JP5185467B1 - Video playback apparatus and video playback method - Google Patents

Abstract

An image quality process suitable for video quality at the time of displaying a video of a content file can be performed at low cost.
According to one embodiment, a video reproduction apparatus includes a reading unit that reads a content file stored in a storage unit, a selection unit that selects a content file to be reproduced from the read content file, and a selection of the selected content file. Image quality processing means for performing predetermined image quality processing on the video, and image quality control means for performing image quality processing with a parameter corresponding to the predetermined name if the name for specifying the selected content file includes a predetermined name With.
[Selection] Figure 3

Description

  Embodiments described herein relate generally to a video playback apparatus and a video playback method.

  2. Description of the Related Art Conventionally, a video playback device such as a liquid crystal television reads a content file stored in a storage medium such as an HDD (Hard Disk Drive) or a flash memory, and the content (program) video stored in the read content file. There is something that displays.

JP 2006-108843 A

  By the way, the content of the content file stored in the above-described storage medium includes content having different video statuses (video quality) such as high-resolution content and low-resolution content. For image quality processing for improving image quality such as noise removal performed when displaying content video, it is preferable to adjust parameters relating to the image quality processing in accordance with the status of the video. Therefore, when reading the content file stored in the storage medium and displaying the video, in order to perform the image quality processing suitable for the video quality, a configuration for analyzing the read video and confirming the video quality is separately provided. It was necessary to prepare and was expensive. In addition, when a video is analyzed by software to check the video quality, the load is high.

  The present invention has been made in view of the above, and a video playback apparatus and video capable of performing image quality processing suitable for video quality at low cost and low load when displaying video of a content file An object is to provide a reproduction method.

In order to solve the above-described problems and achieve the object, the video reproduction apparatus of the embodiment selects a reading unit that reads a content file stored in a storage unit, and selects a content file to be played from the read content file Selection means, image quality processing means for performing a predetermined image quality process on the video of the selected content file, and a name for specifying the selected content file, when the predetermined name is included, the predetermined name Image quality control means for performing the image quality processing with parameters corresponding to the image quality control means, for each of the predetermined names, with reference to setting data in which parameters for the image quality processing are preset, The image with a parameter corresponding to a predetermined name included in the name for specifying the selected content file. The image quality processing is processing for removing noise included in the video, and the image quality control means corresponds to a predetermined name included in a name for specifying the selected content file. The noise included in the video is removed with the strength indicated by the parameter.
In addition, the video reproduction apparatus according to the embodiment specifies a reading unit that reads a content file stored in a storage unit, an image quality processing unit that performs predetermined processing on the video of the read content file, and specifies the read content file Control means for performing the processing with a parameter corresponding to the predetermined character when a predetermined character is included in the name for the purpose.

  The video playback method according to the embodiment is a video playback method of a video playback device, in which the reading unit reads the content file stored in the storage unit, and the image quality processing unit stores the video of the read content file. Performing a predetermined process on the control unit, and when the control unit includes a predetermined character in a name for specifying the read content file, the process is performed with a parameter corresponding to the predetermined character. And including.

FIG. 1 is a block diagram illustrating a configuration of a video reproduction apparatus according to the embodiment. FIG. 2 is a diagram illustrating an arrangement example of operation buttons of the remote controller. FIG. 3 is a flowchart illustrating an example of the operation of the video reproduction apparatus according to the embodiment. FIG. 4 is a conceptual diagram illustrating a stored content file. FIG. 5 is a conceptual diagram illustrating content files stored in a folder.

  Hereinafter, a video playback apparatus and a video playback method according to embodiments will be described in detail with reference to the accompanying drawings. In the present embodiment, a general television is exemplified as a video playback device. However, it goes without saying that a device such as a hard disk recorder or a set top box having a tuner for receiving broadcast waves may be used.

  FIG. 1 is a block diagram illustrating a configuration of a video reproduction device 1 according to the embodiment. As shown in FIG. 1, a video playback apparatus 1 is a television equipped with a digital / analog broadcast receiving tuner, and includes an antenna 2, a tuner 3, a signal processing unit 4, a video processing unit 5, a display processing unit 6, Display display unit 7, audio processing unit 8, speaker 9, control unit 10, communication line 11, RAM 12 (Random Access Memory), ROM 13 (Read Only Memory), keyboard 14, light receiving unit 15, input / output unit 16, and communication unit 17 It is configured with.

