Trim/cut/split MP4: Move the mouse on the edge of Timeline, and drag to cut any length as you like when you see the double arrow.Ĭrop MP4: Click Crop option in the MP4 video editing panel, and adjust the cropping frame in the left Original Preview window. When you download and install the MP4 video editor software, you can launch the program, and add a MP4 file that you want to edit via this MP4 editor.Īfter you import MP4 file to the program, you can edit the added video in the editing interface with the wonderful functions.Ĭombine/merge MP4 files: From the Timeline, you can freely combine MP4 files by copying, pasting and deleting the files.