How does TikTok/IG build video filters/story editor?

Question

Is there open source software that they use to start with, or does creating filters/video effects/story editors require to be built from scratch? If so, is there a special skill set required for this and does it require a large team or can it be done by a few people?

fancythat · Accepted Answer

You could use MLT (https://www.mltframework.org/) as programmable video editor it works perfectly for this scenario.