Replying to Best video compressor today

Looking to compress some footage for instagram. Any easy ways to do so?
I currently use MPEG4 stream clip.

I find it a little sketchy, and I'm sure there are better ones today.

I'm looking for something that's free. Or is there a way to compress files when in final cut pro directly?

Thanks

Oh yeah, I know this should belong in media and arts, but I urgently need some responses.