Not that I'm aware of. OBS composites (helps compile/create the recording, it isn't a video editor)
There are multiple recording output format options (each with own Pro's & Con's). You'll see common suggestion is to record to MKV
Then you'll want a video editor, and there are lots of free and pay options, just depends on how sophisticated your needs are as to which might suit you better. As you are using free OBS s/w, doing a Internet search on free video editors will give you a number of articles/videos on options