JP2002354447A - Method for distributing video - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a technology concerning to a method for distributing video through a network in which an uncompressed video source file is compressed utilizing a data file including a compression rate based on sequentially reproduced sample videos compressed in a user terminal or a previously registered data file and transmitted to the user terminal where appropriate videos are reproduced sequentially. SOLUTION: As shown on the drawing, the system for operating a video distribution method according to this embodiment comprises a user terminal 10, a base station 12, a switching center 13, a server 20 for storing a video source file, and a communication network (network, the Internet 100), e.g. the Internet, for interconnecting them.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a video distribution method, and more particularly to a video distribution method to a portable terminal such as a portable telephone via a network.

[0002]

2. Description of the Related Art According to the prior art, the colorization of the liquid crystal display section of a mobile phone has a large share, and the mobile phone having a monochrome liquid crystal display section has almost disappeared from the new market.

[0003] A general user obtains an image to be displayed during standby through the Internet or the like. However, the type of image that can be displayed (GIF, JPEG, etc.), the resolution that can be displayed, the number of colors, the size of an image file that can be stored, and the like differ depending on the type of mobile phone. For this reason,
An image provider needs to prepare several different types of image files, such as the image format, resolution, and number of colors, from one image file. Further, a general user has to find an image file that can be displayed on his or her mobile phone or download it to a PC or the like to process it.

[0004] In addition, the CDMA service will start.
Data communication speed (64 kbps to 2 Mbps)
Is a mobile phone (9.6 kbps) or PHS (64 kbps)
s), the data communication speed is such that video can be distributed, and M is used as a video compression method for mobile terminals.
Compression methods similar to PEG4 and MPEG4 have been proposed.

Japanese Patent Application Laid-Open No. Hei 6-324662 discloses an image display control unit for storing display state data of each displayed image in a display state management table, and a user interest of each image based on the display state data. The interest measurement unit that estimates the degree of interest, and videos with high interest are displayed with high display quality,
For a video with a low degree of interest, the display specification of each video is changed to display with reduced display quality, and the video display control unit transfers the display specifications to the display specification management table of the video input unit. A video display processing system consisting of a video input control unit that controls the video compression unit to compress data displays the desired video information efficiently, reducing the amount of video data transfer or the load of display processing. The technology to do this is described.

Further, Japanese Patent Application Laid-Open No. 9-284567 discloses that a terminal connected to a network notifies an encoder of attribute information indicating a communication transfer rate and a protocol via a network and a communication interface. The encoding device selects an encoding method based on the attribute information, encodes the information signal from the input device according to the selected encoding method, and transmits the encoded information signal to the network through the communication interface, so that different information transfer rates are used. A description is given of a data transmission device and a data transmission method capable of uniformly handling data even in access.

[0007]

However, the prior art has the following problems.

[0008] MPEG4 and a compression method similar to MPEG4 have been proposed, but none has been formulated as a unified standard, and drawing speed, resolution, number of display colors,
Compatibility with mobile terminals having different memory sizes, arithmetic processing speeds, and the like becomes complicated. For this reason, the distribution of video has been inevitably more complicated than the distribution of image files.

[0009] In a video transmission method in which a communication interface and a communication protocol are set in a state in which a transmission path is properly secured, in a video distribution to a portable terminal which largely depends on the state of the transmission path (radio wave condition), the There was a problem that services that maintained quality could not be adequately handled.

The present invention has been made in view of the above problems, and has as its object to provide a data file including a compression rate based on a video image sequentially reproduced from a compressed sample video image at a user terminal, or Another object of the present invention is to provide a technology related to a video distribution method via a network that compresses an uncompressed video source file using a pre-registered data file, transmits the compressed video source file to a user terminal, and sequentially reproduces an appropriate video. .

