JP2018074348A - Video processing device, video processing method and video processing program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a video processing device capable of implementing remote viewing on a terminal device with a lower processing load and smaller storage capacity than the prior arts.SOLUTION: The present invention relates to a video processing device configured to convert a first content that is streaming-received and encoded in accordance with a first system into a second content that is encoded in accordance with a second system, and perform streaming transmission for streaming reproduction in a terminal device. The video processing device comprises: a conversion part which receives a transmission request of the second content from the terminal device, converts the first content into the second content in a case where a file for terminal device including the second content is not stored in a storage device, and stores the file for terminal device including the second content in the storage device; and a transmission part which performs the streaming transmission of the second content converted by the conversion part to the terminal device. In a case where the file for terminal device is stored in the storage device, the transmission part performs the streaming transmission of the second content included in the file for terminal device to the terminal device.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a video processing device, a video processing method, and a video processing program, and more particularly, to a technique for transcoding video content and streaming it.

  In recent years, with the spread of terminal devices such as smart phones and tablet terminals, video content such as TV programs received by video processing devices such as recording devices and STB (Set Top Box) in real time on terminal devices used by users. Streaming transmission and playback technologies are widespread. Accordingly, the user can remotely view the video content of the program being broadcast or the recorded program regardless of the location.

  The screen size differs greatly between the terminal device and the television to which the video processing device is normally connected. Further, when a large volume of video content is transmitted to the terminal device, the communication load increases. Thus, the video processing apparatus performs transcoding to convert the video content received by the video processing apparatus into a small-capacity video content for the terminal device, and then transmits the video content to the terminal device (for example, Patent Document 1).

  Conventionally, such transcoding is performed at the time of video content transmission from the video processing device to the terminal device, at the time of video content recording at the video processing device, or at a predetermined timing after video content recording.

JP 2006-295586 A

  However, if transcoding is performed during transmission of video content from the video processing device to the terminal device, the transcoding must be performed every time the video content is played back by the terminal device. In particular, when the same video content is played back a plurality of times, transcoding must be performed every time playback is performed, increasing the processing load on the video processing device.

  In addition, in the method of transcoding video content in the video processing device and storing the video content for the terminal device in a storage device such as an HDD (Hard Disk Drive), even the video content that is not played back by the terminal device is stored. Will be transcoded. For this reason, the processing load of the video processing device increases, and the storage capacity of the storage device that stores the transcoded video content becomes insufficient.

  Furthermore, in the method of transcoding reserved video content at a predetermined timing after recording, transcoding is executed during the idle time of the video processing device, but there is no guarantee that transcoding of other video content will not be executed during that time. Absent. For example, when the remote terminal makes a playback request for another video content during transcoding, the video processing device stops the transcoding currently being executed and transcodes the video content requested to be played back. Must be executed preferentially. For this reason, the transcode that has been performed until the cancellation is wasted, and the transcoding must be performed again in the idle time of the video processing apparatus, which increases the processing load on the video processing apparatus.

  The present invention has been made in view of such circumstances, and a video processing apparatus, a video processing method, and a video capable of realizing remote viewing on a terminal device with a lower processing load and a smaller storage capacity than conventional ones. An object is to provide a processing program.

  (1) In order to achieve the above object, a video processing apparatus according to an embodiment of the present invention provides a second content encoded by the second method, the first content encoded by the first method received by streaming. A video processing apparatus that converts to content and performs streaming transmission for streaming playback on a terminal device, the terminal device receiving a transmission request for the second content from the terminal device, and including the second content in a storage device A conversion unit that converts the first content into the second content and stores the terminal device file including the second content in the storage device when the file for storage is not stored; and A transmission unit for streaming-transmitting the converted second content to the terminal device, wherein the transmission unit stores the file for the terminal device When stored in the location, the streaming transmission of the second content included in the terminal device file to the terminal device.

  (9) A video processing method according to another embodiment of the present invention converts a first content encoded by the first method received by streaming into a second content encoded by the second method, and a terminal device. A video processing method for streaming transmission for streaming playback in a network, wherein the second content transmission request is received from the terminal device, and the file for the terminal device including the second content is not stored in the storage device In this case, the step of converting the first content into the second content and storing the terminal device file including the second content in the storage device, and the converted second content in the terminal device. Transmitting the streaming, and in the streaming transmitting step, the terminal device file is stored in the storage device. When stored, the streaming transmission of the second content included in the terminal device file to the terminal device.

  (10) A video processing program according to another embodiment of the present invention converts the first content encoded by the first method received by streaming into the second content encoded by the second method, and the terminal device A video processing program for causing a computer to function as a video processing device that performs streaming transmission for streaming reproduction in the computer, wherein the computer receives a transmission request for the second content from the terminal device, and stores the request in the storage device Conversion for converting the first content into the second content and storing the terminal device file including the second content in the storage device when the terminal device file including the second content is not stored. And transmission for streaming transmission of the second content converted by the conversion unit to the terminal device To function as the transmitting unit, when the terminal device file is stored in the storage device, the streaming transmission of the second content included in the terminal device file to the terminal device.

