I've been messing around with using OBS and emulators on my laptop to capture video and stream on Twitch (Controlissues is Twitch name).  Here's a video I made of me playing the first level of Gradius III for the SNES.  Played via RetroArch, using a PS2 controller connected via a PS2 to USB adapter to my laptop.  Recorded through OBS and made into a YouTube video.  I haven't messed with this kind of stuff a lot, but I may be doing more of the same kind of thing in the future.