live file reproduction file information except for the second file information.

In step 205, the delayed live relay system may provide a live broadcast service for a broadcaster using a live broadcast play file information. For example, the file information described above may include address information for accessing a corresponding transport segment file through a network. For example, when streaming data is encoded using an HTTP Live Streaming (HLS) algorithm, the live file reproduction information may be implemented as a file having an m3u8 extension.

The live-playback file information may include address information of the most recent N transmission segment files or less. Such live broadcast play file information may be provided to a viewer's terminal, and a player installed and driven in the viewer's terminal may transmit or receive the most recent N or less transmission segments through address information of file information included in the live broadcast play file information. The viewer's terminal may be controlled to download the files. At this time, the player can play the broadcaster's broadcast in real time by playing the downloaded transmission segment files.

As described above, as the transmission segment files are generated, the play file information for live broadcasting can be updated, and the player driven in the viewer's terminal receives the play file information continuously updated and compares it with the previously received play file information. In addition, it will be possible to identify transport segment files to be downloaded further.

These steps 204 and 205 may be omitted in the delayed live method according to an embodiment as operations for a live broadcast service.

In step 206, the delayed live relay system may accumulate file information for indicating the generated transmission segment file in the accumulated playback file information according to the order in which the transmission segment file is generated. Due to the nature of live broadcasting, a general live broadcasting service does not store file information of transmission segment files for a broadcast portion already provided to viewers. For example, even if the transport segment files are stored somewhere for the live broadcast service, no separate play file information for providing the order and address information of the transport segment files is generated. In this embodiment, in order to provide a delay live broadcast service and / or a time machine service for live broadcast, which will be described later, file information of transmission segment files for a broadcaster's broadcast may be accumulated and stored in cumulative playback file information.

In step 207, the delayed live system may check whether the delayed live broadcast is started. For example, the delayed live system may check whether the delayed live start time is reached. When the delayed live start time is reached, the delayed live system may perform step 208. On the other hand, even if the delayed live start time has not been reached, the live broadcast is still in progress, so if the delayed live broadcast is not started, the delayed live relay system may perform step 203 again.

In step 208, the delayed live system may extract the file information accumulated in the accumulated play file information according to the order in which the transmission segment file is generated and add the delayed live file to the delayed live file information. For example, the delayed live broadcast system may periodically extract the file information in the order accumulated in the accumulated play file information and add it to the delayed live play file information.

In step 209, the delayed live relay system may provide a delayed live broadcast service for the broadcaster using the delayed live broadcast play file information. For example, the delayed live broadcast system may transmit delayed live broadcast play file information to a terminal of a viewer requesting a delayed live broadcast service. The player installed and driven in the viewer's terminal can sequentially download the transmission segment files for delayed live broadcast from the start of the broadcaster through the file information included in the delayed live broadcast play file information. Since the file information of the transmission segment file is periodically added to the delayed live file information, the player also periodically receives the delayed live file information from the delayed live system and compares it with the previously received delayed live file information. This will allow you to identify the transport segment file to be (added). Therefore, the viewer can watch the broadcast from the beginning even after a certain time has elapsed from the start point of the broadcaster.

In step 210, the delayed live system may check whether the live broadcast is terminated. As described above, the live broadcast end time may correspond to the time at which the streaming data is transmitted from the sender's terminal. Therefore, the end of the live broadcast may be confirmed through the live broadcast end time. It may also be checked whether or not the transmission of the streaming data is terminated. If the live broadcast is terminated, step 211 may be performed. If the live broadcast is not terminated, the delayed live system may perform step 203 to continuously provide a live broadcast service and a delayed live broadcast service.

In step 211, the delayed live system may check whether the delayed live broadcast is terminated. Since the delayed live broadcast can be continued even when the live broadcast is terminated in step 210, the delayed live broadcast system may check whether the delayed live broadcast is terminated based on the delayed live broadcast end time. If the delayed live broadcast is not yet finished, the delayed live broadcast system may continuously provide a delayed live broadcast service by performing step 208. When the delay live broadcast is terminated, the delay live broadcast method may be terminated.

