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!MPEGfast
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!Help
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1995-06-05
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========================
!Help file for !MPEGfast
========================
Version 0.01 (1993 sometime)
(C) 1993-1995 Paul LeBeau
Note: this software is FREEWARE. Permission to use
and distribute for non-profit purposes is granted,
as long as the software is copied, unaltered in it's
entirety. All other use restricted - please contact
me if in doubt.
--------
This is an MPEG player written almost entirely in
assembler. It more-or-less supercedes my old port
of the Berkeley player. However, this player is not
a port of the Berkeley MPEG player and contains none
of their code, although being able to look at their
code was a great help in writing this.
Note: it does not have a snazzy (or otherwise)
front-end but is launched, like the old one, by just
double-clicking on an MPEG file. As long as the file
has been filetyped correctly and !MPEGfast has been
'seen' by the Filer, the movie should start playing
in the middle of the screen.
Good luck, and please read the notes below.
Paul LeBeau
(paul@caverock.co.nz)
--------------------------------------------------
This software is FREEWARE.
Permission for non-profit distribution of this
software is granted, provided it is distributed
"as is", without change.
Thanks are due to:
Tim Dobson at Acorn
- for tweaks to the 16bpp frame rendering
Sophie Wilson at Acorn
Chris Marshall
If you find any bugs or have technical questions,
then feel free to email me. Use the email address
above, or alternatively try mailing me at the
following address:
Paul LeBeau
Cave Rock Software
PO Box 22488
High St
Christchurch 8001
New Zealand
---------------------------------------------------
Some additional notes:
- Currently only plays I-frame-only movies (commonly
known as 'Xing compatible' movies). This player
was written some time ago and has been languishing
on my hard disc awaiting P and B frame support
(plus other enhancements). I thought it was about
time I let others use it now anyway. If you run a
movie through it that has the other frame types,
they are ignored and skipped (only the I frames are
displayed).
- Currently only supports screen modes with 4bpp or
greater.
- In order to reduce the distribution size, I have
only included the colour translation/dithering
files for 8bpp modes (4bpp modes are supported
internally). If you want to view movies in 16bpp
modes or greater, you will need to find the 16yuv*
data files - either from !MPEG (my earlier port of
the Berkeley C player), or from a recent version
of !ARMovie. You should then copy them into
"!MPEGfast.Tables".
However, if you *do* have a recent version of
!ARMovie (eg Risc PC or later), and it has been
'seen' by the filer, !MPEGfast will automatically
look for them in there (ie. no need to copy them out).
Notes to users with Computer Concepts 'Movie Magic'
MPEG cards.
The MPEG software that comes on the card interferes
with this player somewhat. The MPEG pseudo filing system
it uses is the culprit. Unfortunately, the Image
filing system call to disable this behaviour doesn't
seem to work. As a workaround, I've made the player
also respond to a separate filetype - &0F8. Re-filetype
your MPEG files to this filetype and then double-click
on them as usual.