JP2002247555A - Video common viewing system, common viewing video distribution method, program recording medium for common viewing video distribution and program for common viewing video distribution - Google Patents

Abstract

PROBLEM TO BE SOLVED: To appropriately set waiting time for an introducing action from a certain introducer to many viewers and to return value for the waiting time of the viewers further in a system in which video images can be introduced to each other among the viewers. SOLUTION: A common viewing server 1 stores introduction results in the past for each introducer (the number of introducing destinations, the number of the viewing requests of the people to be introduced and response time after introduction until the reception of the viewing request, etc.) When there is the next introduction from a certain introducer, the number of the viewing requests of this time is predicted on the basis of the history of the results in the past of the introducer and the waiting time (deadline time) of the viewing request is decided from the history of the response time corresponding to the predicted number. Further, on the basis of value setting data set corresponding to the viewing predicted number, the value of video viewing is decided.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a video co-viewing system for efficiently broadcasting the same video to a plurality of terminals in video-on-demand (VOD) video viewing. In response to simultaneous viewing requests from multiple referees triggered by the referral act, a wait time is set before the start of video distribution, and an appropriate wait time is set based on the introducer's past performance. The present invention relates to a video co-viewing system capable of returning time to a viewer.

[0002]

2. Description of the Related Art Video-on-demand is a system for distributing an image desired by a viewer (for example, see Japanese Patent Application Laid-Open No. Hei 4-5-5).
05081). In this method, a server receives a video requested by a viewer and transmits the video to the viewer. Since transmission and reception are performed on a one-to-one basis between the server and the viewer, resources between them are occupied. Therefore, when there is a request from a large number of viewers, it is necessary to secure the same number of transmission capacities.

[0003] When a certain image is introduced in a broadcast manner by an image introduction service or the like, a situation occurs in which a viewer who has watched the broadcast requests all at once. When such a situation occurs, the video cannot be distributed due to insufficient transmission capacity, and as a result, the viewer cannot view the video.

[0004] In this case, since the video requested by the viewer is the same, if the server distributes the request from the server in a one-to-many form by multicast, the resources can be shared, and the transmission capacity can be increased. Can be suppressed to the minimum necessary, and distribution can be performed even if the number of requested viewers is large.

[0005] In CATV, when all the video reproducing apparatuses on the server side are used and there is a request to view a video that is already being distributed, the video is distributed to the requesting source even in the middle of the video. (Japanese Patent Laid-Open No. 8-331545). In this way, when a request for viewing is simultaneously made for a video introduced by a video introduction service or the like, the requested video is distributed by sharing resources for video distribution. can do.

However, if video distribution has already begun,
Thereafter, the requesting viewer receives a video from the middle. Some videos, such as inference programs, have a half-interesting interest when viewed from the middle, and some, such as quiz programs, have an unclear answer. There are also things.
On the other hand, Japanese Patent Application Laid-Open No. 8-331545 also describes that re-distribution is performed from the beginning when a resource becomes available. However, an intermediate video is viewed until the resource becomes available.

[0007] In Japanese Patent Application Laid-Open No. 6-291764, a deadline is set for a request from each terminal, and when that time is reached, distribution to the terminal that has received the request is started. It is possible to see.

[0008]

As described above, as described above,
Efficient distribution can be achieved if a deadline is set for viewing requests from a large number of referrals that are triggered by referrals from a referrer, and broadcast only to accepted referrals. At the same time, the referee can watch the video from the beginning.

[0009] However, from the point of view of the referee, if a viewing request is made for the introduced video, he / she wants to view it as soon as possible.

Therefore, an object of the present invention is to efficiently distribute many viewing requests triggered by introduction from a certain introducer from the beginning of a video, and to wait for the distribution to start. It is an object of the present invention to provide a video co-viewing system that can appropriately set the value of the past introduction results and return the value of waiting time to the viewer.