3 is a diagram illustrating examples of cumulative play file information and delayed live play file information according to an embodiment of the present invention. 3 illustrates an example of a process in which file information managed through cumulative playback file information 310 and delayed live playback file information 320 changes with time. For example, the file information "AAAstore_10_00_0.ts" may mean the first ('0') transmission segment file generated at '10' hour '00' minutes stored in 'AAAstore'. In this case, the file information "AAAstore_10_00_0.ts" itself may be a file name of a corresponding transport segment file. The address information of the corresponding transport segment file may be obtained by, for example, adding "/AAAstore_10_00_0.ts" to the end of the preset address.

In this case, assume that the delayed live start time is 10:30. The delayed live system may extract the file information of the first transmission segment file displayed through the first dotted line box 331 from the accumulated play file information 310 and add it to the delayed live play file information 320. The second dotted line box 332 shows a state in which the file information of the first transmission segment file is added to the delayed live play file information 320.

After the unit time (for example, three minutes) has elapsed, the third dotted line box 341 shows the file information of the transmission segment file generated at 10:33 accumulated in the accumulated playback file information 310. . In this case, the delayed live system may extract the file information of the second transmission segment file displayed through the fourth dotted box 342 from the accumulated play file information 310 and add it to the delayed live play file information 320. have. The fifth dotted line box 343 shows a state in which the file information of the second transmission segment file is added to the delayed live play file information 320.

After the unit time has elapsed again, the sixth dotted line box 351 shows the file information of the transmission segment file generated at 10:36 accumulated in the accumulated play file information 310. In this case, the delayed live system may extract the file information of the third transmission segment file displayed through the seventh dotted line box 352 from the accumulated play file information 310 and add it to the delayed live play file information 320. have. The eighth dotted line box 353 shows that the file information of the third transmission segment file has been added to the delayed live play file information 320.

According to an embodiment, the unit time may correspond to a reproduction time of one transport segment file. Also, similarly to the live file reproduction file information including file information for indicating the N or less transmission segment files most recently generated, the delayed file reproduction file information 320 may be the most recent. The file information may be updated to maintain file information of M added or less (where M is a natural number). For example, if M is 3, the file information of the transmission segment file generated at 10:39 is added to the delayed live file information 320 and the file information of the first transmission segment file (second dotted line box ( 332) may be removed from the delayed live file play file information 320. In the case of providing the delayed live play file information 320 accumulated with the file information, there is an advantage in that it can provide a time machine function, and the delayed live play file information 320 is updated to maintain M or less file information. In the case of providing, the capacity of the delayed live play file information 320 and the cost required for comparing the file information can be reduced.

The viewer sequentially downloads and plays the transmission segment files for delayed live broadcast through the delayed live file information, thereby providing a delayed live broadcast service from the beginning with the broadcaster delayed for a predetermined time (30 minutes in this embodiment). I can receive it.

4 is a block diagram illustrating an example of a physical machine according to an embodiment of the present invention. The physical machine according to the present embodiment may be implemented by the computer device 400 shown in FIG. 4, and the delay live broadcast method according to the embodiment may be performed by the computer device 400. For example, a computer program according to an embodiment may be installed and run on the computer device 400, and the computer device 400 may perform a delayed live relay method under the control of the driven computer program.

As illustrated in FIG. 4, the computer device 400 may include a memory 410, a processor 420, a communication interface 430, and an input / output interface 440. The memory 410 is a computer-readable recording medium. The memory 410 may include a permanent mass storage device such as random access memory (RAM), read only memory (ROM), and a disk drive. In this case, the non-volatile mass storage device such as a ROM and a disk drive may be included in the computer device 400 as a separate permanent storage device separate from the memory 410. In addition, the memory 410 may store an operating system and at least one program code. These software components may be loaded into the memory 410 from a computer-readable recording medium separate from the memory 410. Such a separate computer-readable recording medium may include a computer-readable recording medium such as a floppy drive, disk, tape, DVD / CD-ROM drive, memory card, and the like. In other embodiments, the software components may be loaded into the memory 410 via the communication interface 430 rather than the computer readable recording medium. For example, software components may be loaded into memory 410 of computer device 400 based on a computer program installed by files received via network 460.