[0011]

The gist of the present invention described in claim 1 is a video distribution method via a network such as the Internet, wherein a server that distributes a video of a video source file to a user terminal includes: A first step of creating user data for performing video compression corresponding to the user terminal, and when receiving access information including a user ID and a password of a user operating the user terminal, selecting the user data. A second step of generating a compressed video file from the video source file based on the user data and transmitting the compressed video file to the user terminal; And a third step of sequentially reproducing the video data. Exist for. The gist of the present invention according to claim 2, wherein the first step corresponds to the compressed video file that receives the access information and the model of the user terminal via the network and transmits the compressed video file to the user terminal. A fourth step of creating and storing the user data including a compression method, a compression ratio, and a screen size, and transmitting a sample video compressed based on the user data to the user terminal; Receiving video confirmation / adjustment information from the user terminal corresponding to the sample video sequentially reproduced by the sequential reproduction means, based on a video adjustment instruction included in the video confirmation / adjustment information, 5. The video distribution method according to claim 1, further comprising: a fifth step of updating the included compression ratio or the size of the screen. Exist for. The gist of the present invention according to claim 3, wherein in the fifth step, the sample video is sequentially reproduced by the compressed video file sequential reproduction means, and the user operating the user terminal inputs the video confirmation / adjustment. And updating the user data based on video compression ratio adjustment information and screen size adjustment information contained in the video confirmation / adjustment information received from the user terminal. Item 2 is a video distribution method.
The gist of the present invention is that in the third step, the user terminal receives a stop signal indicating that the sequential playback of the compressed video file by the compressed video file sequential playback unit has been interrupted. The method may further include storing a video interruption information including an interruption video title, a remaining time, and a playback date for the video source file in the user data, wherein the second step is previously registered from the user terminal. If the video interruption information is included in the user data when the access information is received, the interruption video title of the video source file corresponding to the video interruption information, the remaining time of the reproduction video, and the reproduction date are stored. And send it to the user together with the form of the list of the video title, playback time and update date of the video source data Prompting the selection of a desired video, and, if the video corresponding to the interrupted video title is selected by the user, before the data corresponding to the remaining time, the data corresponding to the predetermined time played immediately before the interrupt. To create a compressed video file that has been compressed,
Transmitting to the user terminal. 4. The video distribution method according to claim 1, further comprising: The gist of the present invention according to claim 5, wherein in the sixth step, when the stop signal is received from the user terminal, is there a save instruction to save the video interruption information transmitted with the stop signal? 5. The video distribution method according to claim 4, wherein it is determined whether the video interruption information is stored in the file compression data only when the storage instruction is given. According to another aspect of the present invention, in the second step, when the access information registered in advance from the user terminal is received, it is possible to select whether to transmit the compressed sample video. The method according to any one of claims 1 to 5, further comprising a step of executing the fifth step when transmitting a form including information and receiving a selection requesting transmission of the sample video from the user terminal. The video distribution method described in (1). The gist of the present invention according to claim 7, wherein the first step or the second step transmits a sample video compressed based on the user data to the user terminal, and sequentially reproduces the compressed video file. The user terminal when the sequential reproduction of the sample video is being performed by means, or the server has obtained, based on information on the communication quality between the user terminal and the network,
7. The video distribution method according to claim 1, further comprising the step of updating the compression ratio of the user data so as to correspond to the communication quality. The gist of the present invention according to claim 8 is that, when update processing such as addition or update of a video source file is performed on the server, or at predetermined intervals, the title of the video source file corresponding to the update processing and the playback time For the user terminal in which a list such as is registered in advance,
8. The method according to claim 1, wherein the electronic mail is transmitted by electronic mail.
The video distribution method according to any one of the above. The gist of the present invention according to claim 9 is a billing method using the video distribution method according to any one of claims 1 to 8, wherein a server that performs video distribution sets user data set for each user terminal. The transmission history of the video corresponding to the video source file to the user terminal is stored, and the charging process for the user terminal is performed in accordance with the rank and the reproduction time of the video source file based on the transmission history. The billing method is characterized in that: The gist of the present invention according to claim 10 is to mix an image file related to a corporate advertisement for a predetermined time with a video to be transmitted, and to an advertiser who is a provider of the corporate advertisement based on the length and distribution frequency of the corporate advertisement. The billing method according to claim 9, wherein billing processing is performed for the billing method. The gist of the present invention described in claim 11 resides in a storage medium in which a program capable of executing the video distribution method according to any one of claims 1 to 8 is recorded.

[0012]

Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 is a diagram showing a configuration of a system for operating the video distribution method according to the present embodiment.

As shown in FIG. 1, a system for operating the video distribution method according to the present embodiment includes a user terminal 10.
, A base station 12, an exchange 13, a server 20 for storing video source files, and a communication network (network, Internet) 100 such as the Internet for interconnecting them.