[0011]

[Means for Solving the Problems] When a plurality of referees watch at the same time in response to an introduction from a certain introducer, they can view them jointly by broadcasting them. , There is a waiting time for the viewer to start broadcasting. An object of the present invention is to provide a video co-viewing system and a video co-viewing system capable of setting an appropriate waiting time based on past introduction results and returning a reward for the waiting time to a viewer.

Therefore, in the present invention, in order to appropriately set a waiting time until the start of distribution in response to a viewing request for the same video, history information storage means for storing past introduction results for each introducer, The system includes a predicted viewing number calculating unit for predicting the current viewing request number based on the history, and a deadline time determining unit for determining a viewing request deadline time (distribution start time) based on the predicted viewing number. It also has a price determination means for calculating the price for the waiting time of the viewer.

The operation of the present invention is as follows. When an introduction event from a certain introducer occurs, the server of the video co-viewing system identifies the introducer, and extracts the ratio of the reception of the viewing request to the number of introduced persons (response rate) as past introduction results. For the first time, an initial value set within 100% is used. By multiplying the number of the referral destinations by the ratio, the number of predicted viewings expected to respond is calculated. Compensation is calculated for the predicted number of viewings based on a compensation table set in advance. Further, from the number of past viewers (the number of viewing requests) closest to the current number of predicted viewings, the last accepted time at that time is obtained, and the time added to the time when the introduction information is transmitted is calculated as the deadline time.

[0014] The server includes an introducer, introduction contents, a deadline time,
The referral information, including the price, will be distributed to the referees all at once. The referee determines whether to make a viewing request based on the content of the introduction, the deadline time, ie, the distribution start time of the video, and the price. The server accepts the viewing request from the referee until the deadline time comes, and accumulates the reception time and the response rate as a history. When the deadline comes, the reception ends and distribution to the received referee starts.

If the viewer watches only the first time or only halfway, there is a possibility that the viewer will not watch it in the next introduction. Therefore, the server knows how far the viewer has watched the video and does not add it to the response rate. Recalculate as follows.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Prior to describing a specific embodiment of the present invention, the principle of a method of calculating a predicted number of viewing and a deadline time according to the present invention will be described with reference to FIG.

For example, when a recommended scene specified by a certain viewer (introducer) is transmitted to a referee, if the referee sees and likes the scene, a viewing request is made, and the main video is acquired by streaming for a fee. Consider a video introduction system like this. In such a system, when the number of introduction destinations increases, the load on the network increases. However, the load on the network can be reduced by streaming distribution using multicast or other broadcast means.

In the case of using such a broadcasting means, in order for all viewers to view the video from the beginning, it is necessary to notify the distribution start time in advance. However, if an attempt is made to distribute to as many viewers as possible in order to increase the distribution efficiency, the start time is delayed, and the waiting time of the viewer is accordingly increased. Therefore, this waiting time is appropriately determined based on the history of past introduction results.

Therefore, first, as shown in FIG.
Calculate the predicted number of views for a certain introduction. The number of viewing requests for a certain introduction is interrelated with the number of introduction destinations (referred persons) and the introducer, and it is considered that there is a similar relationship in the next introduction. Thus, such past introduction results are accumulated, and the number of predicted viewings is calculated based on the past introduction results.

As shown in FIG. 1B, the number of actual viewing requests and the time from the introduction to the reception of the viewing request (response time) are very closely related. Therefore, after calculating the number of predicted viewings for a certain introduction, the cutoff time (viewing start time) of the viewing request is calculated from the past response time history based on the number of predicted viewings. by this,
It is possible to appropriately set the waiting time of the viewer.

According to this method, the longer the predicted number of views is, the longer the waiting time from when the viewer who made the viewing request makes the viewing request until when the viewer starts viewing is relatively long. Therefore, if the price of the viewing is discounted according to the predicted number of viewings, the dissatisfaction with the waiting time of the viewer can be resolved, so that it is possible to activate the video distribution and the like.

