Watermark on animated gif with php

Question

I need a function that adds a watermark to an animated gif. How I can do that with PHP and ImageMagick?

This is my code, but it doesn't work.

function IMagickWatermark($sf, $sfDest, $sfLogo, $sGravity='southeast'){
        //$sCmd = "composite -compose bumpmap -gravity $sGravity $sfLogo \"$sf\" $sfDest";
        $sCmd = "convert \"$sf\" -coalesce -gravity south -draw 'image over 0,0 0,0 \"$sfLogo\"' \"$sfDest\"";
        exec($sCmd);
        return 1;
    }
$sf = $_SERVER['DOCUMENT_ROOT']."/test/source.gif";
$sfDest = $_SERVER['DOCUMENT_ROOT']."/test/dest.gif";
$sfLogo = $_SERVER['DOCUMENT_ROOT']."/test/logowithtext.gif";
IMagickWatermark($sf, $sfDest, $sfLogo, $sGravity='SouthEast');

Please post some code. I think php's gd library is good for the job. — Adam, May 10 '12 at 09:53
Us folks at StackOverflow would love to help you but we need to see what you've already accomplished and where exactly you're having trouble to help you better. — Nathan C., May 10 '12 at 09:54
@Janus Troelsen, that script: http://gifbox.ru/test/test.php - i do not know why it doesnt (: May be my hoster dont unstall ImageMagick? How i can to know it? — Nikoole, May 10 '12 at 10:36
try executing it on the command line (CLI) from a shell on your host machine — Janus Troelsen, May 10 '12 at 10:48
dpkg --list | grep imagemagick ii imagemagick 8:6.6.0.4-3ubuntu1.1 image manipulation programs Library is installed... — Nikoole, May 10 '12 at 11:01

score 15 · Accepted Answer · answered May 10 '12 at 11:32

Try this:

$animation = ani.gif; 

$watermark = logo.png; 

$watermarked_animation = "morph.gif"; 

$cmd = " $animation -coalesce -gravity South ". 
" -geometry +0+0 null: $watermark -layers composite -layers optimize "; 

exec("convert $cmd $watermarked_animation ");

enter image description here

Janus Troelsen · Answer 2 · 2012-05-10T11:29:40.927

0

<?php
shell_exec('for i in sphere*.gif; do convert $i  -font Arial -pointsize 20 \
      -draw "gravity south \
             fill black  text 0,12 \'Copyright\' \
             fill white  text 1,11 \'Copyright\' " \
      wmark_$i; done');

shell_exec("convert   -delay 20   -loop 0   wmark_sphere*.gif   animatespheres.gif");
$f = fopen("animatespheres.gif", 'rb');
fpassthru($f);
fclose($f);
?>

if you need to debug, remove the fopen,fpassthru,fclose lines and add echo's for the shell_execs.

edited May 10 '12 at 11:29

answered May 10 '12 at 10:01

Janus Troelsen

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What kind of files: sphere*.gif wmark_sphere*.gif animatespheres.gif Where is source, destination, file with logo or text..? – Nikoole May 10 '12 at 10:22
``sphere.gif`` are your input files. ``wmark_sphere.gif`` are generated temporary files. ``animatespheres.gif`` is your result. there is no file with logo or text, it is dynamically generated. if you want to watermark using an image, read this: http://www.imagemagick.org/Usage/annotating/ – Janus Troelsen May 10 '12 at 10:30
It dont work: ` ini_set("display_errors","1"); ini_set("display_startup_errors","1"); ini_set('error_reporting', E_ALL); $sf = $_SERVER['DOCUMENT_ROOT']."/test/d1cdcdf2cf6dba7a12511d6077783895.gif"; shell_exec("for i in $sf; do convert $i -font Arial -pointsize 20 \ -draw \"gravity south \ fill black text 0,12 'Copyright' \ fill white text 1,11 'Copyright' \" \ wmark_$i; done"); shell_exec("convert -delay 20 -loop 0 wmark_sphere*.gif animatespheres.gif"); fpassthru("animatespheres.gif"); ?>` that code: http://gifbox.ru/test/index.php – Nikoole May 10 '12 at 10:49
try now, i edited it to fix the quotes. try to understand the code. $a in a string quoted with double quotes will not work in php cause it thinks it's a php variable, even when it's not. that's why i exchanged the quotes. – Janus Troelsen May 10 '12 at 11:15
You wrote: try executing it on the command line (CLI) from a shell on your host machineconvert. I try to do that with command: "/var/www/gifbox.ru/test/d1cdcdf2cf6dba7a12511d6077783895.gif" -coalesce -gravity south -draw 'image over 0,0 0,0 "/var/www/gifbox.ru/test/gifboxru.gif"' "/var/www/gifbox.ru/test/_d1cdcdf2cf6dba7a12511d6077783895.gif" and gif with watermark is created! Byt when i run php script - it doesnt created. – Nikoole May 10 '12 at 11:18
I try: Warning: fpassthru() expects parameter 1 to be resource, string given in /var/www/gifbox.ru/test/index.php on line 24 – Nikoole May 10 '12 at 11:23
you might have a permissions issue. try running ``chmod -R ugo+rwx .`` from the directory where the images and script are located (``test``) – Janus Troelsen May 10 '12 at 11:31
i set permissions for file and folder to 777. When i run script with: `$f = fopen("animatespheres.gif", 'rb');` - iget an error (file animatespheres.gif - does not exixt), but then i run script with: $f = fopen("animatespheres.gif", 'w'); and file was created with size=0b. Then i run with: `$f = fopen("animatespheres.gif", 'rb');`, but filesize = 0b. – Nikoole May 10 '12 at 11:50
Thank you very much for trying to help! User Bonzo suggested a working solution. Once again, many, many thanks! – Nikoole May 10 '12 at 11:57

Watermark on animated gif with php

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