0guqd3oqmm0rliy2v2qjp_source.mp4 -

: Open iMovie, start a new "Movie" project, and select the clips from your library. You can then tap "Create Movie" to join them instantly.

: Search for "Video Editor" or "Photos" in your search bar. Start a "New video project," add your MP4 files to the library, and drag them into the storyboard to arrange them. 0guqd3oqmm0rliy2v2qjp_source.mp4

: You can create a blank project, upload your clips, and drag them onto individual pages on a timeline to string them together. : Open iMovie, start a new "Movie" project,

: Tap on the videos you want to merge, select the "Edit" or three-dot menu, and look for a "Create" or "Movie" option. This allows you to arrange multiple clips on a mobile timeline and add music. Start a "New video project," add your MP4

: A straightforward drag-and-drop tool that supports adding crossfade transitions between clips and handles different aspect ratios. Desktop Software (Built-in or Free)

If you are joining multiple clips, they ideally should have the same resolution and aspect ratio for the best final look. Merge MP4 Videos: Combine MP4 Files for Free Online - Adobe

To "put together a piece" using video files like 0guqd3oqmm0rliy2v2qjp_source.mp4 , you can use various free tools and methods depending on your device and desired complexity. Online Tools (Quickest & No Install)