  The antenna 2 receives digital broadcast / analog broadcast such as BS, CS, and terrestrial waves. The tuner 3 selects a viewing channel designated by the user. Under the control of the control unit 10, the signal processing unit 4 extracts and processes the signal demodulated by the tuner 3 and the signal input from the input / output unit 16 as various digital signals. Note that analog broadcasting is A / D converted by the signal processing unit 4 and processed as a digital signal. The signal processing unit 4 separates the input signal into a video signal and an audio signal, and outputs the video signal to the video processing unit 5 and the audio signal to the audio processing unit 8.

  The video processing unit 5 adjusts the video signal input from the signal processing unit 4 to a correct screen size, and further performs various video processing. Various video processes performed by the video processing unit 5 include a process of removing noise included in the video signal as an image quality process for improving the image quality of the video. Specifically, there is a process of removing analog noise included in video in analog broadcasting, and a process of removing mosquito noise and block noise included in video in digital broadcasting. The strength (parameter) of the image quality processing performed by the video processing unit 5 described above is controlled by the image quality control unit 103. Specifically, the degree of image blur due to noise removal is controlled as the strength of image quality processing.

  The display processing unit 6 further superimposes OSD (On-Screen Display) display such as character information on the adjusted video signal. The display display unit 7 displays the video signal on the screen. Then, the viewer (user) views the television image by looking at the screen of the display display unit 7. The voice processing unit 8 performs acoustic processing and amplifies the voice signal. The speaker 9 outputs an audio signal as audio. Then, the viewer listens to the television sound by listening to the sound from the speaker 9.

  The control unit 10 controls each unit of the video reproduction device 1. Specifically, the control unit 10 is a microcontroller, and develops a program stored in the ROM 13 on the RAM 12 and sequentially executes the program, thereby outputting a control signal to each unit of the video playback device 1 and the video playback device 1. Centralized control of the operation. The control unit 10 has functions as the content reading unit 101, the content selection unit 102, and the image quality control unit 103 by executing the above-described program (details will be described later).

  The communication line 11 connects the tuner 3, the signal processing unit 4, the video processing unit 5, the display processing unit 6, the audio processing unit 8, and the control unit 10, and the control unit 10, the tuner 3, and the signal processing unit 4. Data is exchanged among the video processing unit 5, the display processing unit 6, and the audio processing unit 8. Specifically, the communication line 11 may be IIC-BUS or the like. The RAM 12 and ROM 13 store various data, and these data are exchanged with the control unit 10. In particular, the ROM 13 stores setting data 131 in which programs executed by the control unit 10 and various settings are described.

  Here, the various settings described in the setting data 131 include, for each predetermined name included in the file name of the content file 211, the strength (parameters) of image quality processing performed by the video processing unit 5 corresponding to the name. ) For setting values. For example, for each name such as “special” and “normal”, an image processing parameter corresponding to the name is described.

  The keyboard 14 is a switch that receives an operation instruction from the viewer. The light receiving unit 15 receives a signal transmitted by the remote controller 40 that has accepted the operation instruction of the viewer. The viewer can operate the video playback device 1 and each device connected to the video playback device 1 by operating various buttons on the remote controller 40. The keyboard 14 and the remote controller 40 described above are the operation means of the video playback device 1.

  Here, the details of the operation means will be described using the remote controller 40 as an example. FIG. 2 is a diagram illustrating an arrangement example of operation buttons of the remote controller 40.

  As shown in FIG. 2, the signal processing unit 4 is provided with various buttons for operating the video playback device 1 and each device connected to the video playback device 1. The number button 410 is a button for the viewer to input a number when inputting a channel number or selecting the number of a connected device at the time of an input switching operation for switching a device for performing an operation input.

  The channel up button 413 and the channel down button 414 are buttons for the viewer to perform an operation for changing the channel in ascending order or descending order. The volume up button 415 and the volume down button 416 are buttons for the viewer to perform an operation for increasing or decreasing the volume of the audio output. The menu button 417 is a button operated by the viewer when displaying a menu such as a setting operation of the video playback device 1 and starting the setting operation. The selection button 418 is a button for the viewer to make a selection instruction.