The user terminal 10 is a mobile phone, a mobile terminal having a mobile phone function, a mobile terminal connected to a mobile phone, or the like, and includes a display unit 1 such as a liquid crystal screen, a network connection function 2, a compressed video file, and the like. Sequential playback function (compressed video file sequential playback means) 3.

The network connection function 2 is a function for connecting to the network 100 via the base station 12 and the exchange 13.

In the compressed video file sequential playback function 3, the server 20 receives the compressed data of the video transmitted via the network 100 and displays the data as a sequential video. Examples of specific images include movies, dramas, news, sports, and the like.

The server 20 includes a control unit 21, a user authentication function 22, a video source file search function 23 for searching for an uncompressed video source file, and user data including mobile terminal model data stored in advance. A compression method / compression ratio / screen size determination function 24 for determining a screen size or the like from a video file, a video source file compression function 25, and a memory 26 for storing a data file.

When the server 20 is connected from the user terminal 10 via the network 100, the control unit 21 uses the user authentication function 22 to specify the user and permit the connection.

The user operates the user terminal 10 to select a video source file to be displayed using the video source file search function 23 of the server 20 or the like.

The server 20 reads the user data registered in advance in the memory 26, determines the compression method, compression ratio, screen size, etc. of the video source file by the compression method / compression ratio / screen size determination function 24, and The video source file is compressed by the source file compression function 25 and transmitted to the user terminal 10 via the network 100.

The user terminal 10 sequentially decompresses the compressed data transmitted from the server 20 and displays it on the display unit 1 of the user terminal 10. Next, a video distribution method will be described in detail with reference to embodiments. In this embodiment, the network 1
00 is described as the Internet 100.

The user terminal 10 is a portable telephone having a display unit 1, a portable terminal having a portable telephone function, a portable terminal connected to a portable telephone, or the like.
And a compressed video file sequential playback function 3 for sequentially playing back compressed video source files.

The user terminal 10 connects to the Internet 100 via the base station 12 and the exchange 13, and accesses the server 20 via the Internet 100.

FIG. 2 is a diagram showing a flow of operation in the user terminal 10 and the server 20 in FIG.

FIG. 3 is a display example on the display unit 1 of FIG. In FIG. 3, input of a user ID and a password,
Shows the form for new user registration.

FIG. 4 shows another display example on the display unit 1 of FIG. FIG. 4 shows a form for input in a mobile phone model or the like.

FIG. 5 is another display example on the display unit 1 of FIG. FIG. 5 shows a form for inputting changes in image size and compression ratio.

FIG. 6 shows another display example on the display unit 1 of FIG. FIG. 6 shows a form for inputting selection of a video file.

FIG. 7 shows another display example on the display unit 1 of FIG. FIG. 7 shows a form when the playback video is interrupted.

Referring to FIG. 2 and FIGS. 3 to 7, the flow of operation in the user terminal 10 and the server 20 will be described in detail.

The user accesses the server 20 connected to the Internet 100 having a homepage via the user terminal 10 (step A1).

In response, the server 20 sends a user ID entry field 01DP shown in FIG.
Then, a user authentication form 01FM including a password input field 02DP and a new user registration check box 03DP is transmitted (step A2).

The user terminal 10 has a user authentication form 0
1FM is displayed on the display unit 1. The user is the user terminal 1
0, the user accesses the homepage established on the server 20 for the first time, inputs user ID and password access information for new user registration, and selects the check box 03DP included in the user authentication form 01FM. Send (new user registration) (step A3).

The server 20 confirms the received access information and displays the video transmitted via the Internet 100. The server 20 has an input field 04DP for the model of the mobile phone shown in FIG. Registration form 02F including input field 05DP of the model for displaying the video
M is transmitted (a data registration form is transmitted) (step A4).

The user terminal 10 has a registration form 02FM
Is displayed on the screen, and the user operates the user terminal 10 to input the model of the mobile terminal into the input field 04DP. When a notebook PC, PDC, or the like is used, the corresponding model is entered in the input field 05DP. The input user data is transmitted to the server 20 (user terminal data).
(Step A5).

The server 20 stores the received user data in the memory 26. (Step A6).

The server 20 refers to the user data including the access information of the user and the data of the models such as the mobile phone, the notebook PC, and the PDC, and determines the compression ratio of the sample video to be sent to the user, the screen size, and the like. Is determined, and the sample video is compressed (compression rate determination / sample compression) (step A7).