Hereinafter, embodiments of the present invention will be described with reference to specific examples. 2 and 3 show the configuration of a video co-viewing system according to an embodiment of the present invention. FIG. 2 is a configuration diagram of the joint viewing server 1, and FIG. 3 is a configuration diagram of the viewer terminal 2.

The joint viewing server 1, as shown in FIG.
A data transmitting / receiving means 10 for transmitting / receiving data to / from the introducer terminal 3 and the plurality of viewer terminals 2, an introducer specifying means 11 for specifying an introducer, an introducer database 12 storing data on the introducer, A predicted viewing number calculating means 13 for calculating the number of viewing requests (predicted viewing number) predicted from the past performance of the introducer, a response rate history storage unit 14 for storing response rate history data, Setting data storage unit 1 for storing price setting data set in advance
5, a price determining means 16 for determining a price corresponding to the predicted number of views, a response time history storage unit 17 for storing response time history data, and a deadline time for determining a start time of video distribution by the broadcast means A decision means 18; an introduction information creating means 19 for creating introduction information including an introduction content, an introducer, consideration information, and a deadline time; and when the scheduled transmission time comes, the introduction information is transmitted to the introduction destination via the data transmission / reception means 10. Introductory information distribution means 20 for simultaneously transmitting to viewer terminal 2, viewing request receiving means 22 for receiving a viewing request from viewer terminal 2 until the deadline time, and a viewer who registers the received viewing request as a distribution destination Registration means 23, history information storage means 24 for storing the history of viewing requests, standby instruction transmitting means 25 for notifying reception completion and standby until the distribution start time, and one-to-many Video broadcast distribution means 26 for periodically distributing the video, deadline time management means 21 for instructing the video broadcast distribution means 26 to distribute the video to the viewer terminal 2 when the deadline time comes, There is provided a viewing status grasping means 27 for grasping the viewing status and subtracting the number of viewers who have not watched until the end from the response rate.

As shown in FIG. 3, the viewer terminal 2 includes a data transmitting / receiving means 30 for transmitting / receiving data to / from the joint viewing server 1 via the network 4, an introduction information acquiring means 31 for receiving introduction information, Introductory information display means 32 for displaying the introduction contents, introducer, consideration information, and deadline time on a television screen and presenting to the viewer, viewing request determining means 33 for detecting the viewer's viewing request, Is confirmed, the viewing request sending means 34 for sending the viewing request including the viewer ID for specifying the viewer terminal 2 to the joint viewing server 1 and the standby instruction information are received, and the system waits until the distribution start time. A standby unit 35, a standby information display unit 36 for displaying the contents of the standby instruction information, a video receiving unit 37 for receiving a video requested to be viewed, a reproducing unit 38 for reproducing the received video, And a reproduction status sending means 39 for notifying the co-viewing server 1 when finished.

The introducer terminal 3 has means (not shown) for creating data for video introduction and transmitting it to the joint viewing server 1 in accordance with an instruction of the introducer. The introducer terminal 3 is one of a large number of viewer terminals 2, and the introducer terminal 3 and the viewer terminal 2 are usually constituted by the same device possessed by the viewer.

FIG. 4 shows an example of data sent from the introducer terminal 3 to the joint viewing server 1. The content that you want to introduce, such as the video that the introducer saw, and the introducer I that identifies the introducer
D, an introduction destination including a plurality of introduced persons is transmitted from the introducer terminal 3 to the data transmitting / receiving means 10 through the network 4 and acquired by the introducer specifying means 11.

The introducer specifying means 11 refers to management data such as the introducer database 12 and specifies the introducer. FIG. 5 shows an example of the introducer database 12. As shown in FIG. 5, the introducer database 12 holds data such as an introducer ID for identifying the introducer, the date and time of the last introduction, and the name of the introducer.