The processor 420 may be configured to process instructions of a computer program by performing basic arithmetic, logic, and input / output operations. The instructions may be provided to the processor 420 by the memory 410 or the communication interface 430. For example, the processor 420 may be configured to execute a command received according to a program code stored in a recording device such as the memory 410.

The communication interface 430 may provide a function for the computer device 400 to communicate with other devices (eg, storage devices described above) via the network 460. For example, a request, a command, data, a file, etc. generated by the processor 420 of the computer device 400 according to a program code stored in a recording device such as the memory 410 may be controlled according to the control of the communication interface 430. 460 may be passed to other devices. Conversely, signals, commands, data, files, and the like from other devices may be received by the computer device 400 via the network 460 via the communication interface 430 of the computer device 400. Signals, commands, data, and the like received through the communication interface 430 may be transmitted to the processor 420 or the memory 410, and the files and the like may be further included in the storage medium that the computer device 400 may further include. Persistent storage).

The input / output interface 440 may be a means for interfacing with the input / output device 450. For example, the input device may include a device such as a microphone, a keyboard or a mouse, and the output device may include a device such as a display or a speaker. As another example, the input / output interface 440 may be a means for interfacing with a device in which functions for input and output are integrated into one, such as a touch screen. The input / output device 450 may be configured with the computer device 400 and one device.

Further, in other embodiments, computer device 400 may include fewer or more components than the components of FIG. 4. However, it is not necessary to clearly show most of the prior art components. For example, the computer device 400 may be implemented to include at least some of the input / output devices 450 described above, or may further include other components such as a transceiver, a database, and the like.

In some embodiments, the delay live broadcast method may be performed through a combination of a plurality of computer devices. Hereinafter, the structure of an open live broadcast platform that can be implemented as an example of a delay live broadcast system performing a delay live broadcast method will be described.

5 is a view showing an example of the overall configuration of an open live broadcast platform according to an embodiment of the present invention, Figure 6 is a view showing an example of the configuration of a live streaming farm according to an embodiment of the present invention, 7 is a diagram illustrating an example of load balancing of an L4 switch according to an embodiment of the present invention, and FIG. 8 is a diagram illustrating an example of a configuration of an encoder server pool according to an embodiment of the present invention. 9 is a diagram illustrating an example of a configuration of a VOD farm according to an embodiment of the present invention.

As shown in FIG. 5, the open live broadcast platform 500 according to the present embodiment includes a live streaming farm 510, a coordinator 520, and a video on demand farm 530. can do.

The live streaming farm 510 may process streaming data transmitted from the sender 540 and relay the stream data to the viewer 550. To this end, as shown in FIG. 6, the live streaming farm 510 includes a first L4 switch 610, a publishing point server pool 620, an encoder server pool 630, The server may include a distributed file system 640, a proxy server pool 650, and a second L4 switch 660. In FIG. 5, one sender 540 and one viewer 550 are illustrated, but the sender 540 and the viewer 550 may mean a plurality of senders and a plurality of viewers. May mean a terminal of a sender for transmitting a broadcast and a terminal of a viewer receiving a broadcast.

As illustrated in FIG. 7, the first L4 switch 610 may be used for load balancing of a plurality of publishing point servers 710 included in the publishing point server pool 620. For example, the first L4 switch 610 may determine which publishing point server of the plurality of publishing point servers 710 delivers streaming data transmitted from the sender 540.

