Legacy ImageMagick Discussions Archive

Embarrassing...
should be Sorry guys...

Hi,
I'm trying to create an animated gif with shadow from any animated gif. I have already succeeded with that, but from some reason I cannot get it to work anymore - it simply gets stuck.

For example:
convert "http://33.media.tumblr.com/d7a91abd8134f6bde1e8784e65ef6f3b/tumblr_n2ea6sNWHZ1rapzjmo1 ...

Great - I got all I needed. Thanks for the great support.

Thanks, but I am still missing the way to flatten each frame - can you please help me with that as well?
Many thanks.

Thanks a lot guys, this is really helpful.
One more thing I've noticed - following Fred's earlier suggestion for softening the shadow, I tried adding
'-background white -compose over -flatten'
However if I put it at the end, the animation stops and it becomes a regular image... Where exactly ...

So you are saying that removing the '-trim' should give me a bigger but working gif? I've tried it, it looks pretty much the same (the size does not change, but the black background and flickering remains)

I am using version 6.9.2-5 which I have built on Ubuntu 14.04

Hi,
One more thing - when I use the code you've posted with another gif I get a very weird behavior - flickering and offset. What can be the problem with that?
Original image:
http://www.broadheath.coventry.sch.uk/wp-content/uploads/2013/09/superman1.gif

My result:
https://s3-eu-west-1.amazonaws ...

I get it, thanks. I did not finish playing with the offset, I just bumped into this problem and wanted to solve it first.
Again, many thanks!

Hi,
Thank you very much for a great answer. It was VERY helpful and extensive.
One thing that I do not understand in the result is that the shadow's transparency seems weird - in the part of the original image it looks ok, and in the extended part it does not. Look here, for example:
https://s3-eu ...

Hi,
Yes, this is exactly what I want - to disconnect the dependency on the size. Any help will be highly appreciated.

Thanks - but this is the thing actually. I have looked there prior to posting - I am seeking a way to do this without the size dependency, as I do not know on which images this action will be applied...

I have posted the entire code for both images - the first in my original post, and the second in my reply. Please let me know if this is not good enough...
Just run the second piece of code and you will see the result.

I am using version 6.9.2-5 which I have built on Ubuntu 14.04, but I'm pretty sure it is a matter of my understanding and not a problem with the version.
I want the shadow to be projected to the right bottom, pretty much like it is in the code I've posted. My problem is that on other image it looks ...

Hi,
I've been struggling with creating a non-linear shadow for a transparent gif. I would like it's shape to look a little like this, which was made for png:
http://www.imagemagick.org/Usage/distorts/standing_shadow.jpg

My main problem seems to be that the shadow is not at the same place it ...