  The video processing program according to the embodiment of the present invention may be distributed via a computer-readable non-transitory recording medium such as a CD-ROM (Compact Disc-Read Only Memory) or a communication network such as the Internet. Needless to say, you can. In addition, the present invention can be realized as a semiconductor integrated circuit that realizes part or all of the video processing device, or as a system including the video processing device.

  According to the present invention, remote viewing on a terminal device can be realized with a lower processing load and a smaller storage capacity than before.

It is a figure which shows the structure of a video processing system. It is a block diagram which shows the structure of a video processing apparatus. It is a figure which shows an example of the management file memorize | stored in the memory | storage device. It is a flowchart which shows an example of the process sequence of a video processing apparatus. It is a flowchart which shows an example of the process sequence of a video processing apparatus.

[Outline of Embodiment of the Present Invention]
First, the outline of the embodiment of the present invention will be listed and described.
(1) The video processing apparatus according to an embodiment of the present invention converts the first content encoded by the first method received by streaming into the second content encoded by the second method, and the terminal device A video processing apparatus that performs streaming transmission for streaming reproduction of the terminal, receives a transmission request for the second content from the terminal apparatus, and a file for the terminal apparatus including the second content is not stored in the storage device And converting the first content into the second content and storing the terminal device file including the second content in the storage device; and converting the second content converted by the conversion unit into the second content. A transmission unit that performs streaming transmission to the terminal device, and the transmission unit is configured to store the terminal device file in the storage device. , Streaming transmitting the second content included in the terminal device file to the terminal device.

  According to this configuration, when a viewing request for the second content is made by a user of the terminal device, a transmission request for the second content is made from the terminal device to the video processing device. Based on the transmission request, the video processing device converts the first content into the second content, and stores the converted second content in the storage device as a file for the terminal device. For this reason, when the user makes a viewing request for the same second content again, the video processing apparatus does not need to execute a conversion process for obtaining the second content. For this reason, remote viewing on the terminal device can be realized with a processing load of the video processing device lower than that of the prior art. The content conversion process is executed when a content viewing request is made, and the converted second content is stored in the storage device as a terminal device file. For this reason, the storage capacity of the storage device is less likely to be insufficient than when the conversion process and the storage process to the storage device are performed each time the first content is recorded.

  (2) Moreover, the said conversion part is based on the management file which shows whether the said file for terminal devices containing the said 2nd content with respect to the said program is memorize | stored in the said memory | storage device for every program. The necessity of conversion of the first content into the second content may be determined.

  According to this configuration, the conversion unit can know whether or not the first content has been converted into the second content by referring to the management file. Also, by using the management file, it is possible to manage whether or not the first content has been converted without changing the header or the like of the first content.

  (3) Moreover, the said conversion part contains the said 2nd content with respect to the said program, when performing the said conversion about the program with which conversion from the said 1st content to the said 2nd content was reserved in advance Whether or not the conversion is necessary may be determined according to whether or not a device file is stored in the storage device.

  According to this configuration, if the remote viewing of the second content has already been performed for a program that has been reserved for conversion from the first content to the second content in advance, the file for the terminal device is stored in the storage device. Yes. For this reason, in such a case, the conversion unit does not perform conversion from the first content to the second content. Thereby, it is possible to prevent the processing load of the video processing apparatus from increasing.

  (4) The video processing apparatus described above further includes a writing unit that writes the second content converted by the conversion unit onto a recording medium, and the writing unit includes the second content file including the second content. Is stored in the storage device, the terminal device file may be written to the recording medium.

  According to this configuration, if remote viewing of the second content has already been performed and the terminal device file is stored in the storage device, the writing unit performs a so-called move process of writing the terminal device file to the recording medium. When executing, the terminal device file is written to the recording medium. Thereby, the conversion process from the first content to the second content in the conversion unit can be omitted. Thereby, it is possible to prevent the processing load of the video processing apparatus from increasing.

  (5) The above-described video processing apparatus may further include a deletion unit that deletes the file for the terminal device stored in the storage device in accordance with a predetermined rule.

  According to this configuration, the file for the terminal device can be deleted in order to prevent a situation in which the free capacity of the storage device is insufficient and new content cannot be recorded. Thereby, it is possible to prevent the storage capacity of the storage device from being insufficient.

  (6) The deletion unit is configured to create a terminal device file including the second content created based on the transmission request based on a conversion instruction from the first content to the second content by a user. Further, the terminal device file including the second content may be deleted with priority.

  According to this configuration, the terminal device file created during remote viewing on the terminal device can be deleted in preference to the terminal device file created based on the user's conversion instruction. Since the latter terminal device file is created based on the user's instruction, the user is highly likely to view the file. On the other hand, the former terminal device file has already been viewed by the user. Compared with, the possibility of viewing is low. As a result, it is possible to preferentially delete the terminal device file that is considered to be less likely to be watched while leaving the terminal device file that is likely to be viewed by the user.

