Download this video cropper - Joyoshare Media Cutter, from the official website. After a quick installation, get it launched and have a click on "Open" button to add a video file from your local folder. You can also import it by simply dragging and dropping.
When the loading process is complete, your video will be displayed in the program and play automatically. Now, press on the "Format" and appoint "Encoding mode" to crop a video for you. It's needful to confirm an output format in advance. You can besides customize quality, codec, frame rate, resolution, etc. from the access of a selected format.
Once you close the format window, you'll go back to the home screen, where you can cut any unwanted segments out. Then it's your turn to find and hit the "Edit"
button to reach "Adjust" > "Crop Area Size". By default, there is a white cropping box that lets you frame the video area you want. You can zoom in and out by dragging and dropping directly. Or set the width and height as desired in the corresponding section below. To better adjust the video, choose an appropriate aspect ratio to finish.
Here you're able to click on "Start" option in the main interface to render your cropped video. Wait for the progress bar to complete, then check your local video under the target output path.