  The power button 419 is a button for the viewer to turn on / off the power of the video playback device 1. The input switching button 420 is a button operated by the viewer when starting the input switching operation. An up button 421, a down button 422, a left button 423, and a right button 424 are buttons for a viewer to perform menu display during a setting operation and an operation for changing the cursor position. The OK button 425 is a button operated by the viewer when determining the selection content or the change content.

  The color buttons 426 (“blue”, “red”, “green”, “yellow” in the illustrated example) are buttons used by the viewer when performing operations related to digital television broadcasting of the video playback device 1. is there. The source device operation button 430 is a button used by the viewer when performing an operation (for example, playback) related to content stored in the source device (recorder 20 in the example of FIG. 1) connected to the video playback device 1. It is. In the illustrated example, there are “play”, “stop”, “fast reverse”, “fast forward”, and the like.

  The input / output unit 16 is capable of inserting / removing a media card 22 such as a high-definition multimedia interface (HDMI) to which the recorder 20 can be connected, a USB (Universal Serial Bus) communication interface to which the USB device 21 can be connected, and a flash memory. Card slot. The communication unit 17 is a communication interface that performs data communication with a communication network such as the Internet 23 under the control of the control unit 10.

  The input / output unit 16 receives digital video input from the HDMI-compatible recorder 20 connected via HDMI under the control of the control unit 10. The input / output unit 16 reads / writes data from / to the recorder 20 connected via the USB cable and the media card 22 inserted into the card slot. As a result, the content file 211 stored in the USB device 21 as the storage unit is read.

  The content file 211 is a file in which content data such as video displayed on the display display unit 7 and audio output from the speaker 9 is recorded. Specifically, it is a file in which video and audio stream data is described, and is divided into files with a file name assigned to each content (program). In the present embodiment, the configuration in which the content file 211 is stored in the USB device 21 is illustrated. However, the content file 211 can be connected to an external device that can be connected via the Internet 23 in addition to the recorder 20 and the media card 22. It goes without saying that it may be stored.

  Here, in the case of setting the strength (parameter) of image quality processing corresponding to the video quality of the content, the file name of the content file 211 includes a name indicating the parameter of the image quality processing to be set. Specifically, names such as “special” and “normal” described in the setting data 131 as names for setting image quality processing parameters are included in the file name of the content file 211. . Therefore, the viewer uses the name for setting the image quality processing parameter corresponding to the video quality of the content among the names such as “special” and “normal” as the file name of the content file 211. By including it in the parameter, the parameter corresponding to the name can be reflected in the image quality processing performed by the video processing unit 5.

  Here, details of the content reading unit 101, the content selection unit 102, and the image quality control unit 103, which are functional units included in the control unit 10, will be described.

  When the USB device 21 is connected via the input / output unit 16, the content reading unit 101 reads the content file 211 stored in the connected USB device 21. The content selection unit 102 displays a selection screen for displaying the content file 211 read by the content reading unit 101 for each divided content, that is, a selection screen for selecting a content file to be reproduced from the content file 211. To display. Then, the content selection unit 102 receives selection of the content file 211 to be displayed and reproduced from the display display unit 7 based on an operation instruction from the remote controller 40.

  The image quality control unit 103 controls the strength of image quality processing performed by the video processing unit 5. Specifically, the image quality control unit 103 reads the content file 211 selected by the content selection unit 102, displays it from the display display unit 7, and reproduces the strength of the image quality processing performed by the video processing unit 5. Control is performed based on a name (file name) for specifying the content file 211. More specifically, the image quality control unit 103 includes the name in which the image quality processing parameters such as “special (special)” and “normal (standard)” are set in the setting data 131 in the file name of the content file 211. If it is, the image processing unit 5 performs image quality processing with a parameter corresponding to the name. Therefore, the video reproduction apparatus 1 includes the name for setting the strength (parameter) of the image quality processing corresponding to the video quality of the content file 211 in the file name, so that the image quality processing corresponding to the video quality is performed. Therefore, it is not necessary to separately provide a configuration for analyzing the video of the content file 211 and confirming the video quality, and image quality processing suitable for the video quality can be realized at low cost.

  Here, details of control by the above-described content reading unit 101, content selection unit 102, and image quality control unit 103 will be described in detail with reference to FIG. FIG. 3 is a flowchart illustrating an example of the operation of the video reproduction device 1 according to the embodiment.