  (7) The conversion unit further converts the first content to be converted, which is determined based on user preference information or a user's content viewing history, into the second content, and the second content. May be stored in the storage device.

  According to this configuration, the first content can be converted into the second content in advance based on the user's preference or viewing history. Thereby, it is possible to create in advance a file for a terminal device that is considered to be viewed by mobile, taking into account the user's preference and viewing tendency.

  (8) In addition, when the conversion unit receives the transmission request and the terminal device file stored in the storage device includes the second content corresponding to a part of the program, the conversion unit The first content corresponding to the other part is converted into the second content, and the transmission unit converts the second content corresponding to a part of the program in the terminal device file stored in the storage device. If included, a part of the second content included in the terminal device file is streamed to the terminal device, and the other part of the second content converted by the conversion unit is streamed to the terminal device. May be.

  According to this configuration, even when the user views only a part of the second content, the conversion process by the conversion unit can be omitted for a part of the second content. Thereby, it is possible to prevent the processing load of the video processing apparatus from increasing.

  (9) A video processing method according to another embodiment of the present invention converts the first content encoded by the first method received by streaming into the second content encoded by the second method, and a terminal device. A video processing method for streaming transmission for streaming playback in a network, wherein the second content transmission request is received from the terminal device, and the file for the terminal device including the second content is not stored in the storage device In this case, the step of converting the first content into the second content and storing the terminal device file including the second content in the storage device, and the converted second content in the terminal device. Transmitting the streaming, and in the streaming transmitting step, the terminal device file is stored in the storage device. When stored, the streaming transmission of the second content included in the terminal device file to the terminal device.

  This configuration includes each processing unit included in the above-described video processing device as a step. For this reason, the same operation and effect as the above-mentioned video processing device can be produced.

  (10) A video processing program according to another embodiment of the present invention converts a first content encoded by the first method received by streaming into a second content encoded by the second method, and a terminal device. A video processing program for causing a computer to function as a video processing device that performs streaming transmission for streaming reproduction in the computer, wherein the computer receives a transmission request for the second content from the terminal device, and stores the request in the storage device Conversion for converting the first content into the second content and storing the terminal device file including the second content in the storage device when the terminal device file including the second content is not stored. And transmission for streaming transmission of the second content converted by the conversion unit to the terminal device To function as the transmitting unit, when the terminal device file is stored in the storage device, the streaming transmission of the second content included in the terminal device file to the terminal device.

  According to this configuration, the computer can function as the above-described video processing apparatus. For this reason, the same operation and effect as the above-mentioned video processing device can be produced.

[Details of the embodiment of the present invention]
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. Each of the embodiments described below shows a preferred specific example of the present invention. The numerical values, the constituent elements, the arrangement positions and connection forms of the constituent elements, the steps, the order of the steps, and the like shown in the following embodiments are merely examples, and are not intended to limit the present invention. The invention is specified by the claims. Therefore, among the constituent elements in the following embodiments, constituent elements that are not described in the independent claims indicating the highest concept of the present invention are not necessarily required to achieve the object of the present invention. It will be described as constituting a preferred form.

[Overall configuration of video processing system]
FIG. 1 is a diagram illustrating a configuration of a video processing system.
The video processing system 1 is a system for viewing video content such as a television program, and includes a video processing device 10 and a terminal device 30.

  The video processing apparatus 10 is an apparatus that is installed in the house 2, receives video content such as a TV program through streaming via the Internet, a cable, or a broadcast wave, and records the video content. The video processing device 10 is configured by, for example, an STB or a recording device. Also, the video processing device 10 converts the video content into another video content encoded by a different encoding method from the encoding method of the video content, and the other video content is converted by the terminal device 30. Streaming transmission is performed to the terminal device 30 for streaming reproduction.

  The terminal device 30 is a device that is connected to the video processing device 10 in a wired or wireless manner, and that performs streaming playback of the other video content received and converted by the video processing device 10. The terminal device 30 is configured by, for example, a smart phone or a tablet terminal carried by the user.

  The video processing device 10 and the terminal device 30 are connected in accordance with, for example, a DLNA (Digital Living Network Alliance) (registered trademark) standard via a wireless LAN, and the video processing device 10 functions as a DMS (digital media server). The terminal device 30 functions as a DMP (digital media player).

  The video processing device 10 executes transcoding for converting the video content into video content for the terminal device 30. For example, the video processing device 10 creates video content in a format that can be played back by the terminal device 30 by changing the video encoding method.

  Further, when the video processing apparatus 10 performs streaming transmission of the transcoded video content to the terminal apparatus 30, the packet that can be decoded by the terminal apparatus 30 according to DTCP-IP (Digital Transmission Content Protection-Internet Protocol). Encrypt to

  The terminal device 30 receives the stream from the video processing device 10, decodes the received stream, and reproduces the video content included in the stream.