The server 20 adjusts the compressed sample image, the compression ratio and the screen size as shown in FIG. 5 for adjusting the compression ratio and the screen size, respectively.
A confirmation form 03FM including P is transmitted to the user terminal 10 (transmission of the compressed sample video) (step A
8).

The user terminal 10 reproduces the transmitted sample video, and after the reproduction of the sample video is completed, displays the confirmation form 03FM. When a change is necessary, the user transmits information of image confirmation / adjustment including compression ratio adjustment or screen size adjustment (screen size / compression ratio confirmation).
(Step A9).

The server 20 saves the received video confirmation / adjustment information including the compression ratio adjustment and the screen size adjustment in addition to the user data in the memory 26 (step A10). When the compression ratio or the screen size is changed by the user, the process returns to step A7 (not shown). If there is no change in the compression ratio and the screen size, the user registration ends here.

The server 20 transmits information of the video source file to be selected by the user to the user terminal 10 (transmission of video file information) (step A11). In step A3, when a user ID and a password are input and transmitted, the server 20 executes the user authentication function 22
And user I of user data stored in advance.
D and the password are compared, and if they match, steps A4 to A10 are omitted (not shown) and step A11 is executed.

When the stored user data includes information on the video source file whose reproduction has been suspended by the user, the information on the suspended video source file is transmitted together with the information on the video source file.

The user terminal 10 stores various video titles 07TL, a reproduction time 08DP, and an update date 0 as shown in FIG.
When there is a video file whose reproduction has been interrupted by the user (there is video interruption information) with the display of 9DP, an interruption form 04FM including an interrupted video title 10DP, a remaining time 11DP, and a reproduction date 12DP is displayed. The user selects a desired video source file and transmits it to the server 20 (selection of a video file) (step A12).

The server 20 determines a compression ratio and a screen size based on the user data, and compresses the video source file selected by the user (compression of the video file).
(Step A13).

The compressed video file subjected to the compression processing is transmitted to the user terminal 10 (transmission of the video file) (step A14). When the video source file whose reproduction has been interrupted is selected, the video data in the video source file shorter than the already reproduced reproduction time 08DP by a predetermined time is deleted (before the data corresponding to the remaining time 11DP, immediately before the interruption, Then, the video file subjected to the compression process is transmitted to the user terminal 10 (not shown).

The user terminal 10 receives the compressed video file and sequentially reproduces the video file (reproduction of the video file) (step A15).

When the user wants to stop the video being reproduced, the user terminal 10 transmits a stop signal to the server 20 (transmission of a stop signal) (step A16).

The server 20 sends the user terminal 10
A stop form 05FM including a check box 13DP for making a selection regarding interruption as shown in FIG. 7 is transmitted (stop form transmission) (step A17).

The user terminal 10 has a stop form 05FM
Is displayed, and the user makes an input to the stop form 05FM displayed on the user terminal 10 and transmits it to the server 20 (stop condition transmission) (step A18).

The server 20 checks the check box 1 corresponding to “see later” in the stop form 05FM.
When the 3DP is selected (save instruction to save the video interruption information), the video interruption information including the video title, the reproduction time, the reproduction date, and the remaining time related to the video source file being reproduced is stored in the user data (user Data storage)
(Step A19).

Note that the user terminal 10 such as a portable terminal
Upon receiving the compressed sample video and performing the sequential playback process, the server 20 obtains information on the communication quality with the Internet 100 and notifies the server 20 of the communication quality information. Based on the quality information, the compression rate of the video source file can be made to correspond to the communication quality.

As described above, the information such as the model of the user terminal 10 such as the portable terminal stored in the server 20 is used to determine the compression method, the compression ratio, and the screen size of the uncompressed video source file. A method for compression can be determined and distributed to the user terminal 10.

The uncompressed video source file registered in the server 20 is subjected to a compression process based on user data including a pre-registered compression method, compression ratio, screen size, etc. Can be delivered to In the user terminal 10, the transmitted compressed file can be sequentially reproduced.

Further, in the user terminal 10, the video being reproduced is interrupted, and when a request for reproduction is made later by the user terminal 10, the video can be redistributed from the point where the reproduction was interrupted.

