Advice Needed: Bulk Convert MPEG-4 Videos to MP4 for Dovetail Migration

Do any of y'all have advice on converting MPEG-4 videos to .mp4 in bulk that is safe/secure? Or is this a format that could be supported in Dovetail in the future? I have an old project from EnjoyHQ that I want to migrate over to Dovetail, but their video export is in MPEG-4 format (not .m4p like their documentation claims) and it doesn't play nice with Dovetail. I'm gonna ask my IT team for some help too, but wanted to flag it here cause it could make things hard for people transitioning away from other tools like EnjoyHQ.