  Note that the user can also take the terminal device 30 out of the house 2. In that case, the video processing device 10 and the terminal device 30 are connected by wire and wireless via the Internet 40 and the wireless base station 41. The terminal device 30 reproduces the video content by decrypting the encrypted stream received from the video processing device 10 as when the terminal device 30 is in the house 2.

[Configuration of Video Processing Device 10]
FIG. 2 is a block diagram illustrating a configuration of the video processing apparatus 10.
The video processing apparatus 10 includes a streaming reception unit 11, a transcoding unit 12, a storage device 14, a streaming transmission unit 15, a request reception unit 16, and a file deletion unit 17.

  The streaming receiving unit 11 receives a stream including video content such as a television program via the Internet, a cable, or a broadcast wave. The stream received by the streaming receiving unit 11 is, for example, a stream according to the MPEG-2 TS (Moving Picture Experts Group 2 Transport Stream) standard, and is a stream obtained by dividing video content into a plurality of packets.

  The streaming receiving unit 11 writes the video content included in the stream received by streaming in the storage device 14 in a file format.

  The transcoding unit 12 constitutes a conversion unit, and converts the video content included in the stream received by the streaming reception unit 11 into a video content having another format, another screen resolution, or another bit rate. For example, the transcoding unit 12 uses H.264 as a video encoding method. H.264 / AVC (Advanced Video Coding) -encoded video content having a screen resolution of 1920 × 1080 and a high-bit-rate video content encoded by MPEG-2 that can be played back by the terminal device 30 is 720 × 480. Convert to low bit rate video content. The transcoding unit 12 includes a high-resolution processing unit, and converts low-bit-rate video content (for example, video content with a screen resolution of 2K) into high-bit-rate video content (for example, video content with a screen resolution of 4K). ).

  The transcoding unit 12 writes the converted video content in the storage device 14 in a file format.

  The storage device 14 is a device that stores video content files, and is configured by, for example, an HDD or an SSD (Solid State Drive).

  The request receiving unit 16 receives a transmission request for video content from the terminal device 30. That is, when the user operates the terminal device 30 to instruct the reproduction of the video content of the currently broadcast program or the video content of the program recorded in the storage device 14, the terminal device 30 instructs the video processing device 10. On the other hand, a transmission request signal for video content of a desired program is transmitted. The request reception unit 16 receives a transmission request for video content by receiving a transmission request signal transmitted from the terminal device 30.

  The request receiving unit 16 also receives a video content move request (a request to write video content to a recording medium such as an SD card) from the user. For example, when a user operates a user interface unit such as a remote controller of the video processing apparatus 10 to instruct a move request for video content, the request reception unit 16 receives a move request signal from the user interface unit. The video content move request is accepted.

  When the request receiving unit 16 receives a video content transmission request signal from the terminal device 30, the transcoding unit 12 is a video content file for the terminal device 30 of the program indicated in the transmission request signal, that is, transcoded. It is determined whether or not a video content file (hereinafter referred to as a “terminal device file”) is stored in the storage device 14. The transcoding unit 12 does not execute transcoding when the terminal device file is stored in the storage device 14, and executes transcoding when the file is not stored.

  Note that the transcoding unit 12 executes the same processing as when the request receiving unit 16 receives a video content transmission request signal even when the request receiving unit 16 receives a video content move request signal.

  The transcoding unit 12 executes transcoding not only when the request receiving unit 16 receives a transmission request signal or a move request signal, but also based on a conversion instruction from the user. For example, the transcoding unit 12 executes reserved transcoding in which video content reserved in advance by the user is transcoded in an idle time during which the video processing apparatus 10 does not perform stream transmission / reception or transcoding.

  When the request receiving unit 16 receives the video content transmission request signal from the terminal device 30, the streaming transmission unit 15 determines whether the terminal device file of the program indicated in the transmission request signal is stored in the storage device 14. Judging. When a desired terminal device file is stored in the storage device 14, the streaming transmission unit 15 performs streaming transmission of the video content included in the file to the terminal device 30.

  When the request receiving unit 16 receives the video content move request signal, the writing unit 13 determines whether or not the terminal device file of the program indicated in the transmission request signal is stored in the storage device 14. When a desired terminal device file is stored in the storage device 14, the writing unit 13 writes the file on a recording medium such as an SD memory card.

  The file deletion unit 17 constitutes a deletion unit, and deletes the terminal device file stored in the storage device 14 according to a predetermined rule. For example, when the remaining storage capacity of the storage device 14 is low, the file deletion unit 17 creates a terminal device file created according to a video content transmission request from the terminal device 30 as a reserved transcode or the like. The file is deleted with priority over the file for the terminal device created based on the conversion instruction.

The storage device 14 stores a management file indicating video content information.
FIG. 3 is a diagram illustrating an example of the management file stored in the storage device 14.
The management file stores information such as content ID, program title, file name, recording mode, and temporary flag for each video content.
The content ID indicates identification information for identifying video content.

