MM_BSC_SOLNS_2001

MM_BSC_SOLNS_2001 - Multimedia BSc Exam Questions Jan 2001...

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Multimedia BSc Exam Questions Jan 2001 SOLUTIONS Exam paper format: (b) Time Allowed: 2 Hours (c) Answer 3 Questions out of 4 (d) Each Question Carries 27 Marks 1. (a) What is meant by the terms Multimedia and Hypermedia? Distinguish between these two concepts. Multimedia ---- An Application which uses a collection of multiple media sources e.g. text, graphics, images, sound/audio, animation and/or video. Hypermedia --- An application which uses associative relationships among information contained within multiple media data for the purpose of facilitating access to, and manipulation of, the information encapsulated by the data. 2 MARKS ---- BOOKWORK (b) What is meant by the terms static media and dynamic media? Give two examples of each type of media. Static Media – does not change over time, e.g. text, graphics Dynamic Media --- Time dependent (Temporal), e.g. Video, sound, animation. 4 MARKS --- BOOKWORK (c) What are the main facilities that must be provides in a system designed to support the integration of multimedia into a multimedia presentation? The following functionality should be provided: Digital Representation of Media --- Many formats for many media Capture: Digitisation of Media --- special Hardware/Software
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Creation and editing --- assemble media and alter it Storage Requirements --- significant for multimedia Compression --- related to above and below, ie can save on storage but can hinder retrieval Structuring and retrieval methods of media --- simple to advanced DataBase Storage Display or Playback methods --- effect of retrieval must view data Media Synchronisation --- display multimedia as it is intended 8 MARKS --- BOOKWORK ( d) Describe giving suitable code fragments how you would effectively combine and start at the same time a video clip and an audio clip in an MHEG application and start a subtiltle text display 19000 milliseconds into the video clip. You may assume that both clips are of the same duration and must start at the same instant. TheMHEG code listing below is illustrates the solution: {:Application ("SYNC_APP.mh5" 0) :OnStartUp ( // sequence of initialization actions } {:Scene ("main_scene.mh5" 0) :OnStartUp ( // sequence of initialization actions preload (2) // the connection to the source of the video clip is set up preload (3) // the connection to the source of the audio clip is set up ... setCounterTrigger (2 3 190000) // book a time code event at 190000 msec for example ... ) :Items ( // both presentable ingredients and links {:Bitmap 1 // background bitmap NOT IMPORTANT FOR SOLN :InitiallyActive true :CHook 3 // JPEG :OrigContent :ContentRef ("background.jpg") :OrigBoxSize 800 600 :OrigPosition 0 0 }
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{:Stream 2 // video clip :InitiallyActive false :CHook 101 // MPEG-1 :OrigContent :ContentRef ("video.mpg") :Multiplex ( {:Audio 3 // audio component of the video clip :ComponentTag 1 // refers to audio elementary stream :InitiallyActive true } ... // possibly more presentable ingredients }
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This note was uploaded on 01/26/2012 for the course CM 0340 taught by Professor Davidmarshall during the Fall '09 term at Cardiff University.

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MM_BSC_SOLNS_2001 - Multimedia BSc Exam Questions Jan 2001...

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