[Fixed] How to Crop MP4 Videos on PC/Mac

Posted by Adam Gorden on Jul 3, 2019 10:10 AM

crop mp4 videoSometimes when you shoot a video in MP4 format and later you find that there are black edges on your movie, what would you do? If you get some knowledge about video editing, you probably know that this problem can be easily fixed by cropping it with a useful tool.

There are so many video editing programs in the current market that claims to be the best one, and you may be wondering which one is actually the best video cropping tool. Well, in this guide, we just show you two top and easy methods to crop MP4 video on your Mac or PC efficiently.

Method 1. Crop MP4 Video with TunesKit Video Cropper
Method 2. Crop MP4 Video with Online Tool

Part 1. How to Crop MP4 Video on PC/Mac with TunesKit Video Cutter

Although it usually used as a lossless video cutter, TunesKit Video Cutter also works well in video cropping. Not only MP4 video format, it supports tons of other video file formats including MOV, AVI, WMV, M4V, MPG, MPEG, 3G2, 3GP, ASF, RM, RMVB, DAT, FLV, MKV, VOB, OGV and so forth. Besides, you can also save and export the edited video file onto various portable devices such as iPhone, Galaxy, Windows Phone, Xbox, PS4, smart TV, etc.

TunesKit program provides you a real-time preview function to crop your MP4 video, so that you see any change you made in the preview windows. Furthermore, this video editor can do more than just cropping videos; users can also add background music to the video, apply watermarks, subtitles, special effects, trim and rotate the video clip, etc. The program is available for Windows and Mac systems, so you can use it to crop MP4 video files on PC or Mac as you like.

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Cropping MP4 video file with TunesKit is very easy and users can finish it in just 4 steps. Now just follow the simple guide below.

Step 1 Open TunesKit and add MP4 file

add video

Before getting started, you need to download and install TunesKit Video Cutter program on your computer. After that, just double click the icon and launch TunesKit. Next drag and drop the MP4 file you'd like to crop to the software, or click the "Open" button to browse your target MP4 file from the local folder of your computer.

Step 2Crop MP4 video in TunesKit

crop mp4 video on win

Once the file is imported successfully, you can then click the Edit icon editor icon and here comes a editing window. There are six options on the top menu bar, press the "Adjust" one. You will see two preview windows. You can move the white lines to zoom in or out the original video file in left window and then see the effect in the right window. Alternatively, you can simply enter the accurate value for the width and height of the video file in the section of "CropArea Size". Afterwards, click the OK button to escape the window.

Step 3Select an output mode

set output

Then you need to choose an output format in this step. Select the Encoding Mode here and you're also allowed to change the file format, quality and codecs. And then choose an output video format or device according to your needs. Hit the OK button to close this popup window.

Step 4Start to crop and save the video

convert video

After all settings are ready, you can now click the Start button to ask TunesKit to crop the MP4 video file for you. A few seconds later, you can find your new cropped video file from the destination folder.

Part 2. How to Crop MP4 Free with Online Tool

Another easy solution that you can use to crop MP4 video for free is to take advantage of some online video cropping tools. There are several such tools on the Internet such as Online Video Cutter, Ezgif.com, Clideo, etc. After tested some of them, Online Video Cutter is recommended here because of its speed and simplicity. The following is the quick instruction to show you how to use crop MP4 video online on the computer.

crop mp4 vide online

Step 1 Upload MP4 video file

First of all, please visit the official site of Online Video Cutter on your web browser. Then click the Choose file button and import the MP4 video you want to crop. Click the small dropdown triangle button and it offers you opportunities to upload video from Dropbox, Google Drive or online.

Step 2 Crop the MP4 video

Then you'll see your MP4 video in the preview window. You can now move the blue frame to crop the MP4 file based on your requirements. Or click the Crop icon on the left to choose a resolution ratio you want. There are several ratios for your reference like 4:3 for classic TV, 4:5 for Instagram, 16:9 for widescreen TV, etc.

Step 3Save the cropped MP4 video

After set all the preferences, now click the Save button on the lower right corner. Wait a while until the processing is done. Afterward, you can click the Download button to export the new video to your computer or transfer it to the Dropbox or Google Drive.

The Bottom Line

So these two methods can both help you crop MP4 video on Windows or Mac computer and each has its pros and cons. You can try them both and find a better option. The online tool doesn't require you to install any software, yet its success rate has much relation to the Internet connection speed and it might be unstable sometimes. TunesKit Video Cutter is chargeable, yet it will guarantee a good user experience with high performance and high output quality. So you can give it a try if you care more about the quality.

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is an experienced writer of TunesKit who is obsessed about tech, movie and software.

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