Fraps
Fraps is payware but it's the easiest to set up and use. It records both the video and the sound (important). OBS is NOT easy to setup and use. With Fraps you setup to run at 29.95 fps and full screen. You then assign a key (I use 'Insert' key) to toggle 'Start/Stop' recording. You can fly and record 'live' or you can do FS9/FSX 'Instant Replay' and record that (allows change of views with 'Shift+S' key). You can edit (HUGE *.avi clips - 2 min=4 Gb) with Movie Maker to reduce size. From Movie Maker you save FINISHED VIDEO to hard drive then upload to YouTube. I bought 'older' version (11) of Sony Vegas ($49) so I can do more EDITS (zoom, etc) than Movie Maker can do. Using FRAPS 'Free' version puts a watermark on video. Fraps records at 29.95 fps but plays back at 60 fps and at HD (1080x720). The other program I use is FSRecorder. It is able to 'Render' replay video that looks good even if you only get 25 fps in Sim. What 'looks' complicated is 'easy' - once you learn how to do it. I have 100's of video on YouTube. Some good some not so good (5 yrs old). Key 'Napamule YouTube 2017' in Google, then click on any video and when there click on my name (Chuck B) then click on 'Videos' on my home page (there are lots of 'Chuck Backus' on YouTube) to watch latest-to-oldest videos. You click on video, watch, then use 'BACK ARROW' (up top by URL) to return to list of videos.
Chuck B
Napamule