MPEG2PPM

Section: Misc. Reference Manual Pages (1.2)
Updated: 15 January 1995
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NAME

mpeg2ppm - MPEG to PPM converter

SYNOPSIS

mpeg2ppm [-h] [-f] [-s start] [-e end] [filename]

DESCRIPTION

Mpeg2ppm will decode a (video-only) MPEG-I-stream and extract the rebuild frames as PPM-files (Portable Pixmap). The extracted frames will be numbered starting from zero (0), the first part of the filename is derived from the original MPEG-stream, the files extension will be .PPM.

The final PPM-files will be in 24-bit-format.

-h: This option will show the usage.

-f: This option will extract only the first frame of the MPEG-stream. The PPM-file will be named after the MPEG-stream-file, its extension will be .PPM.

-s start: This option let you specify a starting frame. Converting will start with the specified framenumber. Has to be used in conjunction with the following option.

-e end: This option let you specify the ending frame. Converting will stop with the specified framenumber. Has to be used in conjunction with the option above.

EXAMPLES

You could start mpeg2ppm with f.e. the following options:

mpeg2ppm -h
mpeg2ppm -f < ifa.mpg
mpeg2ppm -s 10 -e 20 ifa.mpg

NOTES

Mpeg2ppm expects MPEG-1 video streams only. It can not handle multiplexed MPEG streams or video+audio streams. The converter uses the paris entropy coding table set (which I believe to be the MPEG-1 standard).

Some streams do not end with the proper sequence end code and will probably generate an "Improper sequence end code." error when done playing.

THANKS

Special thanks to the Berkeley-code "mpeg_play" and the PPM-patch by

Ketan Patel: University of California, Berkeley, kpatel@cs.berkeley.edu
Brian Smith: University of California, Berkeley, bsmith@cs.berkeley.edu
Henry Chi-To Ma: University of California, Berkeley, cma@cs.berkeley.edu
Kim Man Liu: University of California, Berkeley, kliu@cs.berkeley.edu
Jef Poskanzer: jef@netcom.com

COPYRIGHT

Mpeg2ppm was developed by

PHADE Software
Inh. Frank Gadegast
Leibnizstr. 30
10625 Berlin GERMANY

phade@contrib.de, http://www.contrib.de/~phade

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