Though you can’t crop a video on your Android tablet in the sense that you can’t change its resolution, you can snip off the head or tail from the recording. This process is known as trimming the video. It works like this:
Display the video in the Gallery.
Do not play the video; just have it loitering on the screen.
Videos in an album are flagged with the Play icon.
Choose the Trim command.
Touch the Action Overflow or Menu icon to find the Trim command. In some versions of the Gallery app, the Trim icon appears on the screen, similar to the one shown in the margin. If you can’t see the icon, touch the screen. If it still doesn’t show up, the video is being shared from another source and cannot be edited.
Adjust the video’s start and end points.
This is how to trim a typical video: Adjust the Start and End markers to trim the video’s length. Touch the Play button on the screen to preview how the shortened video looks. Adjust the Start and End markers further, if needed.
You cannot trim a video so tiny that it’s less than one second in duration.
Touch the Save or Done button to save the edited video.
On some tablets, you may be prompted to give the trimmed video a new name. Otherwise, your shortened video is automatically saved under a new name and presented as its own item in the Gallery.