  As shown in FIG. 3, when processing is started by turning on the power, the content reading unit 101 determines whether or not a storage medium is inserted, that is, whether or not the USB device 21 is connected to the input / output unit 16 ( S1). When the USB device 21 is connected to the input / output unit 16 (S1: YES), the content reading unit 101 reads the content file 211 stored in the USB device 21 (S2).

  FIG. 4 is a conceptual diagram illustrating the stored content file F1. As shown in FIG. 4, the USB device 21 stores content files such as content files F1, F2, and F3 under a root folder. Here, it is assumed that the content file F1 has a file name “xxx_special.mpg” and includes the name “special (special)” in which the image quality processing parameters are set in the setting data 131. The content file F2 has a file name “YYY.mpg” and does not include a name in which image quality processing parameters are set in the setting data 131. In addition, the content file F3 has a file name “zzz_Hi_special.mpg”, a name of “special” in which parameters of image quality processing are set in the setting data 131, and a word (term) for adjusting the parameters ) Which is “Hi”.

  The terms for adjusting the parameters include, for example, “Hi” and “Low” indicating the resolution of the video, “Analog”, “Digital”, and “Source” indicating the source of the original video (for example, analog broadcasting / digital broadcasting / net distribution). It may be “net”. The adjustment amount corresponding to the above-described term is set in the setting data 131, and the image quality control unit 103 is set in the setting data 131 based on the term included in the file name of the content file 211 to be played back. The adjustment amount is reflected in the image quality processing parameters (details will be described later).

  Next, the content selection unit 102 displays a selection screen for selecting a content file to be reproduced from the read content file 211 on the display display unit 7, and displays it from the display display unit 7 based on an operation instruction from the remote control 40. Then, selection of the content file 211 to be reproduced is accepted (S3).

  Next, the image quality control unit 103 sets a predetermined name (for example, “special”, “normal”, etc.) in which the image quality processing parameter is set in the setting data 131 to the file name of the selected content file 211. Is determined (S4). When the predetermined name is not included (S4: NO), the image quality control unit 103 sets a standard parameter preset in the ROM 13 or the like as a parameter for image quality processing performed by the video processing unit 5 (S5).

  If the predetermined name is included (S4: YES), the image quality control unit 103 reads and sets the image quality processing parameter corresponding to the name from the setting data 131 (S6). For example, in the example of FIG. 4, when the content file F1 or F3 is selected, the image quality processing parameter corresponding to “special” is set.

  Next, the image quality control unit 103 determines whether or not the above-described adjustment term is included in the file name of the selected content file 211 (S7). If an adjustment term is included, the image quality control unit 103 reads the adjustment amount corresponding to the term from the setting data 131 and adds it to the image quality processing parameters set in S6 (S8). Thus, by adding an adjustment term to the file name of the content file 211, it is possible to adjust the image quality processing parameters. For example, in the example of FIG. 4, when the content file F3 is selected, the adjustment amount when the video resolution is “Hi” is added to the image quality processing parameter corresponding to “special”. It will be.

  Since a video with high resolution is a relatively beautiful video, it may be better not to increase the degree of blurring of the video due to noise removal of the video processing unit 5. Therefore, the viewer can adjust the image quality processing parameters according to the high-resolution video by including the term “Hi” indicating that the video has a high resolution in the file name of the content file 211. Can do.

  Next, the control unit 10 reads the content file selected in S3 from the USB device 21 (S9), causes the video processing unit 5 to perform image quality processing with the set parameters (S10), and from the display display unit 7. It is displayed (S11).

  In the present embodiment, the file name is exemplified as a name for specifying the content file 211, and the image quality control unit 103 uses the image quality processing of the video processing unit 5 with parameters according to the file name of the selected content file 211. Explained the case where However, the name for specifying the content file 211 may be, for example, a folder name in addition to the file name. When the folder name of the selected content file includes a name for which a parameter for image quality processing is set in the setting data 131, the image quality control unit 103 performs the image quality processing of the video processing unit 5 with the parameter corresponding to the name. Let it be done. As a result, the viewer can store the content file 211 under a folder with a predetermined name, so that the image quality processing for the content file 211 can be performed collectively.

