No Tea's APNG Tools
Because it's not exactly intuitive creating APNGs for command briefing animations, head animations and other files, User:qweqwe321 created (completely vibe-coded, don't @ me) to convert and resize MP4 videos into APNGs, and another tool to reverse APNGs in bulk. (Reversed APNGs are my way to make head animations.) Windows-only, written in Python.

Download link: https://drive.google.com/file/d/1nwoIIMajAUBOg9j7wClkWhFvn7fZDD7Z/view?usp=sharing
Forum post: https://www.hard-light.net/forums/index.php?topic=99961.msg1922539#msg1922539