  The program title indicates the program name of the video content. For example, the program titles of the video contents with content IDs C2 and C3 (hereinafter referred to as “video contents C2, C3”, etc.) are the same B. Therefore, the video contents C2 and C3 are different video contents for the same program.

  The file name indicates the file name of the video content file stored in the storage device 14.

  The recording mode includes DR and mobile. The video content with the recording mode DR indicates video content before transcoding, and the video content with the recording mode mobile indicates video content after transcoding. That is, the video content in the recording mode “DR” indicates the video content streamed by the streaming receiving unit 11, and the video content in the recording mode “mobile” indicates the video content streamed by the streaming receiving unit 11 as the transcoding unit 12. Shows the video content after transcoding.

  The temporary flag includes 1 and 0. Video content with a temporary flag of 1 indicates video content to be deleted by the file deletion unit 17, and video content with a temporary flag of 0 indicates video content not to be deleted by the file deletion unit 17. That is, 1 is set as the value of the temporary flag for the video content of the file for the terminal device created in accordance with the video content transmission request from the terminal device 30, and 0 as the value of the temporary flag for the other video content. Is set.

[Processing Procedure of Video Processing Device 10]
4 and 5 are flowcharts showing an example of the processing procedure of the video processing apparatus 10.

  The streaming receiving unit 11 determines whether or not the current time is included in the time slot when the program recording reservation is made (S1). If the current time is included in the time slot reserved for recording (YES in S1), a stream including the video content of the program reserved for recording is streamed (S2). The video content received by the streaming receiving unit 11 is hereinafter referred to as first content.

  The streaming receiving unit 11 stores the received first content in the storage device 14 in a file format (S3).

  In addition, the streaming receiving unit 11 updates the management file by adding the received information on the first content to the management file stored in the storage device 14 (S4). For example, it is assumed that the streaming receiving unit 11 receives the first content of the program title “A” and writes the first content in the storage device 14. In this case, data as shown in the row of the content ID “C1” is added to the management file of FIG. In this case, the recording mode of the video content C1 is DR, and the temporary flag is 0.

  The request receiving unit 16 determines whether or not a video content transmission request signal has been received from the terminal device 30 (S5). For example, it is assumed that the user operates the terminal device 30 to request viewing of the program “B”. In this case, the transmission request signal of the video content of the program “B” is transmitted from the terminal device 30 to the video processing device 10, and the request reception unit 16 receives the transmission request signal.

  When the request reception unit 16 receives the transmission request signal (YES in S5), the streaming transmission unit 15 determines whether or not the terminal device file of the program indicated in the transmission request signal is stored in the storage device 14 ( S6). In other words, the streaming transmission unit 15 determines whether or not the terminal device file is stored in the storage device 14 by referring to the management file. The terminal device file is a file whose recording mode is “mobile”. For example, referring to FIG. 3, for the program “A”, the streaming transmission unit 15 determines that the file for the terminal device is not stored in the storage device 14 because there is no file whose recording mode is “mobile”. To do. On the other hand, since the file “B2.xxx” with the recording mode “mobile” is stored in the storage device 14 for the program “B”, the streaming transmission unit 15 stores the file for the terminal device in the storage device 14. Judge that Note that the transcoding unit 12 also performs the same determination process.

  When the desired terminal device file is stored in the storage device 14 (YES in S6), the streaming transmitting unit 15 transmits video content for the terminal device 30 (hereinafter referred to as “terminal device 30”) included in the terminal device file from the storage device 14. , Referred to as “second content”) (S7).

  The streaming transmission unit 15 performs streaming transmission of the stream including the read second content (S8).

  If the desired terminal device file is not stored in the storage device 14 (NO in S6), the transcoding unit 12 transcodes the first content into the second content (S9). For example, when the transmission request signal of the video content of the program “A” is received, the transcoding unit 12 outputs the video content C1 that is the first content in the video encoding method that can be played back by the video processing device 10. Transcode to content (second content).

  The transcoding unit 12 writes the video content generated by the transcoding as a terminal device file in the storage device 14 (S10).

  The transcoding unit 12 updates the management file by adding the information of the video content generated by the transcoding to the management file stored in the storage device 14 (S11). For example, if the video content after transcoding the video content C2 is the video content C3, as shown in FIG. 3, the transcoding unit 12 stores data as shown in the row of the content ID “C3” in the management file. to add. The video content C3 is a video content created based on the transmission request signal. For this reason, “1” is set in the temporary flag so as to be a deletion target when the storage capacity of the storage device 14 decreases.

  Thereafter, the streaming transmission unit 15 performs streaming transmission of a stream including the second content (video content C3) transcoded by the transcoding unit 12.

  The transcoding unit 12 determines whether or not transcoding of video content is reserved (S12). For example, when a user operates a remote controller or the like to select video content desired to be transcoded from video content stored in the storage device 14, transcode reservation is performed. Whether or not a transcode reservation has been made is determined, for example, by providing a reserved transcode flag field in the management file shown in FIG. 3 and setting a flag in that field (setting a predetermined value). Also good.