  FIG. 5 is a conceptual diagram illustrating content files stored in the folders F10 and F20. As shown in FIG. 5, in the USB device 21, content files F11 and F12 are stored under the folder F10, and the content file F21 is stored under the folder F20. Here, it is assumed that the folder F10 has a folder name “Special” and includes the name “special” in which the image quality processing parameters are set in the setting data 131. Further, it is assumed that the folder F20 has a folder name “normal” and includes the name “normal” for which the image quality processing parameter is set in the setting data 131. As a result, when the content files F11 and F12 are selected, the image quality processing of the video processing unit 5 can be performed with parameters corresponding to “special”.

  Note that the program executed by the video playback device 1 of the present embodiment is provided by being incorporated in advance in a ROM or the like. A program executed by the video playback device 1 of the present embodiment is a file in an installable format or an executable format, and is a computer such as a CD-ROM, a flexible disk (FD), a CD-R, or a DVD (Digital Versatile Disk). The information may be provided by being recorded on a recording medium that can be read by the user.

  Furthermore, the program executed by the video playback device 1 of the present embodiment may be provided by being stored on a computer connected to a network such as the Internet and downloaded via the network. Further, the program executed by the video playback device 1 of the present embodiment may be configured to be provided or distributed via a network such as the Internet.

  The program executed by the video reproduction apparatus 1 of the present embodiment has a module configuration including the above-described units (content reading unit 101, content selection unit 102, image quality control unit 103), and CPU as an actual hardware When the (processor) reads out the program from the ROM and executes it, the above-described units are loaded onto the main storage device and generated.

  Note that the present invention is not limited to the above-described embodiment as it is, and can be embodied by modifying the constituent elements without departing from the scope of the invention in the implementation stage. Moreover, various inventions can be formed by appropriately combining a plurality of constituent elements disclosed in the embodiment. For example, some components may be deleted from all the components shown in the embodiment. Furthermore, the constituent elements over different embodiments may be appropriately combined.

  The invention described in the scope of claims immediately before the division of the original application is added below.

(Appendix 1)
Reading means for reading the content file stored in the storage means;
Selecting means for selecting a content file to be reproduced from the read content files;
Image quality processing means for performing predetermined image quality processing on the video of the selected content file;
When a predetermined name is included in the name for specifying the selected content file, image quality control means for performing the image quality processing with a parameter corresponding to the predetermined name;
A video playback device comprising:

(Appendix 2)
For each predetermined name, the image quality control means refers to setting data in which parameters relating to the image quality processing are set in advance, and sets the predetermined name included in the name for specifying the selected content file. The image quality processing is performed with corresponding parameters.
The video reproduction apparatus according to (Appendix 1).

(Appendix 3)
When the name for specifying the selected content file includes a predetermined term for adjusting the parameter in addition to the predetermined name, the image quality control unit adjusts corresponding to the predetermined term. Adding the amount to the parameter to perform the image quality processing;
The video reproduction apparatus according to (Appendix 1) or (Appendix 2).

(Appendix 4)
The predetermined term is a term indicating a video resolution of the content file,
When the name for specifying the selected content file includes a term indicating the resolution, the image quality control means adds the adjustment amount corresponding to the resolution to the parameter to perform the image quality processing. To do,
The video reproduction device according to (Appendix 3).

(Appendix 5)
The image quality process is a process of removing noise included in the video,
The image quality control means causes noise included in the video to be removed at a strength indicated by a parameter corresponding to a predetermined name included in a name for specifying the selected content file.
The video reproduction device according to any one of (Appendix 1) to (Appendix 4).

(Appendix 6)
The name for identifying the selected content file is a file name of the content file,
The image quality control means, when a predetermined name is included in the file name of the selected content file, causes the image quality processing to be performed with a parameter corresponding to the predetermined name.
The video reproduction device according to any one of (Appendix 1) to (Appendix 5).

(Appendix 7)
The name for specifying the selected content file is the folder name of the folder in which the content file is stored,
The image quality control means, when a predetermined name is included in the folder name in which the selected content file is stored, causes the image quality processing to be performed with a parameter corresponding to the predetermined name.
The video reproduction device according to any one of (Appendix 1) to (Appendix 5).

(Appendix 8)
The storage means can be connected and disconnected via a predetermined communication path,
The reading unit reads a content file stored in the storage unit when the storage unit is connected;
The video reproduction device according to any one of (Appendix 1) to (Appendix 7).