As described with reference to FIG. 7, the publishing point server pool 620 is a pool of the plurality of publishing point servers 710, and each publishing point server is transmitted through the first L4 switch 610. The transmission request of the 140 may be processed, and streaming data may be delivered to an encoder server included in the encoder server pool 630. At this time, one publishing point server may process a plurality of transmission requests. In addition, one publishing point server may be implemented as one physical machine, but a plurality of publishing point servers may be implemented on one physical machine. For example, when the three physical machines are implemented to include three publishing point servers, a total of nine publishing point servers may be included in the publishing point server pool 620. Although FIG. 3 shows an example in which the publishing point server pool 620 includes three publishing point servers, the publishing point server may be freely added to the publishing point server pool 620 or the publishing point server pool 620 as needed. May be excluded.

The encoder server pool 630 may be a pool including a plurality of encoder servers 810 as shown in FIG. 8. Although the plurality of encoder servers 810 shows an example including three encoder servers as shown in FIG. 8, the encoder server may be freely added to the encoder server pool 630 or the encoder server pool 630 as necessary. ) May be excluded. In addition, each of the plurality of encoder servers 810 may be implemented as one physical machine as described above, but may be implemented to include a plurality of encoder servers on one physical machine. For example, if the three physical machines are implemented to include four encoder servers each, a total of 12 encoder servers may be included in the encoder server pool 620.

In addition, one physical machine may be implemented to include at least one publishing point server and at least one encoder server. In other words, the publishing point server, the encoder server, and the proxy server to be described later may be implemented in the form of individual physical machines, or may be implemented in the form of a plurality of servers included on one physical machine. .

Each of the plurality of encoder servers 810 may be implemented as a pair of one encoder server and one uploader. For example, FIG. 8 illustrates an example in which one encoder server is implemented as a pair of encoder server 1 811 and uploader 1 812.

The encoder server may encode streaming data received from the publishing point server into a preset profile. For example, when providing a live broadcast to the viewer 550 using an HTTP Live Streaming (HLS) algorithm, the encoder server may generate a TS file by encoding streaming data received from the publishing point server. have.

The uploader uploads TS files generated as a result of encoding to the distributed file system 640 included in the live streaming farm 510 and the distributed file system 1020 included in the VOD farm 530 illustrated in FIG. 9. can do. In addition, the uploader stores playback file information (for example, information on what media and how to play them) according to each service type as TS files generated, and m3u8 files in the HLS (HTTP Live Streaming) algorithm. It may be generated and uploaded to the distributed file system 640 included in the live streaming farm 510. At this time, the playback file information according to the service type includes playback file information (eg, m3u8 file for time machine) for providing a time machine function, playback file information (eg, m3u8 file for live broadcast) for live broadcasting, and / or VOD broadcasting. May include playback file information (for example, m3u8 file for VOD).

In this case, the playback file information for providing the time machine function may correspond to the accumulated playback file information for providing the delay live broadcast service. As described above, the delayed live broadcast play file information may be generated and updated by extracting file information from the accumulated play file information after the start of delayed live broadcast.

The distributed file system 640 may store and provide encoded files (eg, TS files) and playback file information (eg, m3u8 files) for streaming to the viewer 550.

The proxy server pool 650 may include a plurality of proxy servers, and the proxy server selected through the second L4 switch 660 receives an external streaming request and delivers it to the distributed file system 640. can do. In this case, the distributed file system 640 advances the stored files (encoded files (e.g., TS files) and playback file information (e.g., m3u8 files)) according to the external streaming request delivered. By providing through the selected proxy server, a live broadcast service can be provided to the viewer 550. The play file information for the delayed live broadcast may also be provided to viewers requesting the delayed live broadcast service in a similar manner.

The coordinator 520 may manage the state of the servers included in the open live platform 500, allocate an encoder server, and manage the overall state and settings of the open live platform 500, such as information on a channel currently being transmitted. . For example, the servers included in the open live platform 500 may undergo a process of registering themselves with the coordinator 520 when executed, and the coordinator 520 may manage registered servers. In addition, the coordinator 520 may allocate the encoder server according to the request of the publishing point server. The coordinator 520 may be implemented using, for example, a Zookeeper system, which is a framework that provides auxiliary functions such as information sharing, locks, and events among nodes in a distributed environment.