  If the transcoding of the video content is reserved in advance (YES in S12), the transcoding unit 12 determines whether or not it is currently possible to transcode (S13). That is, the transcoding unit 12 determines whether or not it is a time zone when the processing load on the video processing device 10 is small. For example, when the streaming receiving unit 11 does not receive streaming, the transcoding unit 12 does not execute transcoding, and the streaming transmitting unit 15 does not perform streaming transmission, the video processing device 10 The processing load is small. For this reason, the transcoding unit 12 determines that it is currently a time zone in which transcoding is possible. On the other hand, if any one of the streaming receiving unit 11, the transcoding unit 12, and the streaming transmitting unit 15 is executing processing, the processing load on the video processing device 10 is heavy. Judge that it is not possible.

  If the current time is a transcoding time zone (YES in S13), the transcoding unit 12 transcodes the first content reserved for transcoding to the second content (S14). However, when the terminal device file including the second content is already stored in the storage device 14, the transcoding unit 12 may not execute the transcoding from the first content to the second content. . The determination as to whether or not the terminal device file including the second content is stored in the storage device 14 can be made in the same manner as in step S6.

  The transcoding unit 12 stores the video content generated by transcoding in the storage device 14 as a terminal device file (S15).

  The transcoding unit 12 updates the management file by adding the video content information transcoded by the transcoding unit 12 to the management file stored in the storage device 14 (S16). For example, if the video content after transcoding the video content C4 is the video content C5, as shown in FIG. 3, the transcoding unit 12 stores the data shown in the row of the content ID “C5” in the management file. to add. The video content C5 is video content for which transcoding is reserved based on a user instruction. For this reason, the video content C5 is highly likely to be played back by the terminal device 30 in the future. Therefore, “0” is set in the temporary flag of the video content C5. Thereby, when the storage capacity of the storage device 14 is reduced, it can be prevented that the storage device 14 is deleted.

  Referring to FIG. 5, transcoding unit 12 determines whether or not a move request for writing video content stored in storage device 14 to a recording medium such as an SD card is performed by a user operating a remote controller or the like. Is determined (S17).

  If a move request is made by the user (YES in S17), the writing unit 13 determines whether or not the terminal device file of the program indicated in the move request signal is stored in the storage device 14 (S18). ).

  If the desired terminal device file is stored in the storage device 14 (YES in S18), the writing unit 13 reads the terminal device file from the storage device 14 (S19).

  The writing unit 13 writes the read terminal device file on the recording medium (S20). Instead of the writing unit 13 writing the file on the recording medium, a file transmission unit (not shown) of the video processing device 10 may transmit the terminal device file to the terminal device 30.

  If the desired file for the terminal device is not stored in the storage device 14 (NO in S18), the transcoding unit 12 transcodes the first content into the second content (S21). For example, when the move request signal for the video content of the program “A” is received, the transcoding unit 12 uses the video encoding method video that can be played back by the video processing device 10 as the video content C1 as the first content. Transcode to content (second content).

  The transcoding unit 12 writes the video content generated by the transcoding as a terminal device file in the storage device 14 (S22).

  The transcoding unit 12 updates the management file by adding the information of the video content generated by the transcoding to the management file stored in the storage device 14 (S23). An example of updating the management file is the same as in step S11.

  Thereafter, the writing unit 13 writes the video content (second content) transcoded by the transcoding unit 12 in the storage device 14 as a terminal device file (S20). Instead of the writing unit 13 writing the file on the recording medium, a file transmission unit (not shown) of the video processing device 10 may transmit the terminal device file to the terminal device 30.

  The file deletion unit 17 determines whether or not the remaining storage capacity of the storage device 14 is less than a predetermined threshold TH (S24).

  If the remaining storage capacity is less than the threshold value TH (YES in S24), the file deletion unit 17 refers to the management file stored in the storage device 14 to determine whether there is a terminal device file to be deleted. Is determined (S25). That is, the file deletion unit 17 checks whether there is video content for which “1” is set in the temporary flag column of the management file. If there is video content for which “1” is set in the temporary flag column, the file deletion unit 17 determines that the terminal device file to be deleted exists, and if all the temporary flag columns are “0”. The terminal device file to be deleted does not exist.

  If there is a terminal device file to be deleted (YES in S25), the file deleting unit 17 deletes the terminal device file to be deleted from the storage device 14 (S26). That is, the file deletion unit 17 specifies the file name of the video content in which “1” is set in the temporary flag column from the management file, and deletes the file for the terminal device with the file name from the storage device 14. In the example of the management file shown in FIG. 3, the file deletion unit 17 uses the file name B2. xxx terminal file and video content C7 file name D2. The file for terminal device xxx is deleted from the storage device 14.

  However, even if the file for the terminal device with the temporary flag “1” is deleted, if the remaining storage capacity of the storage device 14 does not exceed the threshold value TH, the file deletion unit 17 sets the temporary flag to “0” and records. A file for a terminal device whose mode is “mobile” may be deleted. For example, the file deletion unit 17 sets the file name C2. The file for terminal device of xxx is deleted. This file is a file created based on a transcoding instruction by a user such as a reserved transcoding.

