For larger files or more precise editing without re-encoding (which preserves quality), these programs are recommended:

If you don't want to install software, these web-based tools allow you to upload your file and select the "piece" you want to keep:

: Right-click the file, select Open with , and choose Photos or Movies & TV . Most versions have a simple "Trim" icon (pencil symbol) that lets you save a new copy of just the "piece" you want.

: Useful for more complex "pieces" where you might want to duplicate scenes or add text before exporting. Desktop Software (More Control)

: Open the file in QuickTime Player , go to Edit > Trim , and adjust the yellow handles to select your desired segment.

: Ideal for simple "Append" and "Cut" operations without needing to re-render the entire video. Basic Built-in Options

: A professional-grade free editor. To make a piece, drag your clip to the timeline, use the "Blade" tool to cut, and right-click to "make compound clip" or export the selection.