On Windows 11 Home, the simplest free option in the provided material is Microsoft Clipchamp, which is the official Microsoft video editor and comes preinstalled on Windows 11 devices.
A straightforward way to keep only the 20-minute section:
- Open Clipchamp from the Start menu or search for Clipchamp on the taskbar.
- Import the VHS video file from the USB drive.
- Add the video to the timeline.
- Move the seeker to the point where the wanted 20-minute section starts.
- Click the split button (scissors icon), or press S.
- Move the seeker to where that section ends.
- Click split again.
- Click the unwanted parts before and after the section, then press Delete or Backspace.
- The remaining clip on the timeline is the 20-minute segment to keep.
If only the beginning or end needs shortening, Clipchamp also supports simple trimming:
- Click the clip so it is highlighted.
- Drag the handles at either end left or right to shorten or lengthen it.
- If too much is trimmed, drag the handle back to recover the footage.
If only a very basic cut is needed, the Photos app can trim a video too:
- Open the video in Photos.
- Select Trim (Ctrl + E).
- Adjust the start and end sliders.
- Select Save as Copy to keep the original file unchanged.
For a long 4-hour video where the wanted section is in the middle, Clipchamp is the better fit because it lets the video be split and the unwanted sections deleted.