In X-Plane 11 you can save and share your flight in a few different ways: screenshots, movies, situation files, and replay files.
Replay and situation files can only be used in X-Plane, but movies and screenshots can be shared however you’d like. By default, X-Plane saves all these files in the Output folder. Situations and replays are powerful tools if you want to practice the same flight over and over, or review a flight from different angles.
To see all these features in action, check out this video on saving and loading flights in X-Plane 11.