The VOD farm 530 may be responsible for generating and storing a VOD file of a live broadcast image and providing a VOD service. As shown in FIG. 9, the VOD farm 530, the distributed file system 920, It may include a proxy server pool 930 and a third L4 switch 940.

When the VOD generation pool 910 receives a VOD file generation request, the VOD generation pool 910 may download encoded files (eg, TS files) from the distributed file system 920 and generate a VOD file (eg, an MP4 file). have. In addition, the VOD generation pool 910 may upload the generated VOD file to the distributed file system 920 again. The VOD generation pool 910 may include a plurality of VOD generation servers.

The distributed file system 920 may store and provide encoded files for the VOD file and a VOD file generated by the VOD generation pool 910.

The proxy server pool 930 may include a plurality of proxy servers. When an external VOD file request is received, the third L4 switch 940 may select one proxy server among a plurality of proxy servers included in the proxy server pool 930 and transmit the external VOD file request. The proxy server may forward an external VOD file request to the distributed file system 920. In this case, the distributed file system 920 may provide the requested VOD file to the outside through a proxy server.

10 to 12 are diagrams showing an example of a method of operating an open live broadcast platform according to an embodiment of the present invention.

FIG. 10 illustrates steps 1-1 to 1-6 of the entire processes (steps 1-1 to 1-10) for live streaming.

Process 1-1 may be an example of a process in which the sender 540 transmits streaming data to the first L4 switch 610.

The process (1-2) is performed by the first L4 switch 610 to select any publishing point server 1010 included in the publishing point server pool 620, and forwards the transmission request to the selected publishing point server 1010. It may be an example of a process.

The process 1-3 may be an example of a process in which the publishing point server 1010 requests the coordinator 520 to allocate any one of the encoder servers included in the encoder server pool 630 for streaming.

Steps 1-4 include that the coordinator 520 selects any encoder server 1020 to be used for streaming in the encoder server pool 630, and the information about the publishing point server 1010 with the streaming start event is selected. This may be an example of a process of transferring to the server 1020.

Process (1-5) may be an example of a process in which the encoder server 1020 selected by the coordinator 520 accesses the publishing point server 1010 to receive streaming data and encode the received streaming data into a preset profile. have.

Processes 1-6 may be performed by the encoder server 1020 storing encoded data (eg, TS files generated according to encoding) in a designated path (eg, temporary storage 1030 of FIG. 10). It may be an example.

FIG. 11 illustrates steps 1-7 to 1-10 of the entire processes (steps 1-1 to 1-10) for live streaming. Processes 1-6 and 1-7 may be connected via (A) shown in FIGS. 10 and 11.

In steps 1-7, the uploader 1110 obtains encoded data (TS files) from the temporary storage 1030 shown in FIG. 10, and reproduces file information (for example, m3u8) corresponding to the encoded data. Files). For example, the above-described live broadcast play file information, cumulative play file information, and delayed live play file information may be generated. As described above, the uploader 1110 may be paired with the encoder server 1020.

Processes 1-8 upload the uploader 1110 the encoded data to the distributed file system 640 of the live streaming farm 510 and the distributed file system 920 of the VOD farm 530, respectively. The playback file information may be an example of a process of uploading the distributed file system 640 of the live streaming farm 510. The uploading process may be a process of updating / accumulating transmission segment files in live broadcast play file information, cumulative play file information, and delayed live play file information according to respective situations. In this case, uploading the encoded data to the distributed file system 920 of the VOD farm 530 may be connected through (C) illustrated in FIGS. 11 and 12.

Steps 1-9 include data encoded and reproduced from the distributed file system 640 of the live streaming farm 510 by the proxy server 1120, which is one of the proxy servers included in the proxy server pool 650. This may be an example of a process of requesting and receiving.

Process 1-10 may be an example of a process of performing live streaming by delivering the encoded data and the playback file information transmitted from the proxy server 1120 to the viewer 550. At this time, the viewer 550 receiving the live file playback information can watch the broadcast of the sender 540 by live broadcast, the viewer 550 receiving the delayed live file playback file information can be viewed by the delayed live broadcast It becomes possible.

