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Coalesce adds border to animated gif
Posted: 2013-08-08T08:09:53-07:00
by thomasz
Image:
http://img3.fotos-hochladen.net/uploads ... qceyar.gif
Command: convert 66901gqceyar.gif -coalesce 66901gqceyar_coalesced.gif
After "coalesce" the image has a black border on the right and the bottom side.
Re: Coalesce adds border to animated gif
Posted: 2013-08-08T08:40:18-07:00
by glennrp
The image has a "page geometry" of 300x300 but the individual images are mostly 299x299, some
smaller. So the one-pixel black border on the right and bottom is the correct behavior. In terms
of the GIF specification, the "logical screen size" is 300x300 and the "image sizes" are 299x299
or smaller.
Re: Coalesce adds border to animated gif
Posted: 2013-08-09T01:58:47-07:00
by thomasz
This still looks like a bug to me. According to the documentation "coalesce" overlays each image in an image sequence to reproduce the look of an animation at each point in the animation sequence. Therefore there shouldn't be any visible differences between the original and the coalesced version.
