transitive-bullshit/ffmpeg-concat is a JavaScript project that joins multiple videos with transition effects. It uses FFmpeg and GL Transitions, and it is offered as both a Node.js module and a CLI. FACTS gives no latest release version, so this is not an article about the changes in a specific version. What is covered here is the functionality recorded in the repository.
Input videos can be specified by path or URL, and the transition effect and its duration can be set before the result is written to an MP4 file. The purpose is to automate video joining and transition handling through the Node.js API or the CLI. The README summary states that it runs on Linux, macOS and Windows. The primary language of the repository is JavaScript, and it has 989 stars. So the core of this project is not the full range of video editing features, but the work of joining multiple inputs into a single video with a chosen transition effect.
However, FACTS presents no license for the repository and no latest release information either. The conditions required for redistribution or commercial use cannot be confirmed from this material alone. No figures are given for judging performance or the quality of the output. Automated joining and transitions are confirmed, but whether the tool can be included in a distribution and whether it fits real work has to be checked separately.