If you are using the built-in console recording, share factory or Xbox's editing. Another overlooked video editor is Youtube's editing. Limited but still able to clip videos and has slo-mo options etc. www.youtube.com/editor
Though you mentioned recording, however I don't use PS4's recording. I use a capture card and Sony Vegas+Adobe AE.
I use Elgato for recording and Videopad for editing. And everyone knows my vids are da bestest. ( ͡° ͜ʖ ͡°)