[Effects of the embodiment, etc.]
As described above, according to the present embodiment, when a viewing request for a program is made by a user who uses the terminal device 30, the terminal device 30 requests the video processing device 10 to transmit the second content of the program. A signal is transmitted. If the transmission request related to the program is the first time, the transcoding unit 12 converts the first content into the second content, and writes the converted second content in the storage device as a file for the terminal device. For this reason, when the user makes a request to view the second content of the same program again, the transcoding unit 12 does not need to execute the transcoding process. Therefore, remote viewing on the terminal device 30 can be realized with a lower processing load on the video processing device 10 than in the past. Also, the transcoding process is executed for the content requested to be viewed, and the converted second content is stored in the storage device 14 as a terminal device file. For this reason, the storage capacity of the storage device 14 is less likely to be insufficient than when transcoding processing and storage processing in the storage device 14 are performed each time the first content is recorded.

  Further, the content whose management file recording mode is “DR” indicates that the content is the first content that the streaming receiving unit 11 has received. In addition, the content whose management file recording mode is “mobile” is the second content generated by the conversion in the transcoding unit 12. For this reason, the content type can be managed by the management file without having the recording mode information in the content header or the like.

  If the remote viewing of the second content has already been performed when the transcoding unit 12 performs the reserved transcoding, the terminal device file is stored in the storage device 14. For this reason, in such a case, the transcoding unit 12 can be omitted without performing the transcoding process. Thereby, it is possible to prevent the processing load of the video processing device 10 from increasing.

  If remote viewing of the second content has already been performed and the file for the terminal device is stored in the storage device 14, the writing unit 13 stores the terminal device stored in the storage device 14 when the move process is executed. Write the file to the recording medium. As a result, the transcoding unit 12 can be omitted without performing the transcoding process. Therefore, it is possible to prevent the processing load of the video processing device 10 from increasing.

  In addition, the file deletion unit 17 deletes the terminal device file when the remaining storage capacity of the storage device 14 is less than the threshold value TH. For this reason, it is possible to prevent a situation in which the free capacity of the storage device 14 is insufficient and new content cannot be recorded.

  Further, the file deletion unit 17 can delete the terminal device file created during remote viewing on the terminal device 30 in preference to the terminal device file created based on the user's conversion instruction. Since the latter terminal device file is created based on the user's instruction, the user is highly likely to view the file. On the other hand, the former terminal device file has already been viewed by the user. Compared with, the possibility of viewing is low. As a result, it is possible to preferentially delete the terminal device file that is considered to be less likely to be watched while leaving the terminal device file that is likely to be viewed by the user.

[Appendix]
The video processing system 1 according to the embodiment of the present invention has been described above, but the present invention is not limited to this embodiment.
(Modification 1)

For example, in the above-described embodiment, the transcoding unit 12 performs the reserved transcoding of the video content reserved in advance by the user. You may determine based on a user's preference information or viewing history of a user's content. For example, when it is found that the user likes sports from the user's preference information, the transcoding unit 12 may set the video content of the sports program as a target of reserved transcoding. Further, when it is found from the content viewing history that the user is remotely viewing a specific drama, the video content of the drama may be subject to reserved transcoding. Thereby, it is possible to create in advance a file for a terminal device that is considered to be viewed by mobile, taking into account the user's preference and viewing tendency.
(Modification 2)

  Depending on the user, for example, there is a case where the first half of the video content is viewed and the second half is not viewed. In such a case, there are cases where the latter half of the part that has not been viewed is viewed or viewed again from the beginning.

  When the user remotely views the first half of the program and does not remotely view the second half, the transcoding unit 12 transcodes only the first half of the first content of the program and includes the second content of the first half of the program. The terminal device file is written into the storage device 14. In such a case, when the request reception unit 16 receives a transmission request for the second content of the same program from the terminal device 30, the streaming transmission unit 15 is included in the terminal device file stored in the storage device 14. The first half of the second content is stream-transmitted, and then the transcoding unit 12 transcodes the second half of the first content that is not transcoded, thereby generating the second half of the second content. The streaming transmission unit 15 performs streaming transmission of the latter half of the second content generated by the transcoding unit 12.

  According to the second modification, even when the user views only a part of the second content, the transcoding process by the transcoding unit 12 can be omitted for the part. Thereby, it is possible to prevent the processing load of the video processing device 10 from increasing.

  The video processing apparatus 10 may be specifically configured as a computer system including a microprocessor, ROM, RAM, hard disk drive, display unit, keyboard, mouse, and the like. A computer program is stored in the RAM or hard disk drive. The video processing apparatus 10 achieves its functions by the microprocessor operating according to the computer program. Here, the computer program is configured by combining a plurality of instruction codes indicating instructions for the computer in order to achieve a predetermined function.

