MGMT 1030 Lecture Notes - Lecture 12: Realplayer, Flash Video, Macromedia
6 May 2018
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MGMT 1030 Tutorial 12 Notes – Size of the Image
Introduction
• Reduce the size of the image, limit the number of colors, or reduce the frame rate.
• It is also possible, or, more likely, necessary to compress the video data.
• Each of these options has obvious drawbacks.
• The solution chosen also depends on the nature of the method used to make the video
available to the user.
• One option is to present the video as a file on the system.
• The video file is either accessed from a removable medium, such as a DVD-ROM, or
downloaded and stored on the system.
• Alternatively, the video may be made available to the system in real time.
• The latter technique is called streaming video.
• Streaming video is normally downloaded continuously from a Web server or network
server.
• Video conferencing is an example of a streaming video application.
• The requirements for streaming video are much more stringent than for locally stored
video.
• The amount of data that can be downloaded per unit time is limited by the capability of
the network connection.
• Furthermore, the processor must be able to uncompressed and decode the data fast
enough to keep up with the incoming data stream.
• Generally speaking, streaming video is of lower display quality than video that is
available locally.
• Various mixes of these solutions are used.
• There are a number of proprietary formats in use, including RealPlayer from Real.com,
Windows Media Format from Microsoft, and Flash Video from Macromedia.
• The output, although less than ideal, is adequate for many applications.
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