The predicted viewing number calculating means 13 calculates the current predicted viewing number based on the response rate history which is the history information when the introducer introduced in the past. For example, in the past 10
If 0 people are introduced and 80 of them respond to the viewing request, the response rate will be 80%. This time, if it is going to be introduced to 150 people, 80% of 120 people are expected to request viewing. In this example, the predicted number of viewing is 120. If there is no history of the introducer, that is, in the case of the first introduction, the initial value of the response rate preset by the server operator or the like is used.

FIG. 6 shows an example of the response rate history stored in the response rate history storage unit 14. In the response rate history storage unit 14,
For example, as shown in FIG. 6, information such as an introducer ID, an introduction date and time, a content ID, and the like, the number of introduction destinations, the number of viewing requests that have received a viewing request response to the introduction, and the response rate are history information. Is stored as The predicted viewing number calculation means 13 calculates the predicted viewing number using the response rate history.

FIG. 7 shows an example of the price setting data stored in the price setting data storage unit 15. As shown in FIG. 7, the price setting data storage unit 15 stores price setting data relating to a standard price, a discount rate, and a discount price according to the number of viewers.

The price determining means 16 determines the value corresponding to the determined number of viewing predictions from the price setting data set in the price setting data storage unit 15 in advance. Since video distribution is possible by broadcast means, it is considered that equipment cost may be small even if the number of viewers is large. And
It is desirable for the activation of the video distribution to return the cost as a value to the viewer who waits until the video is distributed. The preset value setting data does not necessarily have to be data in a table format as shown in FIG.
Rules such as 1 discount for 10 to 100 people and 2 discount for 200 people may be used.

FIG. 8 shows an example of the response time history stored in the response time history storage unit 17. Response time history storage unit 17
Stores information on the actual number of viewing requests, the introduction date and time, the introduction content, and the reception time as a response time history. The reception time refers to the time (unit: minutes) from when the introduction information is transmitted to the viewer to when the joint viewing server 1 receives the viewing request.

The deadline time determining means 18 refers to the response time history in the response time history storage section 17 as shown in FIG. 8 and determines the time at which the video distribution is started by the broadcast means. Here, based on the predicted number of viewings, the last reception time corresponding to or closest to the number of past viewing requests is extracted. The deadline time is calculated by adding the reception time to the scheduled transmission time of the introduction information. Instead of directly determining the deadline time from the last reception time, the deadline time may be determined from a statistical distribution of the reception time.

The introduction information creating means 19 creates introduction information including introduction contents, introducer, consideration information, and deadline time. FIG. 9 shows an example of the introduction information created by the introduction information creating means 19. When the scheduled transmission time comes, the introduction information distribution means 20 transmits the above-mentioned introduction information to the plurality of viewer terminals 2 to be introduced at the same time via the data transmission / reception means 10.

When the data transmission / reception means 30 of the plurality of viewer terminals 2 as the introduction destinations receive the introduction information, the data transmission / reception means 30 notifies the introduction information acquisition means 31 of the reception. Introduction information acquisition means 31
When the introduction information is acquired, the introduction information display means 32 notifies the introduction information display means 32, and the introduction information display means 32 displays the introduction contents, the introducer, consideration information, and the deadline time on a television screen or the like, and presents it to the viewer. . When the viewer wants to view the introduction contents and presses a viewing determination button or the like, the viewing request determination means 3
3 detects the button operation. Viewing request sending means 3
4 confirms that it is before the deadline time, and sends a viewing request including the viewer ID specifying the viewer terminal 2 from the data transmitting / receiving means 30 to the joint viewing server 1 via the network 4.

In the joint viewing server 1, the viewing request receiving unit 22 receives a viewing request from the viewer terminal 2 through the data transmitting / receiving unit 10 until the closing time managed by the closing time management unit 21.

