JP2019024229A - ファイル生成方法およびファイル生成装置 - Google Patents
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Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Computer Security & Cryptography (AREA)
- Television Signal Processing For Recording (AREA)
- Information Retrieval, Db Structures And Fs Structures Therefor (AREA)
- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
- Signal Processing For Digital Recording And Reproducing (AREA)
Abstract
Description
本発明者は、「背景技術」の欄において記載した上記特許文献1のファイル生成方法に関し、以下の問題が生じることを見出した。
図5は、本実施の形態におけるファイル生成装置の構成を示すブロック図である。
上記実施の形態では、差分ファイルおよびコピーマニフェストファイルを用いてMP4ファイルを生成したが、これらのファイルを用いずにMP4ファイルを生成してもよい。本変形例に係るファイル生成方法では、それぞれ平文のヘッダを有する複数のSource PacketからなるMPEG2−TSのストリームファイルを、カウンタを用いてMP4のストリームファイルに変換する。これにより、MP4のストリームファイルが生成される。なお、MPEG2−TSのストリームファイルは元ファイルであり、MP4のストリームファイルはMP4ファイルである。
上記実施の形態では、差分ファイルおよびコピーマニフェストファイルを用いてMP4ファイルを生成したが、これらのファイルを用いずにMP4ファイルを生成してもよい。本変形例に係るファイル生成方法では、補助情報を含むMPEG2−TSのストリームファイルを、その補助情報を用いてMP4のストリームファイルに変換する。これにより、MP4のストリームファイルが生成される。
11 元ファイル取得部
12 差分ファイル取得部
13 手順ファイル取得部
14,104 生成部
101 補助情報サーチ部
103 補助情報解析部
104a サンプル生成部
104b サンプルエントリ生成部
Claims (3)
- MP4ファイルを生成するファイル生成方法であって、
MP4と異なるファイルフォーマットで構成されている元ファイルを取得し、
前記元ファイルに含まれるパケット毎に、ヘッダ情報を除いたペイロード部分を組み合わせるとともに、先頭にメタデータを付加して前記MP4ファイルを生成するファイル生成方法であり、
前記ヘッダ情報は暗号化されていない平文であり、前記ペイロード部分はカウンタを用いて暗号化されている、
ファイル生成方法。 - ビデオデータが含まれる前記ペイロード部分は第1のカウンタを用いて暗号化されており、オーディオデータが含まれる前記ペイロード部分は前記第1のカウンタとは異なる第2のカウンタを用いて暗号化されている、
請求項1記載のファイル生成方法。 - MP4ファイルを生成するファイル生成装置であって、
MP4と異なるファイルフォーマットで構成されている元ファイルを取得する元ファイル取得部と、
前記元ファイルに含まれるパケット毎に、ヘッダ情報を除いたペイロード部分を組み合わせるとともに、先頭にメタデータを付加して前記MP4ファイルを生成する生成部と、
を有し、
前記ヘッダ情報は暗号化されていない平文であり、前記ペイロード部分はカウンタを用いて暗号化されている、
ファイル生成装置。
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
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US201361904734P | 2013-11-15 | 2013-11-15 | |
US61/904,734 | 2013-11-15 | ||
US201361905907P | 2013-11-19 | 2013-11-19 | |
US61/905,907 | 2013-11-19 |
Related Parent Applications (1)
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JP2014222795A Division JP6411862B2 (ja) | 2013-11-15 | 2014-10-31 | ファイル生成方法およびファイル生成装置 |
Publications (1)
Publication Number | Publication Date |
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JP2019024229A true JP2019024229A (ja) | 2019-02-14 |
Family
ID=53374474
Family Applications (2)
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JP2014222795A Expired - Fee Related JP6411862B2 (ja) | 2013-11-15 | 2014-10-31 | ファイル生成方法およびファイル生成装置 |
JP2018182736A Ceased JP2019024229A (ja) | 2013-11-15 | 2018-09-27 | ファイル生成方法およびファイル生成装置 |
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JP2014222795A Expired - Fee Related JP6411862B2 (ja) | 2013-11-15 | 2014-10-31 | ファイル生成方法およびファイル生成装置 |
Country Status (4)
Country | Link |
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US (3) | US9654823B2 (ja) |
EP (1) | EP3070933A1 (ja) |
JP (2) | JP6411862B2 (ja) |
CN (1) | CN105210365A (ja) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3134995B1 (en) * | 2014-08-07 | 2021-12-22 | DivX, LLC | Systems and methods for protecting elementary bitstreams incorporating independently encoded tiles |
US9398330B2 (en) * | 2014-08-22 | 2016-07-19 | Sony Corporation | Information processing device, information recording medium, information processing method, and program |
CN110545490B (zh) * | 2018-05-29 | 2021-03-16 | 北京字节跳动网络技术有限公司 | 媒体文件转换方法、装置及存储介质 |
EP3997880A1 (en) * | 2019-07-12 | 2022-05-18 | Telefonaktiebolaget LM Ericsson (publ) | Signaling of access unit delimiter |
Family Cites Families (17)
