How to Reduce the Size of a MP4 Video?

Summary: You may need to reduce the size of MP4 for different reasons, such as E-mailing video clips to a friend, saving the hard disk space, sharing videos online, playing it on mobile phones, ect. No matter for what reason, this article can teach you the easiest way to compress MP4 files. 

Many video sharing size like YouTube, Vimeo and FaceBook have limitation on video size. So when you want to upload a MP4 video to YouTube, etc, you'd make sure your MP4 video is not loner than 15 minutes long. And the size you upload to YouTube can't beyond 128GB totally. If your MP4 size is to large, you may want to reduce the size of your MP4 files.


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To resize MP4 files, you need a reliable MP4 resizer for help. So here, Pavtube Video Converter Ultimate is recommended. It can enables you to resize your MP4 files for smaller size while maintaining relatively high visual quality.

  • Very simple and clean interface;
  • Easily reduce the size of MP4video files without any quality loss.
  • Enables you to adjust the video settings like bit rate, sample rate and more.
  • One-click to convert MP4 video files to other formats.
  • Provides basic video editing functions like trim.
  • Supported OS: Windows 10/8/7/XP/Vista.


Other Download:

- Pavtube old official address:
- Cnet Download:


For Mac users, iMedia Converter for Mac is a helpful app to shrink MP4 video size on Mac.


Now, let me show you how to resize MP4 videos step by step.


Step 1: Load MP4 videos


Click "Files" icon to load your destination file from desk or folders. You can import more than one file, just press "Ctrl" when selecting the MP4 files. Or just drag and drop all MP4 videos you need to compress into this program. Batch conversion is supported here.


add video


Step 2: Choose output format


Just open drop-down list and choose desired output format. For common devices, MP4 is the best choices.


Step 3: Start reducing the size of MP4


Click “Setting” button of the program and a window will pop up. From Size(pix) drop-down list, select an appropriate parameter or enter a desire value for output file. Or choose lower value from the drop-down list of the right side of “Bitrate” to decrease MP4 Bitrate in order to resize your MP4. Please remind the MP4 size is more based on bitrate not resolution.




Tip: Just click “Edit” to find trim function then you can get the very part you want from your whole video. Besides trimming, cropping, adding watermark, adjusting special effect, are well supported as well.


Step 4: Save the new MP4 file


When you're satisfied with the outcome, choose a suitable output format if you want to convert the MP4 file to other format. Then hit "Convert" to start exporting the new file.


Now, you can upload the smaller MP4 video to YouTube. You also can compress your MKV, AVI, FLV, etc video in this way.


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