  Furthermore, some or all of the constituent elements constituting the video processing apparatus 10 may be configured by a single system LSI. The system LSI is an ultra-multifunctional LSI manufactured by integrating a plurality of components on a single chip, and specifically, a computer system including a microprocessor, ROM, RAM, and the like. . A computer program is stored in the RAM. The system LSI achieves its functions by the microprocessor operating according to the computer program.

  Further, the present invention may be the method described above. Further, the present invention may be a computer program that realizes these methods by a computer, or may be a digital signal composed of the computer program.

  Furthermore, the present invention may be the computer program or the digital signal recorded on a computer-readable non-transitory recording medium, such as a hard disk drive, CD-ROM, or semiconductor memory. Further, the digital signal may be recorded on these non-temporary recording media.

  In the present invention, the computer program or the digital signal may be transmitted via an electric communication line, a wireless or wired communication line, a network represented by the Internet, a data broadcast, or the like.

Each step included in the program may be executed by a plurality of computers.
Furthermore, the above embodiment and the above modification examples may be combined.

  The embodiment disclosed this time should be considered as illustrative in all points and not restrictive. The scope of the present invention is defined by the terms of the claims, rather than the meanings described above, and is intended to include any modifications within the scope and meaning equivalent to the terms of the claims.

DESCRIPTION OF SYMBOLS 1 Video processing system 10 Video processing apparatus 11 Streaming reception part 12 Transcoding part 13 Writing part 14 Storage device 15 Streaming transmission part 16 Request reception part 17 File deletion part 30 Terminal device

Claims (10)

A video processing device that converts the first content encoded by the first method received by streaming into the second content encoded by the second method, and performs streaming transmission for streaming reproduction on the terminal device,
When receiving a transmission request for the second content from the terminal device and a file for the terminal device including the second content is not stored in the storage device, the first content is converted into the second content, A conversion unit for storing the file for the terminal device including the second content in the storage device;
A transmission unit for streaming transmission of the second content converted by the conversion unit to the terminal device;
When the terminal device file is stored in the storage device, the transmission unit performs streaming transmission of the second content included in the terminal device file to the terminal device. The conversion unit, for each program, based on a management file indicating whether or not the terminal device file including the second content for the program is stored in the storage device, The video processing apparatus according to claim 1, wherein it is determined whether or not conversion to the second content is necessary. When the conversion unit executes the conversion for a program for which conversion from the first content to the second content is reserved in advance, the terminal device file including the second content for the program is The video processing apparatus according to claim 1, wherein the necessity of the conversion is determined according to whether or not the data is stored in a storage device. And a writing unit for writing the second content converted by the conversion unit to a recording medium,
The writing unit writes the terminal device file into the recording medium when the terminal device file including the second content is stored in the storage device. The video processing apparatus according to item 1. The video processing device according to claim 1, further comprising a deletion unit that deletes the terminal device file stored in the storage device according to a predetermined rule. The deletion unit includes the second content created based on a conversion instruction by the user from the first content to the second content for the terminal device file including the second content created based on the transmission request. The video processing device according to claim 5, wherein the video processing device is deleted in preference to a file for a terminal device including The conversion unit further converts the first content to be converted, which is determined based on the user preference information or the viewing history of the user content, into the second content, and for the terminal device including the second content The video processing device according to claim 1, wherein a file is stored in the storage device. The conversion unit corresponds to the other part of the program when receiving the transmission request and the terminal device file stored in the storage device includes the second content corresponding to a part of the program Converting the first content to the second content,
When the terminal device file stored in the storage device includes the second content corresponding to a part of a program, the transmission unit includes the second content included in the terminal device file. The video processing apparatus according to any one of claims 1 to 7, wherein the video processing apparatus performs streaming transmission of a part to the terminal apparatus and performs streaming transmission of the other part of the second content converted by the conversion unit to the terminal apparatus. A video processing method for converting the first content encoded by the first method received by streaming into the second content encoded by the second method, and performing streaming transmission for streaming reproduction on the terminal device,
When receiving a transmission request for the second content from the terminal device and a file for the terminal device including the second content is not stored in the storage device, the first content is converted into the second content, Storing the terminal device file including the second content in the storage device;
Streaming the converted second content to the terminal device,
In the streaming transmission step, when the terminal device file is stored in the storage device, the second content included in the terminal device file is streaming transmitted to the terminal device. The computer functions as a video processing apparatus that converts the first content encoded by the first method received by streaming into the second content encoded by the second method and performs streaming transmission for streaming playback on the terminal device. A video processing program for
The computer,
When receiving a transmission request for the second content from the terminal device and a file for the terminal device including the second content is not stored in the storage device, the first content is converted into the second content, A conversion unit for storing the file for the terminal device including the second content in the storage device;
Causing the second content converted by the conversion unit to function as a transmission unit for streaming transmission to the terminal device;
When the terminal device file is stored in the storage device, the transmission unit performs streaming transmission of the second content included in the terminal device file to the terminal device.