Bad journalism has nothing to do with this. Literal first paragraph of the article:

You may never have heard of FFmpeg, but you’ve used it. This open source program’s robust multimedia framework is used to process video and audio media files and streams across numerous platforms and devices. It provides tools and libraries for format conversion, aka transcoding, playback, editing, streaming, and post-production effects for both audio and video media.

If you weren’t paying attention until someone pointed out your error, just say that. We won’t crucify you.