KR101299501B1 - Media file format, method for playbacking media file, and apparatus for playbacking media file - Google Patents

Abstract

The present invention relates to a media file format, a media file playback method, and a media file playback apparatus that define a format of a media file such as audio media, video media, text media, multimedia, rich media, or the like, and play back a media file according to the format. According to the present invention, a media data area having animation data and image media; And a media information area including media information of the animation data and media information of the video media.

Multimedia, slide

Description

MEDIA FILE FORMAT, METHOD FOR PLAYBACKING MEDIA FILE, AND APPARATUS FOR PLAYBACKING MEDIA FILE}

1 is a schematic diagram of a media file format according to an embodiment of the present invention;

2 is a schematic diagram of a media file format according to another embodiment of the present invention.

3 is a block diagram of a media file playing apparatus according to an embodiment of the present invention.

4 is a flowchart of a metadata retrieval process of a media file playing method according to an embodiment of the present invention.

5 is a flowchart illustrating a process of playing a media file in a method of playing a media file according to an embodiment of the present invention.

DESCRIPTION OF THE REFERENCE SYMBOLS

110 210 File Information Area

120 220 Media information area

122 222 Track area of video media

124 224 Track area of animation data

226 Track Area of Audio Media

228 Track Area of Text Media

130 230 Media data area

132 232 Video media

134 234 Animation Data

236 Audio Media

238 Text Media

The present invention relates to a media file format, a media file playback method, and a media file playback device, and more particularly, to a media file format such as audio media, video media, text media, multimedia, rich media, or the like. A media file format for playing back a media file, a media file playback method, and a media file playback device.

In general, after a still image or a moving picture such as a picture is taken or produced, various kinds of animation effects may be applied to the still or moving picture. For example, the effect of gradually increasing the opacity of the photo for a predetermined time may be applied, or the effect of increasing or decreasing the height or width of the photo may be applied. The still images or videos to which the animation effect is applied are compressed according to the video compression method to become a new video file.

The generated video file includes an original still image or a screen that does not exist in the video. For example, if three still images (10-30 shots) are made by applying animation effects to two still images, the number of screens increases from two to 30-90 shots. If the capacity of one still image is about 50 Kbytes each, the data capacity of the still image is 100 Kbytes, and the script describing the animation effect is about 1 Kbytes. The data size of the video file is at least 6000 Kbytes.

As such, although the moving image file is compressed according to a conventional compression method, the data size (ie, file capacity) of the compressed moving image file is significantly increased compared to the data size of still images before the animation effect is applied. there was.

The present invention has been made to solve the above problems, and provides a media file format, a media file playback method, and a media file playback device capable of applying various animation effects to a video or still image while minimizing data capacity. Its purpose is to.

It is still another object of the present invention to provide a media file format, a media file playback method, and a media file playback apparatus capable of providing various information related to animation effects to a general user by including metadata about animation effects in a media file. It is.

In order to achieve the above object, a media file reproduction method according to the present invention comprises the steps of analyzing the media information of the animation data and the media information of the image media; And applying the animation data to the video media by using the analyzed result.

According to the present invention, the media information of the animation data may include time information.

According to the present invention, a method of playing a media file using a plurality of media files including metadata of the animation data, the method comprising: querying metadata of the plurality of animation data using a given search word; And outputting a result of the inquiry.

According to another aspect of the invention, the media information analysis unit for analyzing the media information of the animation data and the media information of the image media; And a media player for applying the animation data to the image media through the analyzed result.

According to the present invention, the media file reproducing apparatus may further include a metadata retrieval unit for retrieving metadata of a plurality of animation data through the input search word and outputting the retrieval result.

According to another aspect of the invention, the media data area having animation data and video media; And a media information area including media information of the animation data and media information of the video media.

According to the present invention, the animation data is divided into access units, and the media information of the animation data may include time information for each access unit.

