KR20100000846A - System and method of grouping tracks inside a file - Google Patents

System and method of grouping tracks inside a file Download PDF

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Publication number
KR20100000846A
KR20100000846A KR1020080060494A KR20080060494A KR20100000846A KR 20100000846 A KR20100000846 A KR 20100000846A KR 1020080060494 A KR1020080060494 A KR 1020080060494A KR 20080060494 A KR20080060494 A KR 20080060494A KR 20100000846 A KR20100000846 A KR 20100000846A
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South Korea
Prior art keywords
file
tracks
file format
metadata
multimedia
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KR1020080060494A
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Korean (ko)
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장인선
서정일
김휘용
이태진
강경옥
홍진우
김진웅
안치득
함승철
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한국전자통신연구원
(주)오디즌
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Priority to KR1020080060494A priority Critical patent/KR20100000846A/en
Publication of KR20100000846A publication Critical patent/KR20100000846A/en

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    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
    • G10L19/00—Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
    • G10L19/00—Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis
    • G10L19/008—Multichannel audio signal coding or decoding using interchannel correlation to reduce redundancy, e.g. joint-stereo, intensity-coding or matrixing
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B27/00—Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
    • G11B27/10—Indexing; Addressing; Timing or synchronising; Measuring tape travel
    • G11B27/102—Programmed access in sequence to addressed parts of tracks of operating record carriers
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B27/00—Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
    • G11B27/10—Indexing; Addressing; Timing or synchronising; Measuring tape travel
    • G11B27/19—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier
    • G11B27/28—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier by using information signals recorded by the same method as the main recording
    • G11B27/32—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier by using information signals recorded by the same method as the main recording on separate auxiliary tracks of the same or an auxiliary record carrier
    • G11B27/322—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier by using information signals recorded by the same method as the main recording on separate auxiliary tracks of the same or an auxiliary record carrier used signal is digitally coded

Abstract

PURPOSE: A system and a method of grouping tracks inside a file are provided to group presentation metadata when multimedia tracks include overlapped presentation metadata, thereby storing the grouped metadata in a file. CONSTITUTION: A plurality of multimedia tracks is saved according to a file format like the ISO file format. The multimedia tracks are compressed in the same encoding method. If parts of presentation metadata information about an included audio track are the same, the metadata information is displayed using a group box not to overlappingly save the metadata information.

Description

파일 내 트랙 그룹핑 방식 및 그 시스템{System and Method of Grouping Tracks inside a File}System and Method of Grouping Tracks inside a File}

본 발명은 객체기반 오디오 파일 포맷과 같이 동일한 부호화 방식으로 압축한 다수의 멀티미디어 트랙을 ISO 파일 포맷과 같은 파일 포맷에 따라 저장하는 방식에 관한 것이다. The present invention relates to a method of storing a plurality of multimedia tracks compressed by the same encoding scheme as an object-based audio file format according to a file format such as an ISO file format.

기존의 ISO-BMFF 및 ISO-BMFF 을 기반으로 하는 파일 포맷에서는 각각의 멀티미디어 콘텐츠를 한 개의 트랙이라고 가정한다. 따라서 ISO-BMFF을 기반으로 하는 객체기반 오디오 파일 포맷에서는 여러 개의 모노 혹은 스테레오 오디오 콘텐츠를 저장할 때 개별적인 트랙으로 저장하며, 각 트랙과 관련된 프리젠테이션 메타 데이터는 Movie Box(moov) 내의 Track Box(trak) 안에 개별적으로 저장된다.In the existing ISO-BMFF and ISO-BMFF file formats, each multimedia content is assumed to be one track. Therefore, the object-based audio file format based on ISO-BMFF saves multiple mono or stereo audio contents as separate tracks, and the presentation metadata associated with each track is stored in the Track Box (trak) in the Movie Box (moov). Are stored separately.

