synfig

Open-source 2D animation and vector graphics renderer

brewmacoslinux

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Command-line renderer

synfig

Render a Synfig project file to video output$ synfig -o output.mp4 project.sifz

Render specific frame range from animation$ synfig -s 10 -e 100 -o frame_%04d.png project.sifz

Export animation as image sequence with custom quality$ synfig --quality 9 -o output_%05d.png animation.sifz