12 illustrates the entire processes (processes 2-1 to 2-5) for generating a VOD file and providing a VOD service. 12 may be connected to FIGS. 10 and 11 through (B) and (C).

Process 2-1 may be an example of a process in which the VOD generation server 1210, which is one of the VOD generation servers included in the VOD generation pool 910, receives a VOD generation request from the coordinator 520.

Process 2-2 may be an example of a process in which the VOD generation server 1210 downloads encoded data to generate a VOD file from the distributed file system 920 included in the VOD farm 530. The encoded data may be data stored in the distributed file system 920 by the uploader 1110 through steps 1-8 of FIG. 11.

Process 2-3 may be an example of a process of generating a VOD file using the downloaded data by the VOD generation server 1210 and uploading it to the distributed file system 920.

In operation 2-4, the proxy server 1220, which is one of the proxy servers included in the proxy server pool 930, downloads the VOD file from the distributed file system 920 according to a request of the VOD requester 1230. It may be an example of.

Process 2-5 may be an example of a process in which the proxy server 1220 provides the downloaded VOD file to the VOD requester 1230.

Through these processes 2-1 to 2-5, a VOD file for live streamed broadcast may be generated and provided.

The open live platform 500 described with reference to FIGS. 5 to 12 is just one example for implementing a delayed live broadcast system according to an embodiment of the present invention, and the implementation of the delayed live broadcast system is an example of the open live platform 500. It is not limited to the form.

As described above, according to embodiments of the present invention, a delay live broadcast method and a delay live broadcast system capable of relaying a live broadcast at a delayed time after a start point and a computer readable computer for executing the delay live broadcast method in combination with a computer may be used. A computer program stored on a recording medium and the recording medium can be provided.

The system or apparatus described above may be implemented as a hardware component or a combination of hardware components and software components. For example, the devices and components described in the embodiments are, for example, processors, controllers, arithmetic logic units (ALUs), digital signal processors, microcomputers, field programmable gate arrays (FPGAs). Can be implemented using one or more general purpose or special purpose computers, such as a programmable logic unit (PLU), a microprocessor, or any other device capable of executing and responding to instructions. The processing device may execute an operating system (OS) and one or more software applications running on the operating system. The processing device may also access, store, manipulate, process, and generate data in response to the execution of the software. For convenience of explanation, one processing device may be described as being used, but one of ordinary skill in the art will appreciate that the processing device includes a plurality of processing elements and / or a plurality of types of processing elements. It can be seen that it may include. For example, the processing device may include a plurality of processors or one processor and one controller. In addition, other processing configurations are possible, such as parallel processors.

The software may include a computer program, code, instructions, or a combination of one or more of the above, and configure the processing device to operate as desired, or process it independently or collectively. You can command the device. Software and / or data may be any type of machine, component, physical device, virtual equipment, computer storage medium or device in order to be interpreted by or to provide instructions or data to the processing device. It can be embodied in. The software may be distributed over networked computer systems so that they may be stored or executed in a distributed manner. Software and data may be stored on one or more computer readable media.

The method according to the embodiment may be embodied in the form of program instructions that can be executed by various computer means and recorded in a computer readable medium. The computer readable medium may include program instructions, data files, data structures, etc. alone or in combination. The medium may be to continue to store a computer executable program, or to temporarily store for execution or download. In addition, the medium may be a variety of recording means or storage means in the form of a single or several hardware combined, not limited to a medium directly connected to any computer system, it may be distributed on the network. Examples of the medium include magnetic media such as hard disks, floppy disks and magnetic tape, optical recording media such as CD-ROMs and DVDs, magneto-optical media such as floptical disks, And ROM, RAM, flash memory, and the like, configured to store program instructions. In addition, examples of another medium may include a recording medium or a storage medium managed by an app store that distributes an application, a site that supplies or distributes various software, a server, or the like. Examples of program instructions include not only machine code generated by a compiler, but also high-level language code that can be executed by a computer using an interpreter or the like.