Since the video distribution method according to the embodiment is configured as described above, the following effects can be obtained.

Since the server 20 does not need to store a plurality of video compression files having different screen sizes and compression ratios for one video source file, the storage area of the server 20 can be saved.

The video source file is compressed based on the user file registered in the server 20 in advance and the user terminal 1
0, the image display can be performed on the display units 1 of all the registered user terminals 10. In addition, since the compression rate is too low, the processing speed of the terminal cannot keep up with the processing speed, and it is possible to avoid problems such as skipping video or slow playback.

Since the user terminal 10 to which the compressed video file is transmitted from the server 20 sequentially expands and reproduces the compressed video file, a memory for storing all of the compressed video file is unnecessary.

Even if the user interrupts the playback of the video file, the title of the interrupted video source file and the remaining time are stored in the server 20, so that the user can start playback from the continuation of the interrupted video file.

Since the video file can be reproduced using the portable terminal, the user can view the video file regardless of time and place.

It is to be noted that the user operates a VTR (Video Ta).
A video file recorded by a video recorder or the like can be uploaded to the server 20 via a network, and a video distribution method using the uploaded video source file can be easily executed.

In the server 20, the transmission history of the video source file to the user terminal 10 is stored in the user data, so that the user terminal 10 is charged according to the rank and the reproduction time of the video source file. Processing can be performed.

Further, by mixing video files such as corporate advertisements for several seconds to several tens of seconds with the transmitted compressed video files in the server 20, the server provider can obtain advertising revenue from advertisers.

Further, when the video source file is updated in the server 20 or every predetermined period, the title and the reproduction time of the new video source file are notified to the user terminal 10 registered in advance by e-mail. Can be.

In the present embodiment, the present invention is not limited to this, and can be applied to a technique relating to a video distribution method suitable for applying the present invention.

The number, position, shape, and the like of the above-mentioned constituent members are not limited to the above-described embodiment, but can be set to a number, position, shape, and the like suitable for carrying out the present invention.

In the drawings, the same components are denoted by the same reference numerals.

[0068]

Since the present invention is configured as described above, the following effects can be obtained.

The server does not need to store a plurality of video compression files having different screen sizes and compression ratios for one video source file, and can save the storage capacity of the server.

[0070] Further, in order to store information relating to the compression of the video source file for each pre-registered user terminal and transmit the compressed data based on this information to the user terminals, the compressed video data corresponding to all the registered user terminals are stored. Data can be sent.

Further, by reproducing the sample video in the user terminal in advance, it is possible to prevent the inconvenience that the processing speed of the user terminal cannot keep up with the processing speed because the compression ratio is too low, and the video jumps or the slow playback is performed. .

In the user terminal, since the compressed video file transmitted from the server is sequentially expanded and reproduced, a memory for storing all the compressed video files becomes unnecessary.

By storing the title and the remaining time of the interrupted video in the server, the interrupted video file can be reproduced from the continuation.

By using the portable terminal, the user can reproduce and view the video file at any time and place.

[Brief description of the drawings]

FIG. 1 is a diagram showing a configuration of a system for operating a video distribution method according to an embodiment of the present invention.

FIG. 2 is a diagram showing a flow of operation in a user terminal and a server in FIG. 1;

FIG. 3 is a display example on a display unit in FIG. 1;

FIG. 4 is another display example on the display unit in FIG. 1;

FIG. 5 is another display example on the display unit in FIG. 1;

FIG. 6 is another display example on the display unit in FIG. 1;

FIG. 7 is another display example on the display unit in FIG. 1;

[Explanation of symbols]

01DP, 02DP, 04DP, 05DP input fields 01FM user authentication form 02FM registration form 03DP check box 03FM confirmation form 04FM interruption form 05FM stop form 06DP compression rate adjustment 07DP screen size adjustment 07TL video title 08DP playback time 09DP update date 1 display section 2 network Connection Function 3 Compressed Video File Sequential Playback Function (Compressed Video File Sequential Playback Means) 10 User Terminal 10DP Suspended Video Title 11DP Remaining Time 12 Base Station 12DP Playback Date 13 Exchange 13DP Check Box 20 Server 21 Control Unit 22 User Authentication Function 23 Video Source file search function 24 Compression method / compression ratio / screen size determination function 25 Video source file compression function 26 Memory 100 Communication Ttowaku (network, Internet)