When a viewing request is received, the viewer registration means 23 calculates the elapsed time from the introduction information transmission time. The history information accumulating means 24 accumulates the elapsed time as a response time in the response time history storage unit 17, and accumulates the response rate for each introducer in the response rate history storage unit 14. The response rate is obtained by dividing the number of respondents who sent the viewing request by the number of referrals.

Further, the viewing applicant registration means 23 registers a delivery destination such as a viewer ID from the information of the viewing request, and notifies the video broadcasting delivery means 26 of the registration. The standby instruction transmitting means 25
In order to notify that the viewing request has been accepted, a message instructing to wait until the distribution start time is transmitted to the requesting viewer terminal 2.

The viewer terminal 2 waits until the distribution start time received by the standby means 35. During that time, the standby information display means 36 displays the video start time,
Alternatively, by displaying an advertisement or the like to the viewer, the interest of the viewer can be attracted.

Deadline time management means 21 of joint viewing server 1
When the deadline time comes, the video broadcast distribution means 26 broadcasts the video to the viewer terminal 2 which has received the request.

In the viewer terminal 2, the data transmitting / receiving means 30
The video receiving means 37 receives the video broadcasted from the co-viewing server 1 and displays and reproduces the video received by the reproducing means 38. The reproduction status sending means 39 sends the reproduction status such as whether the viewer has watched the reproduced video to the end to the joint viewing server 1 by the data transmission / reception means 30.

Viewing status grasping means 27 of joint viewing server 1
Grasps the viewing situation of each viewer terminal 2 and subtracts the number of viewers who have not watched to the end from the response rate stored in the response rate history storage unit 14.

As described above, in a referral from a certain introducer to a large number of viewers, a video having a function of appropriately setting a waiting time and returning a price corresponding to the waiting time of the viewer. A joint viewing system can be realized.

FIGS. 10 and 11 are flowcharts showing the processing operation of the video co-viewing system according to the embodiment of the present invention.

First, the processing of the joint viewing server 1 will be described according to the processing flow of the joint viewing server 1 shown in FIG. In the joint viewing server 1, a step S described below is performed.
The processing of 1 to S14 is executed.

In step S1, it is detected whether or not introduction data has been sent from the introducer terminal 3, and if sent, the process proceeds to step S2. In step S2, the introducer is specified with reference to the introducer database 12 and the like.
In step S3, the response rate to the introduction of the specified introducer is acquired from the response rate history storage unit 14. If it cannot be obtained, the process proceeds to step S4, and if it can be obtained, step S5
Move to In step S4, the value set as the initial value by the server operator is set as the response rate.

Next, in step S5, the number of predicted viewing is calculated by multiplying the number of introduced persons of the present introduction by the response rate. In step S6, the price corresponding to the predicted number of viewing is calculated with reference to the price setting data set in the price setting data storage unit 15.

In step S7, based on the predicted number of viewings calculated in step S5, the last reception time corresponding to or closest to the past number of predicted viewings is extracted from the response time history storage unit 17, The deadline time is calculated by adding the reception time to the scheduled transmission time of the introduction information. The reception time refers to the time when the referral information is transmitted to the viewer and the
Indicates the time until a viewing request is accepted.

In step S8, introduction information including introduction contents, introducer, consideration information, and deadline time is created. In step S9, when the scheduled transmission time comes, the introduction information created in step S8 is transmitted via the data transmission / reception means 10 to the audience terminal 2 of the introduction destination (introduced person) all at once.

In step S10, it is monitored whether or not the deadline time has come. If the deadline time has come, step S15 is executed.
Otherwise, the process moves to step S11.

In step S11, if a viewing request from the viewer terminal 2 has been received, the process proceeds to step S12. If no viewing request has been received, the process returns to step S10. In step S12, the elapsed time from the introduction information transmission time is stored in the response time history storage unit 17 as a response time, and the response rate for each introducer is stored in the response rate history storage unit 14. The response rate is obtained by dividing the number of respondents who sent the viewing request by the number of referrals.