따라서 동일한 부호화 방식으로 압축한 멀티미디어 콘텐츠들을 여러 개 저장하는 경우 즉, 동일한 프리젠테이션 메타데이터 정보를 갖는 트랙들의 경우라도 종래의 기술은 개개의 트랙에 해당하는 개별적인 track box 내에 프리젠테이션 메타데이터 정보를 저장해서 관리해야 하는 번거로움이 수반되며, 이는 파일 포맷 관리 및 압축 측면에서 비효율적이라 할 수 있다.Therefore, even when storing multimedia contents compressed by the same encoding scheme, that is, tracks having the same presentation metadata information, the related art stores presentation metadata information in individual track boxes corresponding to individual tracks. This is cumbersome to manage, which is inefficient in terms of file format management and compression.

본 발명에서는 멀티미디어 트랙들이 서로 중복되는 프리젠테이션 메타데이터 정보를 갖는 경우, 프리젠테이션 메타데이터들을 그룹화 하여 파일 내에 저장함으로써 상기의 종래 기술의 문제를 해결하고자 한다.In the present invention, when the multimedia tracks have presentation metadata information overlapping each other, the above-described problem of the related art is solved by grouping the presentation metadata and storing the presentation metadata in a file.

본 발명은 객체기반 오디오 파일 포맷과 같이 동일한 부호화 방식으로 압축한 다수의 멀티미디어 트랙을 ISO 파일 포맷과 같은 파일 포맷에 따라 저장하는 방식을 제공한다.The present invention provides a method of storing a plurality of multimedia tracks compressed by the same encoding scheme as an object-based audio file format according to a file format such as an ISO file format.

본 발명을 이용하면, 멀티미디어 트랙들이 서로 중복되는 프리젠테이션 메타데이터 정보를 갖는 경우 특히, 객체기반 오디오 파일 포맷과 같이 동일한 부호화 방식으로 압축된 오디오 트랙이 다수 개 존재하는 경우에 각 트랙에 해당하는 개별적인 Track Box 내에 프리젠테이션 메타데이터 정보를 중복적으로 저장하여 개별적으로 관리할 필요가 없어지므로 효율적인 포맷화가 가능하다.According to the present invention, when multimedia tracks have presentation metadata information overlapping each other, particularly when there are a plurality of audio tracks compressed with the same encoding scheme as an object-based audio file format, individual track corresponding to each track may be used. Presentation metadata can be stored in the track box redundantly, eliminating the need for individual management, enabling efficient formatting.

Figure 112008045836110-PAT00001
Figure 112008045836110-PAT00001

Figure 112008045836110-PAT00002
Figure 112008045836110-PAT00002

Figure 112008045836110-PAT00003
Figure 112008045836110-PAT00003

Figure 112008045836110-PAT00004
Figure 112008045836110-PAT00004

Figure 112008045836110-PAT00005
Figure 112008045836110-PAT00005

Figure 112008045836110-PAT00006
Figure 112008045836110-PAT00006

Figure 112008045836110-PAT00007
Figure 112008045836110-PAT00007

Figure 112008045836110-PAT00008
Figure 112008045836110-PAT00008

도 1은 기존의 ISO-BMFF 의 한 예를 나타내는 도면이다.1 is a diagram illustrating an example of a conventional ISO-BMFF.

도 2 내지 도 3은 개별적으로 저장되었던 프리젠테이션 메타 데이터를 트랙이 아닌 그룹 내에 저장하여 공유하는 경우를 나타내는 도면이다.2 to 3 illustrate a case in which presentation metadata, which has been stored separately, is stored and shared in a group rather than a track.

Claims (1)

도 1 내지 도 3의 실시예를 포함하는 다수개의 멀티미디어 트랙을 ISO 파일 포맷과 같은 파일 포맷에 따라 저장하는 방식.A method of storing a plurality of multimedia tracks including the embodiment of FIGS. 1 to 3 according to a file format such as an ISO file format.
KR1020080060494A 2008-06-25 2008-06-25 System and method of grouping tracks inside a file KR20100000846A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20120119439A (en) * 2011-04-21 2012-10-31 한국전자통신연구원 Apparatus and method for configuring play list by using iso based media file format
US9955278B2 (en) 2014-04-02 2018-04-24 Dolby International Ab Exploiting metadata redundancy in immersive audio metadata

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20120119439A (en) * 2011-04-21 2012-10-31 한국전자통신연구원 Apparatus and method for configuring play list by using iso based media file format
US9955278B2 (en) 2014-04-02 2018-04-24 Dolby International Ab Exploiting metadata redundancy in immersive audio metadata

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