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!PlayAVI
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1993-08-09
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!playAVI (AVI film player) v1.0
© Paul Gardiner (1 Aug 1993).
This is a player for films produced by Microsoft's Video for Windows package.
Hopefully the user interface will be found, in the most, self explanatory.
The only hidden feature is to loop on several films; this is achieved by
drag-dropping extra films onto an already running window. Best results are
achieved when running in mode 21 or 28, since a four-colour dithering pattern
is then used, although not a particularly good one (advice on this would be
appreciated). On machines that run slow in those modes, mode 40 or 15
can be used, giving a two-colour dithering pattern. Sixteen colour modes
work but come out mostly in greys.
I have chosen &071 as the file type of AVI films, which may conflict with
other applications, but only the !Boot and !Run files depend on this choice,
so you can change to another file-type code if necessary.
This version supports only CRAM compressed video files. It does not play
sound tracks and may even fall over when attempting to play a film that has
a sound track. I would be grateful for any reports of such bugs, especially
if accompanied by the film that showed up the bug. CRAM was decoded by
inspecting just four AVI films, and those four are the only films on which
the player has been tested, so don't expect too much. I intend, at some
stage, to write a fuller and more robust version, and sell it for around
ten pounds; anyone interested should email me.
This software is supplied "as is", with no implied guarantee of suitability
for any purpose. I will not take any responsibility for any loss caused
directly or indirectly by use of this software. You can freely distribute
this program, provided it is unchanged from the original and no charge is
made.
I thank Bryan Scattergood for many useful discussions when cracking the
CRAM format, and also for being a good source of sound advice on
programming practice in general.
AVI and CRAM may be trademarks of Microsoft.
Paul Gardiner. (paulg@prg.ox.ac.uk)