[wp-trac] [WordPress Trac] #45982: PDF thumbnails have a default black background

[WordPress Trac]

#45982: PDF thumbnails have a default black background
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 Reporter:  nebrekab      |       Owner:  (none)
     Type:  defect (bug)  |      Status:  new
 Priority:  normal        |   Milestone:  Awaiting Review
Component:  Media         |     Version:  5.0.3
 Severity:  normal        |  Resolution:
 Keywords:                |     Focuses:
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Changes (by joostdekeijzer):

 * Attachment "image-library-load-filters.diff" added.

 Hi, I have the same issue.  The workaround from #39216 does not work for
 me, I need to `setImageAlphaChannel`. I'm using PHP7.2 with ImageMagick
 6.9.10 and ghostscript 9.5.  I've attached a patch that adds filters to
 both the Imagick class and the GD class both passing the `$this->image`
 object as a reference. Then, in a plugin, you can make the fix that works
 for you.  Would that be a solution?

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Ticket URL: <https://core.trac.wordpress.org/ticket/45982>
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