: On a Windows PC, you can right-click the file and select Properties > Details to see the video codec and resolution .
If you tell me the subject (e.g., a vlog, a sports highlight, or a short film), I can give you more specific creative advice. MP4 files explained: How to open and use - Adobe
: If you're adding music, try to cut your clips on the "beat" of the song.
: Put the most interesting 2-3 seconds at the very beginning to grab attention.
: Offers professional-grade multi-track editing.
Depending on your device, start with one of these popular video editing tools: