
Description: MKVtools is a free, open-source set of utilities for manipulating Matroska (MKV) media container files. It allows joining and splitting MKV files, editing headers and attachments, muxing/demuxing tracks, and more.
Type: Open Source Test Automation Framework
Founded: 2011
Primary Use: Mobile app testing automation
Supported Platforms: iOS, Android, Windows

Description: ffmpegX is a graphical front-end for the popular open-source ffmpeg media conversion tool. It provides an intuitive interface for converting, editing, and manipulating audio and video files easily.
Type: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API