(Appendix 9)
A video playback method for a video playback device, comprising:
A reading unit reading a content file stored in the storage unit;
A step of selecting a content file to be reproduced from the read content file;
Image quality processing means for performing predetermined image quality processing on the video of the selected content file;
A step of causing the image quality control means to perform the image quality processing with a parameter corresponding to the name when the name for identifying the selected content file is a predetermined name;
Video playback method.

  DESCRIPTION OF SYMBOLS 1 ... Video reproduction apparatus, 2 ... Antenna, 3 ... Tuner, 4 ... Signal processing part, 5 ... Video processing part, 6 ... Display processing part, 7 ... Display display part, 8 ... Audio processing part, 9 ... Speaker, 10 ... Control unit, 11 ... communication line, 12 ... RAM, 13 ... ROM, 14 ... keyboard, 15 ... light receiving unit, 16 ... input / output unit, 17 ... communication unit, 20 ... recorder, 21 ... USB device, 22 ... media card, DESCRIPTION OF SYMBOLS 23 ... Internet, 40 ... Remote control, 101 ... Content reading part, 102 ... Content selection part, 103 ... Image quality control part, 131 ... Setting data, 211 ... Content file, F1, F2, F3, F11, F12, F21 ... Content file , F10, F20 ... folder

Claims (11)

Reading means for reading the content file stored in the storage means;
Selecting means for selecting a content file to be reproduced from the read content files;
Image quality processing means for performing predetermined image quality processing on the video of the selected content file;
When a predetermined name is included in the name for specifying the selected content file, image quality control means for performing the image quality processing with a parameter corresponding to the predetermined name;
With
For each predetermined name, the image quality control means refers to setting data in which parameters relating to the image quality processing are set in advance, and sets the predetermined name included in the name for specifying the selected content file. Let the image quality processing be performed with the corresponding parameters,
The image quality process is a process of removing noise included in the video,
The video reproduction device, wherein the image quality control means removes noise included in the video with a strength indicated by a parameter corresponding to a predetermined name included in a name for specifying the selected content file. Reading means for reading the content file stored in the storage means;
Image quality processing means for performing predetermined processing on the video of the read content file;
When a predetermined character is included in the name for specifying the read content file, control means for performing the processing with a parameter corresponding to the predetermined character;
A video playback device comprising: The predetermined process is a predetermined image quality process,
The video reproduction apparatus according to claim 2. The image quality control means refers to setting data in which parameters for the image quality processing are set in advance for each predetermined character, and the predetermined character included in the name for identifying the read content file The image quality processing is performed with parameters corresponding to
The video playback device according to claim 3. The image quality control means corresponds to the predetermined term when the name for specifying the read content file includes a predetermined term for adjusting the parameter in addition to the predetermined character. Adding an adjustment amount to the parameter to perform the image quality processing;
The video reproduction device according to claim 3 or 4. The predetermined term is a term indicating a video resolution of the content file,
When the name for specifying the read content file includes a term indicating the resolution, the image quality control means adds an adjustment amount corresponding to the resolution to the parameter to perform the image quality processing. To do,
The video reproduction device according to claim 5. The image quality process is a process of removing noise included in the video,
The image quality control means causes noise included in the video to be removed at a strength indicated by a parameter corresponding to a predetermined character included in a name for specifying the read content file.
The video reproduction device according to any one of claims 3 to 6. The name for identifying the selected content file is a file name of the content file,
The image quality control means, when a predetermined character is included in the file name of the read content file, causes the image quality processing to be performed with a parameter corresponding to the predetermined character.
The video reproduction device according to any one of claims 3 to 7. The name for specifying the selected content file is the folder name of the folder in which the content file is stored,
The image quality control means, when a predetermined character is included in the folder name in which the read content file is stored, causes the image quality processing to be performed with a parameter corresponding to the predetermined character.
The video reproduction device according to any one of claims 3 to 7. The storage means can be connected and disconnected via a predetermined communication path,
The reading unit reads a content file stored in the storage unit when the storage unit is connected;
The video reproduction device according to any one of claims 3 to 9. A video playback method for a video playback device, comprising:
A reading unit reading a content file stored in the storage unit;
An image quality processing means for performing predetermined processing on the video of the read content file;
When the control means includes a predetermined character in the name for specifying the read content file, the step of performing the processing with a parameter corresponding to the predetermined character;
Video playback method.

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