According to the present invention, the time information for each access unit may include one or more of order information and period information.

According to the present invention, the video media is divided into still images, and the access unit of the animation data may include effect information and period information on one or more still images.

According to the present invention, the effect information may include one or more of grouping information, size information, opacity information, and geometric transformation information.

According to the present invention, the media file format may further include a file information area including information about the media file, and the media information area may further include metadata of the animation data and metadata of the video media. have.

According to the present invention, the media data area further includes audio media and text media, the media information area further includes media information of the audio media and media information of the text media, wherein the media information of the animation data It may further include the synchronization information for the audio media and the text media.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. Prior to this, terms and words used in the present specification and claims should not be construed as limited to ordinary or dictionary terms, and the inventor shall design the concept of the term appropriately in order to describe its own invention in the best way possible. It should be interpreted as meaning and concept consistent with the technical idea of the present invention. Therefore, the embodiments described in this specification and the configurations shown in the drawings are merely the most preferred embodiments of the present invention and do not represent all the technical ideas of the present invention. Therefore, It is to be understood that equivalents and modifications are possible.

1 is a schematic diagram of a media file format according to an embodiment of the present invention. Referring to the drawings, the media file format 100 (hereinafter, referred to as the media file format 100) according to an embodiment of the present invention may include the file information area 110, the media information area 120, and the media data area 130. Include. The media information area 120 includes a track area 122 of video media and a track area 124 of animation data, and the media data area 130 includes video media 132 and animation data 134. do.

After the file information area 110 has been described above, the video media 132 and the animation data 134 may be used before each track area (that is, the track area 122 of the video media and the track area 124 of the animation data). I will explain.

First, the file information area 110 is an area where identification information is stored so that a media file according to the media file format 100 is distinguished from a plurality of other media files. The identification information may include a format name, a version, a total data size of the media file, but the present invention is not limited thereto.

The image media 132 refers to actual data forming a still image or a moving image, and may be divided into a plurality of samples. Referring to the figure, it can be seen that the image media 132 is composed of a total of N samples from the first sample (1) to the N-th sample (N). Here, the sample is a unit used to describe the image media 132 in the track area 122 of the image media (especially, the media information region 122d of the image media), and the like. Can mean.

The animation data 134 is data about animation effects applied to the image media 132 and may be divided into a plurality of access units. Referring to the drawings, it can be seen that the animation data 134 is composed of a total of N access units from the first access unit 1 to the Nth access unit N. Here, the access unit is a unit used for describing the animation data 134 in the track area 122 of animation data (particularly, the media information area 124d of animation data).

Meanwhile, one access unit of the animation data 134 may include effect information and period information regarding one or more samples (eg, still images) of the one or more image media 132. For example, the first access unit 1 of the animation data 134 includes effect information and period information on the first sample 1 of the image media 132. The effect information may include one or more of grouping information, size information, opacity information, and geometric transformation information, but the present invention is not limited thereto. For example, if an access unit of the animation data 134 includes information about 'opacity control', it may be gradually or opaque by including whether it is 'fade-in' or 'fade-out'. It is possible to set whether or not to make it linearly, and whether or not to make it linearly transparent (or opaque) by including 'mode information' in the attribute information.

The animation data 134 is a scalable vector graphics (SVG) (hereinafter referred to as SVG), a language based on XML (eXtensible Mark-up Language), or a laser (LAS-R: Light-weigh Application) defined in MPEG4 PART 20. Scene Representation (hereinafter referred to as LASeR), in which case an identifier (eg, g, image,…, id, width, height,…) used in an SVG or a laser may be used. On the other hand, the animation data 134 may be in text form as such as SVG or LASeR language, but may be binarized.

That is, the above-described animation data 134 is a kind of script for describing animation effects for each access unit, and is included in the media data area 130 together with the image media 132.

