Source Filmmaker

Source Filmmaker

Is There A way To Export An Image Sequence With Transparent Background
So I'm making FPS animations and exporting them as images to make sprites in UE4. One step in the workflow is erasing the solid color background (I use colorvoid map). In blender when exporting it keeps the background transparent. I would like to do that with sfm as it is more user friendly to me. I've checked workshop and online and can't find anything on it yet.

How can I export my animation as an image sequence with an alpha channel so it's just the models in the scene? That would save me alot of time, thanks.
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Showing 1-2 of 2 comments
Capt Fuzzy Sep 22, 2021 @ 10:55pm 
Have you tried using a green screen or blue screen process (chroma keying)?
If you don't know how to do it, I have this little guide:
https://steamcommunity.com/sharedfiles/filedetails/?id=1498187590
Last edited by Capt Fuzzy; Sep 22, 2021 @ 10:56pm
The King of Bees Sep 22, 2021 @ 11:28pm 
Originally posted by Capt Fuzzy:
Have you tried using a green screen or blue screen process (chroma keying)?
If you don't know how to do it, I have this little guide:
https://steamcommunity.com/sharedfiles/filedetails/?id=1498187590

Yes I have tried with green screen. I use a map that's an all green (or any color) skybox.

My workflow is: SFM > GIMP > Aseprite > UE4.
In GIMP, I use fuzzy select with an alpha channel on all my layers/frames to delete the green background one layer at a time. Then I make that into a gif animation and put it into aseprite and make the spritesheet from there. It works but if I didn't have to delete the greenscreen on every layer and just have a transparent background right out of SFM that would be mega timesaving. I found that a black background works best because GIMP still leaves alot of green pixels outlining the model when I used a green background which took some extra work

Your guide is very good tho and I saved it for if I need more info on the chroma keying route so thanks for that. I was just hoping to cut down on post processing after SFM is all
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Date Posted: Sep 22, 2021 @ 9:11pm
Posts: 2