Thread:GoatRage/@comment-24142275-20131207150338/@comment-24245027-20140228154840

I don't believe the problem has anything to do with speed or size of the file. The fact the output is a valid PNG file suggests there is something else going on to me (although I'm no PNG format expert). I had wondered if the developers had changed something up in 1 of the updates to make it more difficult than it previously was.

The .ab file is just a thinly wrapped tar file. You can use Android Backup Extractor (http://sourceforge.net/projects/adbextractor) to extract it to a tar.gz file and from there most zip application will extract the contents for you. However as I've said in previous posts, there seemed to be missing content when you do this and most of the images are packed together into .PAK files so it doesn't help you much. As far as I'm aware there is no difference between running my app on the .ab file and running it against .pak files contained within it although it's been such a long time since I looked at it that I guess it might be a test I overlooked.