The file information area 110, the image media 132 of the media data area 130, and the animation data 134 have been described above. Hereinafter, the image media 132 and the animation data 134 respectively correspond to the image media 132 and the animation data 134. The track area 122 of the video media of the media information area 120 and the track area 124 of the animation data will be described.

The track area 122 of the video media of the media information area 120 includes the media information 122d of the video media and the metadata 122t of the video media. 124 includes media information 124d of animation and metadata 124t of animation data. Hereinafter, the media information 122d of the video media, the metadata 122t of the video media, the media information 124d of the animation, and the metadata 124t of the animation data will be described in this order.

The media information 122d of the image media is media information about the image media 132 of the media data area 130. The media information herein may include location information and sliding information. The location information is information indicating where each sample of the image media 132 exists in the media file format 100 and may be a physical address of each sample of the image media 132. The sliding information is information used for simply sliding the image media 132 when the media file reproducing apparatus fails to decode the animation data 134, that is, when the animation effect cannot be applied to the image media 132. to be. Sliding means that the screen is switched for a predetermined time without an animation effect, and the sliding information may include order information and period information.

The metadata 122t of the image media is metadata about the image media 132 of the media data area 130. That is, all the information related to the image media 132 may be metadata 122t of the image media. The metadata herein may include video media producer information, video media production date and time, color and shape of video media, video media production episodes, and the like.

The media information 124d of the animation data is media information about the animation data 134 of the media data area 130. The media information herein may include location information and time information for each access unit of the animation data 134, and the time information may include order information and period information. The location information is information indicating where each access unit of the animation data 134 exists and may be a physical address. The order information in the time information is information for determining an order of a plurality of access units, and refers to which access unit is applied first, and the period information in the time information indicates information for which time a particular access unit is to be maintained. The decoder of the media file may determine the location of each access unit of the animation data 134 by referring to the media information 124d of the animation data, and then apply the animation effect using the access unit for a given time in a given order. have.

The metadata 124t of the animation data is metadata regarding the animation data 134 of the media data area 130. All information that may be associated with the animation data 134 may be the metadata 124t of the animation data. The metadata herein may include an animation effect name, an animation function name, an animation attribute name, an animation production date, an animation production intention, an animation production episode, and the like, but the present invention is not limited thereto. The metadata 124t of such animation data may be provided as text information for content retrieval.

The media file format 100 according to an embodiment of the present invention includes the above-described information area or information as the above structure, so that an animation effect can be applied to a still image or a video.

2 is a schematic diagram of a media file format according to another embodiment of the present invention. The media file format 200 (hereinafter, referred to as the media file format 200) according to another embodiment of the present invention may further include the audio media 236 and the text media in addition to the media file format 100 according to the embodiment of the present invention. 238 (including track areas 226 and 228 corresponding thereto).

Referring to FIG. 2, the media file format 200 includes the file information area 210, the media information area 220, and the media data area 230 similarly to the media file format 100 according to an embodiment of the present invention. Include.

On the other hand, the file information area 210, the track area 222 of the video media, the video media 232, the track area 224 of the animation data, and the animation data 234 (media information areas 222d and 224d belonging to the excitation, respectively). ) And metadata areas 222t and 224t) are the same as the areas of the same name among the areas included in the media file format 100 according to an embodiment of the present invention. However, the media information area 222d of the image media may further include synchronization information, wherein the synchronization information is information for synchronizing the image media 232, the audio media 236, and the text media 238 with each other. to be. In addition, the media file format 100 according to an exemplary embodiment of the present invention includes audio media 236, a track region 226 of audio media, an audio media 238, and a track region 228 of audio media. Will be described in the order listed.

The audio media 236 is actual data forming music or voice, and may be an audio stream decoded according to various audio compression schemes. For example, the audio media 236 may be drama dialogue, background music, narration, accompaniment, etc. in relation to the image media 232, but the present invention is not limited thereto.

