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- Short: WarpOS port of MPEG2 video decoder
- Author: frank@phoenix.owl.de (Frank Wille)
- Uploader: frank@phoenix.owl.de
- Version: 0.3
- Type: gfx/show
- Requires: CSPPC or BPPC, WarpOS V4 (powerpc.library V15), AHI
-
- vmpeg is another MPEG1/2 video player, based on the public source of
- the MPEG Software Simulation Group.
-
- The last days I checked all MPEG players for the Amiga, but found no
- one which is able to play a standard 352x288 MPEG movie with sound
- in real time. This one does - at least with a 604e/233 and a fast
- graphics board (a 200 MHz 604e is already critical).
-
-
- FEATURES
-
- - Cybergraphics/Picasso96 support (8-bit dithered or 15/16/32 bit
- true color). Either by direct frame buffer access (-o4) or by using
- Cybergraphics (-o5, very slow).
-
- - Picasso96 PIP support (-o6).
-
- - Automatic centering on graphics boards, in case the screen mode is
- larger than the required display.
-
- - Audio support via ahi.device unit 0.
-
- - Tries to run at natural frame rate. When it's running too fast,
- the player will wait after every frame, and when running too slow it
- will start skipping B-frames. This should prevent interruptions of
- audio output.
-
- - Option -a prevents frame-skipping and plays all frames. Sound will
- be disabled.
-
- - User may define the fps-rate, used for replay (-d). Sound will be
- disabled.
-
- - Fps counter display.
-
- - Time code display.
-
- - Backward/Forward seek function. You can scan through the whole
- movie by using the mouse.
-
- - Several work-arounds to be compatible with all movies I have seen.
-
- - Compiled by latest vbcc in highest optimization mode.
-
- - Some PPC Assembler optimizations.
-
-
- USAGE
-
- To view a movie with sound enabled just type
-
- vmpeg -o4 -s -b cd0:movie.mpg
-
- A screen mode requester will open where you can select your prefered
- resolution. 8 bit screens automatically force dithering mode. You should
- define a screen mode with a resolution of 352x288 pixels. vmpeg runs
- best at 15/16 bits, which is even faster than 8 bit.
-
- Pressing the right mouse button will display the current time code.
- When moving the mouse right or left, while holding the right button,
- you can seek for/backwards in the MPEG stream. Move the mouse very
- slowly! The stream is seeked in multiples of 1 MB. By looking at the
- time code you should easily find the position where you last stopped
- watching the movie.
-
- Backwards seeking is nearly unusable with FastFileSystem in large
- files, but works very well with others, like a CD-FileSystem or PFS/SFS.
-
- To quit, press the left mouse button or the ESC key.
-
- For more options, you may start vmpeg without arguments to get a
- complete list.
-
-
- FIXED BUGS SINCE 0.1
-
- - -m option to select screen mode id didn't work
-
- - All screen modes only worked for some graphics boards (e.g. CV64
- and PicaossIV). On other boards, only a few modes worked (e.g.
- on CVPPC and BVPPC).
-
-
- BUGS
-
- - Slow down of fast movies could work better, when having sound enabled.
-
- - True color display modes doesn't support other chroma formats
- or interlaced movies. Haven't seen those, though.
-
- - Fps counter seems to be wrong in fast movies (?).
-
-
- SOURCE
-
- Full source code is included. To recompile, you need the latest vbcc
- compiler and a make-program (the makefile is very simple, so that
- most 'makes' should work). If you have problems, try a lower optimization
- mode, or write me to get a compiler update.
-
-
- LEGAL
-
- vmpeg is freeware, of course.
-
-
- Frank Wille 27-Jun-1999 frank@phoenix.owl.de
-