Note, that the demonstrated feature is result of work of our paid full-time developer. You can help us to continue full-time development by contributing to our fundraising campaign - http://www.synfig.org/cms/fundraising
Synfig Studio is a free and open-source 2D animation software
Synfig Studio is a free and open-source 2D animation software, designed
as powerful industrial-strength solution for creating film-quality
animation using a vector and bitmap artwork. It eliminates the need to
create animation frame-by frame, allowing you to produce 2D animation
of a higher quality with fewer people and resources. Synfig Studio is
available for Windows, Linux and MacOS X.