mp4tools

Install command: 
brew install --cask mp4tools

Name: MP4tools

Create and edit MP4 videos

https://www.emmgunn.com/mp4tools-home/

Development: Pull requests

Cask JSON API: /api/cask/mp4tools.json

Cask code: mp4tools.rb on GitHub

Current version: 3.7.2

Requirements: macOS >= 10.15

Analytics:

Installs (30 days)
mp4tools 23
Installs (90 days)
mp4tools 94
Installs (365 days)
mp4tools 410