ffmpeg-api

The Restreamer is a complete streaming server solution for self-hosting. It has a visually appealing user interface and no ongoing license costs. Upload your live stream to YouTube, Twitch, Facebook, Vimeo, or other streaming solutions like Wowza. Receive video data from OBS and publish it with the RTMP and SRT server.

A Swift wrapper for the FFmpeg API

A dynamic library written in C++ with API for most of the main tasks with FFmpeg. Much faster for your GUI interfaces than using processes.