In step S13, a viewer ID and the like are registered as distribution destination data from the information of the viewing request. In step S14, a message instructing to wait until the distribution start time is transmitted to viewer terminal 2, and in step S10
Return to

In step S15, when the deadline has come, the video is distributed to the viewer terminal 2 which has received the viewing request by means of broadcasting. Then, in step S16,
The viewing status of each viewer terminal 2 is grasped, and the number of viewers who have not watched until the end is subtracted from the response rate in the response rate history storage unit 14.

Next, the processing of the viewer terminal 2 will be described with reference to the processing flow of the viewer terminal 2 shown in FIG. The viewer terminal 2 executes the processing of steps S20 to S28 described below.

In step S20, the system waits for the introduction information from the joint viewing server 1, and upon receiving the introduction information, proceeds to step S20.
Move to 21. Repeatedly wait until receiving referral information.

In step S21, the contents of introduction, introducer, consideration information, and deadline are extracted from the received introduction information.
It is displayed on a TV screen and presented to the viewer. In step S22, it is detected whether the viewer presses the viewing determination button or the like. If the viewing request is made before the cutoff time, the process proceeds to step S23, and if the viewer does not request viewing or after the deadline has elapsed, the process is terminated.

In step S23, a viewing request including the viewer ID is sent to the joint viewing server 1. Next, in step S24, the process waits for the standby information from the co-viewing server 1. When the standby information is obtained, the process proceeds to step S25.
In step S25, the obtained standby information is displayed, and if the standby information includes a video distribution start time, a reception completion notification, or an advertisement, the information is presented to the viewer.

In step S26, the system waits for the reception of the video,
When the reception of the image is started, the display such as the standby information is deleted. In step S27, the reproduction of the received video is started by receiving the video from the joint viewing server 1. Step S
At 28, it is monitored whether or not the viewing has ended. If the end of the viewing has been detected, the process proceeds to step S29.

In step S29, the viewing end time and the like are transmitted to the co-viewing server 1 as information indicating how far the user has watched.

The processing performed by the joint viewing server 1 and the viewer terminal 2 can be realized by a computer and a software program executed by the computer. The software program can be stored in an appropriate recording medium such as a computer-readable portable medium memory, a semiconductor memory, and a hard disk.

[0061]

As described above, according to the present invention,
In the act of introducing to a large number of viewers, a waiting time is set based on the past referral results of the introducer, and the viewer is compensated for the waiting time, so that the viewer can temporarily wait in a form that can be satisfied This method has the effect that resources for distribution in a network, a server, or the like can be used effectively.

[Brief description of the drawings]

FIG. 1 is a diagram illustrating calculation of a predicted number of viewings and calculation of a deadline time.

FIG. 2 is a configuration diagram of a joint viewing server.

FIG. 3 is a configuration diagram of a viewer terminal.

FIG. 4 is a diagram showing an example of data sent from an introducer terminal.

FIG. 5 is a diagram showing an example of an introducer database.

FIG. 6 is a diagram illustrating an example of a response rate history.

FIG. 7 is a diagram illustrating an example of consideration setting data.

FIG. 8 is a diagram illustrating an example of a response time history.

FIG. 9 is a diagram illustrating an example of introduction information.

FIG. 10 is a diagram showing a processing flow of the joint viewing server.

FIG. 11 is a diagram showing a processing flow of the viewer terminal.

[Explanation of symbols]

 Reference Signs List 1 joint viewing server 2 viewer terminal 3 introducer terminal 4 network

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Makoto Isaji 2-3-1 Otemachi, Chiyoda-ku, Tokyo Within Nippon Telegraph and Telephone Corporation (72) Katsumi Kishida 2--3, Otemachi, Chiyoda-ku, Tokyo No. 1 Nippon Telegraph and Telephone Corporation F-term (reference) 5C061 BB07 BB18 5C064 BB07 BC06 BC16 BC18 BD02 BD03 BD07 BD08 BD09

Claims (6)

[Claims] 1. A system comprising: a plurality of viewer terminals that make a viewing request by introduction; and a server that broadcasts a video to the plurality of viewer terminals that have made the viewing request. Means for identifying the introducer in response to the introduction from the introducer, means for calculating the predicted number of viewings from the past performance of the introducer, and the cutoff time or broadcast method for the viewing request from the predicted number of viewings. Means for determining a start time for distributing the video, means for creating introduction information including the contents of the introduction, the introducer, and the deadline time or the start time for distribution, and distributing the information to the viewer terminal of the referee; Means for accepting a viewing request from the viewer terminal until the distribution start time, and when the deadline time or the distribution start time has come, broadcasting the video to the viewer terminal that has requested the viewing; Achievements Means for accumulating historical data,
A means for receiving the introduction information from the server, a means for displaying the received introduction information, a means for detecting a viewer's viewing request, and a means for transmitting the viewing request to the server; Means for receiving and playing back a video. 2. The video co-viewing system according to claim 1, further comprising: a storage unit configured to store setting information relating to a value of a waiting time according to the number of views; and referring to the setting information relating to the price based on the predicted number of viewing. A video co-viewing system comprising: means for determining a price; and creating introduction information including the determined price information. 3. A method for broadcasting a video to a plurality of viewer terminals that have made a viewing request in response to a viewing request from a viewer terminal of a referee generated by an introducer's referral action. Identifying the introducer with respect to the introduction from the introducer, calculating the predicted number of viewings from the past performance of the introducer, Determining a start time for distributing the information, creating introduction information including an introduction content, an introducer, a deadline time or a distribution start time, and distributing the information to a referee's viewer terminal; A viewing request from the viewer terminal is received until the start time, and when the deadline time or the distribution start time is reached,
A joint viewing video distribution method, comprising the steps of broadcasting a video to a viewer terminal that has made a viewing request, and accumulating history data of introduction results. 4. A method according to claim 3, wherein the value is determined by referring to setting information relating to a value of a waiting time set in advance according to the number of views, based on the predicted number of views. And generating introduction information including the determined value information. 5. A program for distributing a video to a plurality of viewer terminals that have made a viewing request in response to a viewing request from a viewer terminal of a referee generated by an introducer's referral action. A recording medium for recording, a process of specifying an introducer in response to an introduction from an introducer, a process of calculating a predicted number of views from the past performance of the introducer, and a deadline time of a viewing request from the predicted number of views. Alternatively, a process of determining a start time of distribution of a video by broadcast means, a process of creating introduction information including an introduction content, an introducer, a deadline time or a distribution start time, and distributing the information to a referee's viewer terminal Receiving a viewing request from the viewer terminal until the deadline time or the distribution start time, and when the deadline time or the distribution start time is reached, broadcasts a video to the viewer terminal that has requested the viewing. Where to deliver A program recording medium for joint viewing video distribution, characterized by recording a program for causing a computer to execute the process of storing history data of the introduction results. 6. A program for distributing a video to a plurality of viewer terminals that have made a viewing request in response to a viewing request from a viewer terminal of a referee generated by an introducer's referral action. A process of identifying an introducer in response to an introduction from an introducer; a process of calculating a predicted number of views from the past results of the introducer; and a cutoff time or a broadcast means of a viewing request from the predicted number of views. A process of determining a start time for distributing a video, a process of creating introduction information including an introduction content, an introducer, a deadline time or a distribution start time, and distributing the information to a referee's viewer terminal; Or a process of receiving a viewing request from the viewer terminal until the distribution start time, and, when the deadline time or the distribution start time has come, broadcasting a video to the viewer terminal that has requested the viewing, Referral achievements A program for joint viewing video distribution for causing a computer to execute processing for accumulating history data.