Claims (11)

[Claims] 1. A video distribution method via a network such as the Internet, wherein a server for distributing video of a video source file to user terminals creates user data for performing video compression corresponding to each user terminal. Generating a compressed video file based on the user data from the video source file selected by the user when receiving access information including a user ID and a password of a user operating the user terminal; A second step of transmitting the compressed video file to the user terminal; and a third step of sequentially reproducing the compressed video file by a compressed video file sequential playback unit of the user terminal. Video distribution method. 2. The method according to claim 1, wherein the first step includes receiving the access information and the model of the user terminal via the network, and compressing the compressed video file to be transmitted to the user terminal. A fourth step of creating and storing the user data including the user data and a screen size; transmitting a sample video compressed based on the user data to the user terminal; and sequentially reproducing the compressed video file by the compressed video file sequential reproducing means. Receiving information of video confirmation and adjustment from the user terminal corresponding to the sample video,
Based on a video adjustment instruction included in the video confirmation / adjustment information, the compression ratio included in the user data, or
5. The method according to claim 1, further comprising: updating a size of the screen. 3. The method according to claim 1, wherein the fifth step is to cause the compressed video file sequential reproducing means to sequentially reproduce the sample video, and to prompt a user operating the user terminal to input the video confirmation / adjustment. 3. The method according to claim 2, further comprising the step of: updating the user data based on video compression ratio adjustment information and screen size adjustment information included in the video confirmation / adjustment information received from the PC.
Video distribution method described in 1. 4. The method according to claim 3, wherein the third step comprises: receiving, at the user terminal, a stop signal indicating that the sequential playback of the compressed video file by the compressed video file sequential playback means has been interrupted; A sixth step of storing video interruption information including a suspended video title, a remaining time, and a reproduction date in the user data, wherein the second step is to store the access information registered in advance from the user terminal. When the video interruption information is included in the user data when received, the interruption video title of the video source file corresponding to the video interruption information, the remaining time and the reproduction date of the reproduced video, and the stored video source data. Of the video title, playback time, and update date list that the user wants to transmit. And, if the user selects a video corresponding to the interrupted video title, a compression process is performed by adding data corresponding to a predetermined time reproduced immediately before the interruption before data corresponding to the remaining time. Creating a compressed video file to which the compressed video file is applied and transmitting the compressed video file to the user terminal. 4. The video distribution method according to claim 1, further comprising: 5. The method according to claim 6, wherein, when receiving the stop signal from the user terminal, the sixth step determines whether there is a save instruction to save the video interruption information transmitted in accordance with the stop signal. 5. The video distribution method according to claim 4, wherein the video interruption information is stored in the file compression data only when instructed. 6. The second step includes, when receiving the access information registered in advance from the user terminal, transmitting a form including information for selecting whether or not to transmit the compressed sample video. The video distribution method according to any one of claims 1 to 5, further comprising a step of executing the fifth step when receiving a selection requesting transmission of the sample video from the user terminal. . 7. The first step or the second step comprises transmitting a sample video compressed based on the user data to the user terminal, and transmitting the sample video by the compressed video file sequential reproducing means. The user terminal when sequential playback is being performed, or the server obtained, based on information on the communication quality between the user terminal and the network, the compression rate of the user data to the communication quality 7. The video distribution method according to claim 1, further comprising the step of updating correspondingly. 8. When an update process such as addition or update of a video source file is performed on the server, or at predetermined intervals, a list of titles, playback times, and the like of the video source files corresponding to the update process is registered in advance. 8. The video distribution method according to claim 1, wherein the electronic mail is transmitted to the selected user terminal by e-mail. 9. A billing method using the video distribution method according to claim 1, wherein a server for performing video distribution includes, in a user data set for each user terminal, user data to the user terminal. The transmission history of the video corresponding to the video source file is stored, and the charging process for the corresponding user terminal is performed according to the rank and the reproduction time of the video source file based on the transmission history. Billing method. 10. A video file relating to a corporate advertisement for a predetermined time is mixed with a transmitted video, and an advertiser who is a provider of the corporate advertisement is charged based on the length and distribution frequency of the corporate advertisement. 10. The charging method according to claim 9, wherein: 11. A storage medium on which a program capable of executing the video distribution method according to claim 1 is recorded.