[header] How to edit videos on the iphone [title] Open the photos application on your iphone. [title] Tap on the video you want to edit, or trim. [step] Trimming your video will allow you to cut out and remove any unnecessary or redundant portions of the video. 
[title] Drag the left and right arrows at the top of the video to choose the portion of the video you want to keep, or save. [title] Tap on " trim " at the upper right corner of your iphone.