TSDuck: Open-source toolkit for MPEG-TS analysis and manipulation

In my copious free time, I've wanted to go looking at FTA satellites to see if there's data in the TS that I can't ascribe to any known programming. This seems like an ideal tool to start with.

Good old MPEG-TS (together with its cousing MPEG-PS)

If anyone is not familiar with it, the rabbit hole goes deep

This is amazing. I have absolutely no use for it personally, but it's still seriously impressive what all it can do. Whoever works on this is obviously deeply involved with television broadcasting professionally... just having access to all the expensive standards necessary to implement these things is a feat all by itself.