create animation or AVI or animated gif from series of tifs
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From a series of tifs, what is the easiest method to create an animation? First of all it IS preferrable to use TIFS, since it is a format that is relatively "pure." Formats such as JPEG and gif are substantially filtered and produce low quality images in many circumstances. So we start with a series of TIFS, then make a set of GIFS and then convert them into an animated GIF or an AVI... Creating AVI files -- some rather easy way: In Fluent, use e.g. "Solve -- Animate" to export a series of .ppm files (warning -- you may need plenty of disk space). Use mpeg_encode.exe (Windows FLUENT users will find it at Fluent.Incntbinntx86) to create a mpeg video. Use a param file similar to the one listed below. Finally, simply RENAME the mpeg file to something.avi -- and there your are! The param file: PATTERN I GOP_SIZE 12 SLICES_PER_FRAME 1 PIXEL FULL RANGE 8 PSEARCH_ALG EXHAUSTIVE BSEARCH_ALG CROSS2 IQSCALE 8 PQSCALE 8 BQSCALE 8 FORCE_ENCODE_LAST_FRAME REFERENCE_FRAME ORIGINAL OUTPUT ani_.mpg BASE_FILE_FORMAT PPM INPUT_DIR . INPUT_CONVERT * INPUT ani_0001.ppm ani_0002.ppm ani_0003.ppm ani_0004.ppm ani_0005.ppm ani_0006.ppm ani_0007.ppm ani_0008.ppm ani_0009.ppm ani_0010.ppm ani_0011.ppm ani_0012.ppm ani_0013.ppm ani_0014.ppm ani_0015.ppm ani_0016.ppm ani_0017.ppm ani_0018.ppm ani_0019.ppm END_INPUT Steps for movie making... With your tif sequence, create a gif sequence using the "convert" program from <a target=_blank href="http://www.imagemagick.org">http://www.imagemagick.org</a>http://www.imagemagick.org Then, at your prompt (UNIX, here): % foreach $i (*.tif) convert $i $i.gif end Convert will then make square_contours-0001.tif.gif ... square_contours-0100.tif.gif. Then, use Gif Construction Set (a Windows program available for $20) to make .gif sequence into AVI To make animated gif, use the command convert -delay 20 file1.gif file2.gif ... filen.gif animation.gif Which to use? * Animated gifs are viewable with your favorite browser. * AVIs presentable in presentations with Powerpoint. The choice is yours. |
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