1 VIDEOMD 教授：張迺貞 老師 組員：劉仁翔 王憲章 林黃瑋（報告者）

2 大綱 What is VideoMD VideoMD Data Dictionary Video Technical Metadata Extension Schema VIDEOMD 現況 PB Core 結論 參考文獻

3 What is VideoMD 全名： Video Technical Metadata Extension Schema 源起：由美國國會圖書館所設計 VMD is a set of technical data elements required to manage digital video files. (VMD 是一個管理數位視 訊檔案的技術資料元素表 ) VIDEOMD 有 36 個元素，是為了數位圖書館計畫和典 藏數位化視訊資料而設計 2006 年 Megan Bibb 和 Jennifer Colby 對於視訊數位物 件的詮釋資料報告中，有討論到 VideoMD 。它是適 用在視訊檔案資訊上，例如位元率和壓縮等。

4 VideoMD Data Dictionary (1/2)

5 VideoMD Data Dictionary (2/2) Field Name Field Definition aspect_ratio Desired aspect ratio of the image on screen bits_per_sample Number of bits per sample depth calibration_ext_int Indicator that the calibration information is contained within the file or externally calibration_location Temporary location of the calibration file if it is external calibration_type Type of calibration used data_rate Data rate of the audio in an MPEG or other compressed file expressed in mbps data_rate_mode Indicator that the data rate of the video is fixed or variable duration Elapsed time of the entire file, expressed using ISO 8601 syntax (hh:mm:ss, where hh is 00 through 23) frame_rate Number of frames per second at which the video source item was digitized note Additional information or comments about the video file pixels_horizontal Horizontal size of a frame in picture elements pixels_vertical Vertical size of a frame in picture elements resolution Resolution of digital video source item expressed as horizontal lines sampling Video sampling format in terms of luminance and chrominance scan Indication of whether digital video item is scanned in an interlaced or progressive mode sound Indicator of the presence of sound in the video file (yes/no)

6 Video Technical Metadata Extension Schema (1/2) 屬性 URI Namespace

7 Video Technical Metadata Extension Schema (2/2)

8 VIDEOMD 現況 VMD Schema 現階段仍不夠完善 PB Core ： Public Broadcasting Metadata Dictionary 美國廣播與電視界正在發展中

9 PB Core (1/2)

10 PB Core (2/2)

11 結論 目前尚未有一個效率的視訊 Metadata ， VideoMD 也還未成為標準 期待日後能發展出一個有效率的視訊 Metadata 新技術的出現

12 參考文獻 1. 張迺貞等 (2008) 。美國國會圖書館數位保存雛型計畫技術探討 — 訪談美國國家視聽保存中 心 Carl Fleischhauer 。中華民國圖書館學會會訊，第 16 卷，第 頁。 期 / 國圖 張迺貞.pdfhttp:// 期 / 國圖 張迺貞.pdf 2. MoPark Initiative Metadata Options Appraisal 3. METADATA ENCODING AND TRANSMISSION STANDARD: PRIMER AND REFERENCE MANUAL 4. Metadata for digital libraries: state of the art and future directions 5. Metadata for Audiovisual Materials and its Role in Digital Projects 6. Appendix I Multimedia Metadata Extension Schemas 7. BIBB, MEGAN (2006), DIGITIZED MOVING IMAGE METS SIP PROFILE Profile.doc Profile.doc 8. Colby, Jennifer (2006), Born Digital Moving Image METS SIP Profile 9. Audio-Visual Prototyping Project─VideoMD Data Dictionary

13 敬請指教