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JPWO2005015907A1 (ja) * | 2003-08-08 | 2006-10-12 | 松下電器産業株式会社 | データ処理装置 |
JP2005229587A (ja) * | 2004-01-15 | 2005-08-25 | Matsushita Electric Ind Co Ltd | 多重化方式変換装置 |
TWI285055B (en) * | 2004-09-30 | 2007-08-01 | Nippon Telegraph & Telephone | Method for progressive lossless video coding, method for progressive lossless video decoding, progressive lossless video coding apparatus, progressive lossless video decoding apparatus, and recording media of progressive lossless video coding program... |
EP1879388B1 (en) * | 2005-04-22 | 2013-02-20 | Panasonic Corporation | Video information recording device, video information recording method, video information recording program, and recording medium containing the video information recording program |
JP2007172165A (ja) * | 2005-12-20 | 2007-07-05 | Matsushita Electric Ind Co Ltd | 権利情報管理方法 |
JP4805206B2 (ja) * | 2007-04-25 | 2011-11-02 | 富士通セミコンダクター株式会社 | 映像データ録画再生装置、システム及び方法 |
US20100232504A1 (en) * | 2009-03-13 | 2010-09-16 | The State of Oregon acting by and through the State Board of Higher Education on behalf of the | Supporting region-of-interest cropping through constrained compression |
US20110157322A1 (en) * | 2009-12-31 | 2011-06-30 | Broadcom Corporation | Controlling a pixel array to support an adaptable light manipulator |
JP2011142586A (ja) * | 2010-01-08 | 2011-07-21 | Sony Corp | 画像処理装置、情報記録媒体、および画像処理方法、並びにプログラム |
US20120114118A1 (en) * | 2010-11-05 | 2012-05-10 | Samsung Electronics Co., Ltd. | Key rotation in live adaptive streaming |
US20130298171A1 (en) * | 2010-11-18 | 2013-11-07 | Sharp Kabushiki Kaisha | Device for generating content data, method for generating content data, and recording medium |
JP5863254B2 (ja) * | 2011-02-24 | 2016-02-16 | Necパーソナルコンピュータ株式会社 | 変換装置、情報配信装置、通信システム、制御方法及びプログラム |
US8489760B2 (en) * | 2011-03-31 | 2013-07-16 | Juniper Networks, Inc. | Media file storage format and adaptive delivery system |
US9420259B2 (en) * | 2011-05-24 | 2016-08-16 | Comcast Cable Communications, Llc | Dynamic distribution of three-dimensional content |
WO2012164920A1 (ja) * | 2011-06-01 | 2012-12-06 | パナソニック株式会社 | 映像処理装置、送信装置、映像処理システム、映像処理方法、送信方法、コンピュータプログラム及び集積回路 |
JP2013093755A (ja) * | 2011-10-26 | 2013-05-16 | Canon Inc | 映像記録装置及び映像記録方法 |
JP6467680B2 (ja) * | 2014-01-10 | 2019-02-13 | パナソニックIpマネジメント株式会社 | ファイル生成方法およびファイル生成装置 |
-
2014
- 2014-10-31 JP JP2014222795A patent/JP6411862B2/ja not_active Expired - Fee Related
- 2014-11-10 CN CN201480026725.6A patent/CN105210365A/zh active Pending
- 2014-11-10 EP EP14862939.7A patent/EP3070933A1/en not_active Withdrawn
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2016
- 2016-01-22 US US15/004,565 patent/US9654823B2/en not_active Expired - Fee Related
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2017
- 2017-04-07 US US15/481,794 patent/US10028020B2/en not_active Expired - Fee Related
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2018
- 2018-06-14 US US16/008,768 patent/US20180302674A1/en not_active Abandoned
- 2018-09-27 JP JP2018182736A patent/JP2019024229A/ja not_active Ceased
Also Published As
Publication number | Publication date |
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US20170214969A1 (en) | 2017-07-27 |
JP2015097386A (ja) | 2015-05-21 |
JP6411862B2 (ja) | 2018-10-24 |
EP3070933A4 (en) | 2016-09-21 |
CN105210365A (zh) | 2015-12-30 |
US9654823B2 (en) | 2017-05-16 |
US20180302674A1 (en) | 2018-10-18 |
US20160156968A1 (en) | 2016-06-02 |
EP3070933A1 (en) | 2016-09-21 |
US10028020B2 (en) | 2018-07-17 |
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