Live Compositor ~ Realtime Video & Audio Mixing


Live Compositor is an engine for applying effects to videos and for combining multiple videos together. On a very basic level, it is an application which exposes an HTTP API. The API allows you to specify where to get input videos, and how to modify and compose them together. The resulting outputs can then be written to a file or streamed to a separate service.

compositor.live
compositor.live/playground
github.com/software-mansion/live-compositor

FFmpeg ~ Open Source Audio Video Toolset


A complete, cross-platform solution to record, convert and stream audio and video. FFmpeg is the leading multimedia framework, able to decode, encode, transcode, mux, demux, stream, filter and play pretty much anything that humans and machines have created. It supports the most obscure ancient formats up to the cutting edge. No matter if they were designed by some standards committee, the community or a corporation. It is also highly portable: FFmpeg compiles, runs, and passes our testing infrastructure FATE across Linux, Mac OS X, Microsoft Windows, the BSDs, Solaris, etc. under a wide variety of build environments, machine architectures, and configurations.

ffmpeg.org

Frontends:

Resources: