(2013/3/6, N.Tajima)
<< How to create MPEG-1 movie file by using gnuplot >>

----------[ Description of the files ]----------

1. "wf.c" is a C program to create data files to be used by gnuplot.
2. PNG files are created with gnuplot.
3. Movie file "wf.m1v" is created with ffmpeg from the PNG files.

To newly create the movie, "make all".

----------[ Notes on the usage of ffmpeg ]----------

ffmpeg -i wf%03d.png -r 30 -s 640x480 -sameq wf.m1v

-i : input file name.
      "%03d" is the format for the serial number of the frames 
       (=PNG pictures).
-r : Frame rate (per a second)

-s : frame size (pixels)

-sameq: Use same video quality as source.
      Without this option switch, block noise is very strong.
      If I could not utilize this switch, I would rather have chosen
      to make GIF or MNG movies, which are for slower frame rates
      but are free of block noise.

----------[ Information on the software "ffmpeg" which I used ]----------
Name        : ffmpeg
Version     : 0.6.3
Summary     : Digital VCR and streaming server
URL           : http://ffmpeg.org/
License     : GPLv2+
Description :
   FFMpeg is a complete and free Internet live audio and video
   broadcasting solution for Linux/Unix. It also includes a digital
   VCR. It can encode in real time in many formats including MPEG1
   audio and video, MPEG4, h263, ac3, asf, avi, real, mjpeg, and flash.

----------[ Information on the software "gnuplot" which I used ]----------
GNUPLOT Version 4.6 patchlevel 1 last modified 2012-09-26 
URL: http://www.gnuplot.info