export an image from FilterForge each time a parameter changes

sassembla, welcome to the forums!

It is possible in Filter Forge Studio Edition, without scripts. In Filter Forge terminology this is called "animation". You also need to have the basic understanding of how filters are constructed.

Let's assume you take this filter and want to animate the number of bricks, so that the first image has a few bricks in a row, the next one has more bricks, the next one even more, and so on – 5 images in total.

The number of bricks in this particular filter is controlled by the Brick Repeat parameter. Open the filter in Filter Editor, find the Brick Repeat control and replace it by a Current Frame control. You also need to define the number of frames – 5 in your case – by adding a Frame Count component and setting its value to 5.

Save your changes to the filter, close Filter Editor and click File > Render Animation on the main program menu. Set the output to Image Sequence, since you want images and not a video file.

HTH

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sassembla wrote: If a file with the same name already exists, it is overwritten with the same file name.

This is not possible in Filter Forge but i believe it's not very difficult to set up with a third-party tool. For example, a script that monitors a specific folder, and when a new image file (generated by FF) shows up in this folder, the script automatically renames it to MYIMAGE.JPG or whatever.