The track area 226 of audio media includes media information 226d of audio media and metadata 226t of audio media. The media information 226d of the audio media is media information about the audio media and may include the position, time information, synchronization information, and the like of the audio media 236. Here, the synchronization information is information for synchronization between the audio media 236 and the video media 232 (or the animation data 234 and the text media 238). The metadata 226t of the audio media is all information related to the audio media 236, and may be, for example, audio producer information, audio production date, audio media production episode, and the like.

The text media 238 is actual data constituting a text, for example, when the audio media 236 is music, the text media 238 may be lyrics, and the video media 236 is a drama or a movie. The text media 238 can be subtitles, but since this relates to an application, the present invention is not limited thereto.

The track area 228 of the text media includes media information 228d of the text media and metadata 228t of the text media. The media information 228d of the text media may include the position and the synchronization information of the text media 238, and the synchronization information may include the text media 238 and the image media 232 (or the animation data 234). Information for synchronizing with the audio media 236). The metadata 228t of the text media is all information related to the text media 238 and may be text media producer information, text media production date and time, text media production episode, and the like.

The media file format 200 according to another embodiment of the present invention may include a plurality of media as an extended form by providing the information areas of the above structure.

3 is a block diagram of a media file playing apparatus according to an embodiment of the present invention. Referring to FIG. 3, the media file reproducing apparatus 300 (hereinafter, referred to as the media file reproducing apparatus 300) according to an embodiment of the present invention is associated with the media file storing unit 400 and the interface unit 310. , A metadata search unit 320, a media information analyzer 340, and a media playback unit 360.

The media file storage unit 400 is a storage in which one or more media files are stored. The media file format is a media file format 100 of FIG. 1 or a media file format 200 of FIG. It may include metadata 124t and 224t of animation data. Meanwhile, the plurality of media files stored in the media file storage unit 400 may be configured as a database or a database management system, but the present invention is not limited thereto.

The interface unit 310 receives the input signals IN_1 and IN_2 from the outside of the media file reproducing apparatus 300, and outputs an output signal of the metadata retrieval unit 320 (or the media information analyzer 340) (eg : Search box, search results, etc.) are output to the outside.

The metadata search unit 320 inquires metadata of a plurality of animation data through the input search word, and outputs the inquiry result. In detail, when a search request input signal IN_1 including a search word is received, the metadata search unit 320 accesses a plurality of media files stored in the media file storage unit 400. Then, the metadata of the animation data included in the media file is searched, and if it is found that the same or similar to the search word entered among the metadata, the metadata (and the name of the media file having the metadata) is searched. Output as. For example, if the search term is "[effect =] opacity & [producer =] Hong Gil-dong", the metadata search unit 320 accesses the media file storage unit 400 to display the effect name among the metadata of the animation data. There is 'opacity' and the producer information inquires whether there are media files with 'Hong Gil-dong'.

When the media information analysis unit 340 receives a play request (IN_2) for a specific media file, the media information analyzer 340 reads out the media file from the media file storage unit 400, parses each information area included in the media file, and The media information of the animation data and the media information of the video media stored in the information area are analyzed. The media information analyzer 340 analyzes each piece of media information in this way to grasp the position, time information, and the like of the animation data (or image media). If the format of the media file is the media file format 200 according to the second embodiment of the present invention, the media information analyzer 340 may not only output the media information of the animation data and the media information of the image media, It is preferable to analyze media information of media information and text media.

The media player 360 outputs a scene OUT of playing the corresponding media file by applying animation data to the image media through the analysis result of the media information analyzer 340. If the format of the media file is the media file format 200 according to the second embodiment of the present invention, the media player 360 may play not only animation data and video media, but also audio and text media. Do. If the format of the audio data to be decoded is different, it can be changed to the audio format according to the present invention. In addition, in order to synchronize, an audio signal may be output using the number of samples or time information corresponding to the duration.

