I have a couple of questions regarding the importing of images via a LST file.
Draw my animation out using PAP (http://www.plasticanimationpaper.dk/), which is simular to Pencil but only b/w. I’ve been playing with if for a bit and am very happy with the output. I can create a foreground, midgrounds, and background layers. I export each layer as a BMP sequence and save it to a folder.
I then use Potrace (http://potrace.sourceforge.net/) to batch trace the BMP files and save each frame as an SVG file. If I did it correctly, then each frame is traced in black and filled with the color I selected in Potrace and all other areas of the frame are transparent.
I then use InkscapeBatch (http://inkscapebatch.sourceforge.net/Homepage) that batch processes SVGs into PNGs and retains the transparency. It can also scale and change foreground/background color the same way Potrace can. I am left with a series of frame sequences, which when placed in layers, can be rendered into a video file. I’ve tried this using Blender’s VSE (video sequence editor). It works okay and I’ve tested it out with a 5 second animation. It is a bit clunky, though.
I am beginning to learn that this last step can be done in Synfig, with much better control and results, using LST files.
1: Can I layer "Import Image Layer"s so they stack foreground, midgrounds, and backgrounds, and therefore take advantage of the alpha channel in the PNGs?
2: Can I skip the PNGs and import the SVGs in a LST file? This would be preferable and would allow the option on “tweeking” the frames. I understand they may need to be converted to a SIF file? If so, can they be batch converted? I might be getting ahead of myself there.
3: Does each respective LST file reside in the directory of the image files? I believe so, but I want to make sure.
4: Knowing my intent, are there any ideas or methods that I might take advantage of in Synfig? I used Blender a fair amount and have made a number of short animations, but I am missing the drawing part in animation.