Question

I have >2000 images from a webcam stream (for a time-lapse video), I need to delete all incomplete & corrupted images, before passing them to a php-gd script that edits them for the final video.

Is it possible to detect corrupted files with imagemagick or some other tool? If i try to open the corrupted image with feh it displays libpng error: Read Error in console

Thanks in advance!

UPDATE: It seems that the suggested identify method accepts the bad images in my case. Here is an example of a corrupted one http://imgur.com/YcB9n

Answer 1

Try ImageMagick’s identify command. From the man page:

Identify describes the format and
characteristics of one or more image
files. It will also report if an image
is incomplete or corrupt.

Example:

$ identify foo.png
identify: NotAPNGImageFile (foo.png).

$ echo $?
1

An alternative, is to use PIL (Python Imaging Library):

from PIL import Image

im = Image.open("foo.png")
im.verify()

From the documentation:

im.verify()

Attempts to determine if the file is
broken, without actually decoding the
image data. If this method finds any
problems, it raises suitable
exceptions. This method only works on
a newly opened image; if the image has
already been loaded, the result is
undefined. Also, if you need to load
the image after using this method, you
must reopen the image file.