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How to Reduce Video File Size

This tutorial is relevant for the Windows version of Movavi Video Converter.
If you use Mac, please try our Mac OS video converter

As recently as ten years ago, computer hard drives had capacity of 20 GB or even less. Now, hard drives can hold several terabytes of data. But the amount of data we store on our computers is also increasing all the time. For example, many movies today are available in high quality and at Full HD resolution. These videos take up a lot of hard drive space, and if you want to store your video collection on your PC, even if you have a big hard drive, you really need to downsize your videos. And if you want to watch your favorite movies on a tablet or smartphone, video size reduction is absolutely essential.

Reducing the size of video files with Movavi Video Converter lets you save them in any popular format: AVI, MP4, MKV, MOV, WMV, and more. You can choose one of the ready-made presets for iPad, iPod, iPhone, Sony PlayStation, Xbox, smartphones (including Android Phones), tablets, and multimedia players. Thanks to the intuitive user interface, working with Movavi Video Converter is really easy even if you’re new to video processing.

Follow the simple instructions below to learn how to decrease video size in 5 easy steps:

Step 1: Install Movavi Video Converter on Your Computer

Download the installation file for Movavi Video Converter. As soon as you launch the downloaded file, the Installation Wizard window will open. Follow the on-screen instructions to install the software on your PC.

Step 2: Add Video File(s) to the Program

Step 2 - Add the file you want to change to Movavi video shrinker

Click the Add Video button in the upper left corner of the program interface to open the Open File dialog window. Choose one or more video files and click Open.

Step 3: Choose Your Preset and Specify Video Settings

Step 3 - Choose a format to compress your file size into

Expand the Convert to list and click Video and audio formats, then choose your desired video format from the list. It’s probably best to choose one of the most popular video formats, such as MP4, since it is widely supported on both PCs and mobile devices. If you want to change the video parameters as well, click the Settings button next to the list of presets and specify the desired settings: video and audio codecs, resolution, aspect ratio, frame rate, etc. If you need to really minimize video size, use an up-to-date video codec like H.264, since these provide higher video quality for smaller file sizes.

If you want the output video to play back on a portable device, select Devices. Find your device in the list and choose the appropriate preset for it. The converted video will have the optimal parameters for viewing on that device.

Step 4: Set the Size and Quality for the Output Video File

Step 4 - Set the size and quality for the end file

The size and quality of the output video are determined by the bitrate value: the higher the bitrate, the better the quality and the larger the video file size. If you want to reduce movie file size, you need to decrease its bitrate. Click the estimated size value of the output video in the Output column of the file list. This will open the size adjustment window. Drag the slider to adjust the output file size and click Apply when you're satisfied with the size and bitrate. Note that the file size is an approximation, so that the actual size of the converted video may differ slightly from the estimated value. You’ll need to do this for each video individually.

Step 5: Choose the Output Folder and Start the Conversion

Step 5 - Choose the folder Movavi file size reducer will put your video into and start conversion

By default, all converted files are saved to the Movavi Library folder on your C drive. If you want to specify another folder, click the Browse button at the right of the Destination field. Create a new folder or choose an existing one, and click OK.

To start the video conversion process, click the Convert button in the lower right corner of the program window. After the conversion is complete, the folder containing the converted video will open automatically (unless you disabled this option in the program settings).

Now you know how to reduce size of video files, so that they take up less space on your computer or mobile device. With Movavi Video Converter you can not only change video format and shrink file size, but also complete many other tasks. For example, you can use it for reducing video resolution. To learn more about working with the program, check the complete list of guides about video processing.

See what else Movavi Video Converter can do for you:

Movavi Video Converter

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  • Convert between 180+ formats
  • Save video for 200+ devices
  • Extract audio from video
  • Do basic editing tasks
  • Share files online
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Movavi Video Suite

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  • Edit 2D & 3D video, apply effects
  • Convert video, audio, and DVD
  • Encode for mobile devices
  • Capture screencasts or web
  • Play 2D video in 3D
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