I am using the animation tool Synfig to export a sequence of .png files. These are in the following format: C1.0000.png , C1.0001.png, C1.0002.png and so on.
I want to convert these to a spritesheet (i.e. append all of them together) however, I also need the same animations but flipped.
Here's where I have the problem. When using the following syntax:
convert C1.*.png -flop C1right.*.png
I don't get a sequence similar to what I had before. (C1right.0000.png, C1right.0001.png etc) but instead C1right.-0.png, C1right.-1.png, etc.
This on its own isn't that bad, but because the +append command sorts the images alphabetically and not numerically, I end up with a sequence where not image 2 follows image 1 but image 11 follows image 1, with 2 ending up after 19.
Is there any way to keep the original file name structure? Or is there a way to ensure that the +append sorts the files numerically?