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multi size external imagemagick use 4:2:2 chroma subsampling as imagick extension (reduce file size by 20-30% with "almost" no human perception)

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git-svn-id: http://piwigo.org/svn/trunk@14723 68402e56-0260-453c-a942-63ccdbb3a9ee
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rvelices 2012-05-03 18:07:51 +00:00
commit c8827c24a4
1 changed files with 2 additions and 0 deletions
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2
admin/include/image.class.php
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@ -601,6 +601,8 @@ class image_ext_imagick implements imageInterface
function write($destination_filepath)
{
$this->add_command('interlace', 'line'); // progressive rendering
// use 4:2:2 chroma subsampling (reduce file size by 20-30% with "almost" no human perception)
$this->add_command('sampling-factor', '4:2:2' );
$exec = $this->imagickdir.'convert';
$exec .= ' "'.realpath($this->source_filepath).'"';