Presentation is loading. Please wait.

Presentation is loading. Please wait. Contents l Forms of Motion Picture l Multimedia products with Motion Picture Content l Motion Video Technology l Source for Motion.

Similar presentations

Presentation on theme: " Contents l Forms of Motion Picture l Multimedia products with Motion Picture Content l Motion Video Technology l Source for Motion."— Presentation transcript:



3 Contents l Forms of Motion Picture l Multimedia products with Motion Picture Content l Motion Video Technology l Source for Motion Video Objects l Playing Video on PC l Video Formats : lines, frames, fields & aspect Ratio l Analog Video Signal Waveform l T.V. Broadcast Standards l Color of Video l Analog Video Camera Principle

4 Contents (cont.) l Luma & Chroma l Hue & Saturation l Chroma Component Options l Video Signals l Composite Video Signal Wavwform :Color l Digitisation Basics l Effect of Low Pass Filters l Magnitude Domain Discretisation l Color Bitmap Encoding & CLUT l Digitised Video Standards

5 Contents (cont.) l Video Compression l Motion Compensation l Artifacts due to digitisation & compression l Video Compression Techniques & Standards l Data Rates of Media l Analog Video Recording : Tape Formats l Digital Video Camera l Digital Video Recording : Tape Formats l Video File Formats l Steps to PC Video

6 Contents (cont.) l Video Capture : Basics & Platform l Video Capture Cards l Video Capture Considerations & Procedures l Video editing : Primer & concepts l Transitions & Superimpositions l Non-linear editing l Video Editing Tools l Shooting Tips

7 Motion Video Technology for Multimedia Learning Objectives n Appreciation of Technical Aspects of lFull Motion Video lDigital Video Storage and Compression lVideo Editing lMultimedia Video Standards n Obtaining necessary background for acquiring and processing Full Motion Video Objects for embedding in Multimedia Contents.

8 Many Forms of Motion Picture n Films n35 mm, 70mm, 16mm,8mm n Broadcast TV l Ordinary l DBS TV l HDTV ( coming up) n Laser Disk (Players) n DVD (Players) n Video in Cassettes and Tapes n Video in computer l Multimedia component l Stand alone CD Video l Web Content

9 Why use Motion Video in Multimedia? n Sin qua non in True Multimedia n Most effective communication mode n Entertains and educates with least audience initiative l Brings realism l Multiple views (vista and zoom) l Being there - presence l People are already sensitised to movies l Shows changes - as and when they happen

10 The downside of Video in Multimedia n Takes two much disk space n Needs large bandwidth when transmitted n Costly to produce n Quality is difficult to achieve and highly dependent on target machine n May easily become the weakest link in the product

11 Content is the King n Every king needs subjects - so does video n what to show in video lDrama lDances linterviews lLarge artwork or mural larchitecture lRecord of events (village fair) and social functions (marriage) lHow to do things wOperation wInstallation wShow How is know-how lInternals of a machine n You get the idea

12 Multimedia Products with Motion Picture content n As embedded object. lWithin an interactive multimedia product (say, web page, encyclopedia entry). lShort length snippets (one or many) lSmall format (1/4th- 1/16th). n As the primary content lWithin an interactive multimedia presentation. lGood quality, with voice and music lAt least several minutes long. lRest of contents organised around it. lMust be at least 1/4th screen n Stand-alone object lLibrary/depository object lGood quality n Stand-alone digital video product lGood quality, Longer duration, Full screen preferred

13 Before you begin To incorporate video in multimedia, ask the following questions: n Could the video be substituted by still ? l If not, why, what is the USP? n Could Animation be better than a video ? n What would be the role of the video in the product? ( e.g. embedded object, album ) n Who would provide the footage ? n What would be the duration of the video clip(s)? n Delivery medium (CD-ROM, DVD,Internet, LAN) n Who would be editing and integrating it (skill level) and where (facilities)? n Does the producer know about the nuances of video technology?

14 Studying Motion Video Technology n All skills are to be converged n Many techniques of Multi Media borrowed from full motion video production methodology. n Possibility of auxiliary services like Desktop Video Editing. n Close kin of Animation. n Most complex and jargon ridden

15 Principle of Motion Picture: Frame Rates n Successive images (frames) of a moving object are captured in a movie camera at a fixed rate (frame rate) n The frames, when played (projected) at the same frame rate gives an illusion of moving object. n Frame rate above 20/sec is adequate. n For slow moving objects even 15 frame/sec would do. Below this rate, jerks are perceived. n Not only object motion but camera -optical motion (pan, zoom ) is to be considered. n Cine uses 24 frames per second. n Higher frame rates used for special effects.

16 Source for Motion Video Objects n Computer Files l Only form usable in Multimedia. l Many formats. l Usually compressed. n Analog Video Camera l Needs frame grabber for direct storage as a computer file. l Equipment technology mature and low cost. n Analog Video Cassettes/Tapes l Camera to tapes/cassettes. l Different qualities and standards. l Generation loss of quality. l Needs frame grabber again.

17 Source for Motion Video Objects (contd.) n Digital Video Camera l May be stored in tapes/cassettes or directly stored as computer files. l Technology still evolving. l Equipment Costly. n Digital Video Cassettes/Tapes/ disks l Surprisingly predates digital video cameras. l Old Digital Video Cassettes/Tapes/ disks are not readable by computers. l New Computer readable (compressed) formats are now available. l No generation loss. l Best suited for editing.