Shotcut

Shotcut is a free and open-source, cross-platform video, audio, and image editing program for FreeBSD,[5] Linux, macOS and Windows.

It uses a timeline for non-linear video editing of multiple tracks that may be composed of various file formats.

Scrubbing and transport control are assisted by OpenGL GPU-based processing and a number of video and audio filters are available.

[10][11] The output options for the 2017 version included Apple ProRes, HDV, DVD, Flash, H.264, GIF animation, Ogg-Vorbis, WebM, and WMV.

He wanted to make something to exercise the new cross-platform capabilities of MLT, especially in conjunction with the WebVfx and Movit plugins.