Although the embodiments have been described by the limited embodiments and the drawings as described above, various modifications and variations are possible to those skilled in the art from the above description. For example, the described techniques may be performed in a different order than the described method, and / or components of the described systems, structures, devices, circuits, etc. may be combined or combined in a different form than the described method, or other components. Or even if replaced or substituted by equivalents, an appropriate result can be achieved.

Therefore, other implementations, other embodiments, and equivalents to the claims are within the scope of the following claims.

Claims (11)

Managing a live broadcast start time and a delay live broadcast start time for a broadcaster of the sender, wherein the delayed live broadcast start time is preset to a time after the live broadcast start time;
The transmission segment file generated by encoding streaming data transmitted from the terminal of the sender based on the live relay start time, file information for indicating the generated transmission segment file according to the order in which the transmission segment file is generated. Accumulating on the first play file information;
Extracting file information accumulated in the first play file information based on the delayed live broadcast start time and adding the second play file information to the second play file information in the order of generation of the transmission segment file; And
Providing a delayed live broadcast service for the broadcaster of the sender using the second play file information;
Including,
And the second play file information includes file information for indicating a first transmission segment file for the broadcaster of the sender at the start time of the live broadcast. The method of claim 1,
Updating third playback file information to include file information for indicating up to N transmission segments files most recently generated (where N is a natural number); And
Providing a live broadcast service for the broadcaster of the sender using the third play file information;
Delay live relay method further comprises. The method of claim 1,
The managing step,
Further managing a live broadcast end time for the broadcaster of the sender;
And the delayed live relay start time is preset to a time between the live relay start time and the live relay end time. The method of claim 1,
And the second playback file information is updated to maintain file information of M or more recently added (where M is a natural number). The method of claim 1,
The file information includes address information for accessing a corresponding transmission segment file through a network.
Providing the delayed live service,
Providing the second play file information to a viewer's terminal, and transmitting the transmission segment file requested through the address information of the file information included in the second play file information to the viewer's terminal. Way. A computer program stored in a computer readable recording medium in combination with a computer for causing the computer to execute the method of any one of claims 1 to 5. A computer-readable recording medium in which a program for causing a computer to execute the method of any one of claims 1 to 5 is recorded. In the delay live broadcast system,
At least one processor implemented to execute computer-readable instructions
Including,
By the at least one processor,
Manage a live broadcast start time and a delay live broadcast start time for a broadcaster of the sender, wherein the delayed live broadcast start time is preset to a time after the live broadcast start time;
The transmission segment file generated by encoding streaming data transmitted from the terminal of the sender based on the live broadcast start time, file information for indicating the generated transmission segment file according to the order in which the transmission segment file is generated. Accumulate in the first play file information,
Based on the delayed live broadcast start time, the file information accumulated in the first play file information is extracted according to the order in which the transmission segment file is generated, and added to the second play file information;
Providing a delayed live broadcast service for the broadcaster of the sender using the second play file information.
Actions are performed,
And the second play file information comprises file information for indicating a first transmission segment file for the broadcaster of the sender at the start time of the live broadcast. The method of claim 8,
By the at least one processor,
Update the third playback file information to include file information for indicating the transmission segment files of N or less (N is a natural number) most recently generated;
Providing a live broadcast service for the broadcaster of the sender using the third playback file information
Delay live broadcast system, characterized in that further operations are performed. The method of claim 8,
By the at least one processor,
The live broadcast end time for the broadcaster of the sender is further managed,
The delayed live relay start time is a delay live relay system, characterized in that the predetermined time between the live relay start time and the live relay end time. The method of claim 8,
The file information includes address information for accessing a corresponding transmission segment file through a network.
By the at least one processor,
Providing the second playback file information to a viewer's terminal;
Transmitting a transmission segment file requested through the address information of file information included in the second play file information to the viewer's terminal;
Delay live broadcast system, characterized in that operations are performed to provide the delay live broadcast service.

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