4 is a flowchart illustrating a metadata search process in a media file playing method according to an embodiment of the present invention. The metadata search process is a metadata search process of animation data, and a process for searching for a media file to be played before a specific media file is played. The process of playing a specific media file after such a search process is illustrated in FIG. 5. It will be described later with.

Referring to FIG. 4, the apparatus for reproducing a media file receives a search word and a search request (S510). Then, the media file reproducing apparatus accesses a plurality of media files stored in the media file storage unit by using the search word input in step S510 and inquires metadata of animation data included in the media file (step S520). . Then, the media file reproducing apparatus outputs the result queried in step S520 (step S530). If the inquiry result in step S520, if there is no inquiry media file, a message indicating that there is no inquiry result is output, and if there is an inquiry result, the name of the inquiry media file and metadata of the animation data. And so on.

5 is a flowchart illustrating a process of playing a media file in a method of playing a media file according to an embodiment of the present invention. Such a media file playback process may be a process performed after the metadata search process described above with reference to FIG. 4, or may be a process not involving the metadata search process.

Referring to FIG. 5, first, a media file reproducing apparatus receives a playback command for a specific media file (step S610). Then, the media file reproducing apparatus parses each information area included in the media file (step S620). Then, the media information of the animation data and the media information of the image media are analyzed (S630). In this case, when the media file includes audio media and text media, it is preferable to analyze media information of audio media and media information of text media. After determining the position and time of the animation data and the image media through step S630, when the animation data and the image media are encoded, the media file reproducing apparatus decodes the animation data and the image media (S640). The media file reproducing apparatus then reproduces the media file by applying animation data to the image media (S650).

According to the present invention, the animation data may be applied to the image media included in the media file to give an animation effect to a still image or a moving image.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments. It will be understood that various modifications and changes may be made without departing from the scope of the appended claims.

According to an aspect of the present invention, in implementing a slide show having an animation effect, since it is a method of giving various animation effects to a still image or a video, compared to generating a video bitstream into which unnecessary frames or screens are inserted, The effect is that the data size is significantly reduced.

According to another aspect of the present invention, since the metadata of the animation data included in the media file can be provided for the content search, the general user can easily find the desired media file by using the animation effect name (eg, the tilt effect). I can make it.

According to another aspect of the present invention, since a media file may include audio media or text media, when a music track and a lyrics track are included in a slide show with animation, it may be applied as a music photo album.

Claims (12)

delete delete delete A file information area having information about the media file; A media data area having animation data and video media, and A device for reproducing a media file including a media information area including media information of the animation data, metadata of the animation data, media information of the video media, and metadata of the video media, A media information analyzer which reads the media file, parses each information area in the media file, and analyzes media information of the animation data and media information of the video media; And And a media player configured to apply the animation data to the video media based on the analyzed media information of the animation data and the media information of the video media. The apparatus of claim 4, wherein the media file playing apparatus is provided. And a metadata retrieval unit for retrieving metadata of a plurality of animation data through the input search word and outputting the retrieval result. A file information area having information about the media file; A media data area having animation data and video media, and A method of playing a media file, comprising a media information area including media information of the animation data, metadata of the animation data, media information of the video media, and metadata of the video media. Reading the media file, parsing respective information areas in the media file, and analyzing media information of the animation data and media information of the video media; And And applying the animation data to the image media based on the analyzed media information of the animation data and the media information of the image media to play the media file. The method of claim 6, The animation data is divided into access units, and the media information of the animation data includes the time information for each access unit. The method of claim 7, wherein The time information for each access unit includes one or more of order information and period information. The method of claim 7, wherein The image media is divided into still images, And the access unit of the animation data includes effect information and period information on one or more still images. The method of claim 9, And the effect information includes one or more of grouping information, size information, opacity information, and geometric transformation information. delete The method of claim 6, The media data area further includes audio media and text media, The media information area further includes media information of the audio media and media information of the text media. The media information of the animation data further comprises a synchronization information for the audio media and the text media.

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