Thank you, this helped me a lot. I know use an if statement in the template to check if it is a gif file and if then use the original image.
<?php if (exif_imagetype($image['url']) != IMAGETYPE_GIF) { ?>
<img src="<?php echo $image['url']; ?>" alt="<?php echo $image['alt']; ?>" />
<?php } else { ?>
<img src="<?php echo $image['sizes']['thumbnail']; ?>" alt="<?php echo $image['alt']; ?>" />
<?php } ?>
