Memory and 503 errors with gif animation converts

[dethfire]

I'm using imagemagick to resize images and any time I come across gif animations I get memory allocation errors or a 503. I have 8GB RAM free. Is there a config file where I need to increase memory?

[fmw42]

What is your IM version and platform? Have you checked your policy.xml file? That is where resources are allocated for Imagemagick.

[dethfire]

IM 6.7.2-7 CentOS 6

policy.xml is default

What attribute to increase?

[fmw42]

What does your policy.xml file show?

Code: Select all

convert -list resource

will tell you. Also see http://www.imagemagick.org/source/policy.xml

I am not an expert on this, but I suspect it is one of the memory, map or disk parameters.

[dethfire]

File Area Memory Map Disk Thread Time
-------------------------------------------------------------------------------
3072 4.1719GB 15.542GiB 31.083GiB unlimited 24 unlimited

Those feel like solid numbers and not which a single gif should trip. For CentOS 6 what is the latest version I can run?

[fmw42]

They look adequate to me. I do not run lInux, so cannot say what version of IM comes with it, but IM is at 6.9.8.3 (so over 250 versions old). I would be surprised if it was IM and not some communication issues? Are your file and folder permission adequate. Does IM run to convert normal image?

[fmw42]

Perhaps you have a hung animation. Try killing any IM convert processes. Also perhaps you have some dead animations that are hanging around in your MAGICK_TEMP directory or your /tmp directory. Check for any files with Imagemagick in the name. If they are too full, then there may not be enough room to finish an animation.

[snibgo]

I'm using imagemagick to resize images and any time I come across gif animations I get memory allocation errors or a 503.

What is your command?

How large is your input, in pixels? (How many frames? Width and height of each frame?)

[dethfire]

I'm running imagemagick via PHP. Here are some snippets of the code.


//#####################################
// resize image
//#####################################

// resize if width exceeds maximum allowed
if ($width > $attachmentMaxWidth)
{
$imagick = new Imagick();
$imagick->readImage($tempFullPath);
$imagick->resizeImage($attachmentMaxWidth, 0, Imagick::FILTER_LANCZOS, 1);
$imagick->writeImage($tempFullPath);
$imagick->clear();
$imagick->destroy();

// get new image size
list($width, $height) = getimagesize($tempFullPath);
}

// resize if height exceeds maximum allowed
if ($height > $attachmentMaxHeight)
{
$imagick = new Imagick();
$imagick->readImage($tempFullPath);
$imagick->resizeImage(0, $attachmentMaxHeight, Imagick::FILTER_LANCZOS, 1);
$imagick->writeImage($tempFullPath);
$imagick->clear();
$imagick->destroy();

// get new image size
list($width, $height) = getimagesize($tempFullPath);
}

//#####################################
// create thumbnail
//#####################################

// declare variable
$thumbSaved = '';

// define thumbpath
$thumbpath = $externalDataPath . '/attachments/' . $lastfolder . '/' . $dataId . '-' . $filehash . '.jpg';

// create blank file
if (!file_exists($thumbpath))
{
touch($thumbpath);
chmod($thumbpath, octdec($filePermission));
}

// save thumbnail if smaller than maximum width and height
if ($width <= $attachmentThumbnailDimensions AND $height <= $attachmentThumbnailDimensions)
{
// copy attachment
copy("$attachmentFullPath", "$thumbpath");

// thumbSaved
$thumbSaved = 'yes';
}

// if thumbnail not saved
if ($thumbSaved == '')
{
// define imagick
$imagick = new Imagick();
$imagick->readImage($attachmentFullPath);

// if image has a transparency
if ($imagick->getImageAlphaChannel())
{
// define thumbpathTemp
$thumbpathTemp = $temporaryImageDirectory . $filehash;

// create image
$image = new Imagick($attachmentFullPath);

// resize image
if ($width == $height)
{
$image->thumbnailImage($attachmentThumbnailDimensions, $attachmentThumbnailDimensions);
}
if ($width > $height)
{
$image->thumbnailImage($attachmentThumbnailDimensions, 0);
}
if ($width < $height)
{
$image->thumbnailImage(0, $attachmentThumbnailDimensions);
}

// save image
$image->writeImage($thumbpathTemp);
$image->clear();
$image->destroy();

// update attachment file
rename("$thumbpathTemp", "$thumbpath");

// thumbSaved
$thumbSaved = 'yes';
}

// if image is animated
if ($numberImages > 1)
{
// define thumbpathTemp
$thumbpathTemp = $temporaryImageDirectory . $filehash;

// create image
$image = new Imagick($attachmentFullPath);

// coalesce images
$image = $image->coalesceImages();

// resize image
foreach ($image as $frame)
{
if ($width == $height)
{
$frame->thumbnailImage($attachmentThumbnailDimensions, $attachmentThumbnailDimensions);
}
if ($width > $height)
{
$frame->thumbnailImage($attachmentThumbnailDimensions, 0);
}
if ($width < $height)
{
$frame->thumbnailImage(0, $attachmentThumbnailDimensions);
}
}

// deconstruct images
$image = $image->deconstructImages();

// save image
$image->writeImages($thumbpathTemp, true);
$image->clear();
$image->destroy();

// update attachment file
rename("$thumbpathTemp", "$thumbpath");

// thumbSaved
$thumbSaved = 'yes';
}
}

// if thumbnail not saved
if ($thumbSaved == '')
{
// resize image
$imagick->resizeImage($attachmentThumbnailDimensions, $attachmentThumbnailDimensions, Imagick::FILTER_QUADRATIC, .5, true);
$imagick->writeImage($thumbpath);
$imagick->clear();
$imagick->destroy();
}


A few example gif animations that cause the errors are:
https://upload.wikimedia.org/wikipedia/ ... wave3D.gif
http://animatedphysics.com/photons/anim ... on_mid.gif
http://www.spoonfedrelativity.com/web_i ... mentum.gif
https://upload.wikimedia.org/wikipedia/ ... 8-cell.gif

The exact error is:
memory allocation failed `.../public_html/tmp/ 9c1f51293667f29d3664c295cb02429f' @ error/gif.c/WriteGIFImage/1623

/tmp has 1.3G free space

[snibgo]

It is trying to write to ".../public_html/tmp/", and failing. I suppose there isn't enough space there.

[dethfire]

There is no disk space restriction on that folder and the disk has 100G free space. I can clear that folder and it still gives the error.

[dethfire]

Should I update to 6.9.8.3? Is that the latest version for CentOS 6?

[fmw42]

memory allocation failed `.../public_html/tmp/ 9c1f51293667f29d3664c295cb02429f'

I do not know if this is your error or just the way the message is presented, but there is a space between tmp/ and 9c....

If you have not quoted your path/file, the space may be a problem.

IM 6.8.9.3 is the latest IM version, but CentOS may not be providing that version. Thus you would need to check with CentOS for IM 6 or use the IM 7 binary that you can get at http://www.imagemagick.org/script/binary-releases.php

Can you test the animation resize in the command line and not via Imagick? Does it work there? If so, then it is an Imagick/PHP issue.

If you cannot do it directly in the command line, then try

<?php
exec("convert animated_photon_mid.gif -coalesce -resize 50% -layers optimize test.gif 2>&1",$out,$returnval);
foreach($out as $text)
{echo "$text<br>";}
?>

Does that work? If not then do you get any messages in your browsers window when it is run? You may need to put the full path to convert and to your gifs.

Have you checked directory permissions?