This tutorial addresses the generation of Quicktime and MPEG animation files, common formats used in publishing on the World Wide Web (WWW).
Though Quicktime was originally designed for the Macintosh, it has become a standard for the World Wide Web. Players for various machines are available from http://www.mcad.edu/Guests/EricB/xplat.movie.html. In addition Quicktime files can easily be converted to MPEG files using the Macintosh Sparkle application, as discussed below.
Two basic methods for generating Quicktime and MPEG movies are presented. The first method involves the use of the Macintosh and software specific to the Macintosh. The second method will use only Unix applications. This method is limited to creating MPEG movies. Both of these methods will use Sun rasterfiles as the input. Sun rasterfiles are easily generated with IDL or by converting an NCAR metacode file to a Sun rasterfile. A third method will soon be added that covers the PC architectures (e.g. Windows and DOS-based machines).
Example use of GraphicConverter:
--Revised 31 January 1996
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However, the mpeg_create script can be used to generate MPEG movies from Sun rasterfiles or GIF formatted files. The script requires the following three executables - be sure to select Load to Local Disk from the Options menu if using Mosaic before downloading a file.
The NCAR Graphics command ctrans can be used to convert NCAR Graphics metacode into Sun rasterfile format. The Sun rasterfile can then be decomposed into individual frames using the rassplit command. The mpeg_create command is then used to generate the MPEG movie from the individual Sun rasterfiles. Here's an example of creating an MPEG movie from an NCAR Graphics metacode file. For more information on NCAR Graphics you can go here.
The animations seen in the November 1993 (Preliminary) sequence is an example of a multipane animation. Each frame of this sequence was generated using the following IDL procedures:
--Revised 31 January 1996 firstname.lastname@example.org
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