compress video with iskysoft
Best M4V Compressor - UniConverter
  • Best M4V compressor to reduce M4V file size without losing quality.
  • Compress M4V video by changing video size, resolution, bit rate, quality, etc.
  • Convert video in 150+ formats, like MP4, M4V, MOV, MKV, WMV, AVI, MPEG, etc.
  • Trim, crop, rotate video with the built-in editor. You can also apply effects, watermark and more.
  • Transfer video to iPhone, iPad and Android phone/tablets.
  • More: burn DVD/CD, record screen, make GIF images, fix video metadata, etc.

Quick Ways to Compress M4V Files on Mac and Windows PC

by Brian Fisher

No matter how advanced or large sized system you have, there is always a struggle with the storage space. So if you have a number of M4V files on your PC that you are finding difficult to accommodate, compressing can be a smart solution. To compress M4V file in good quality, need for a professional tool arises. To help you with the task, discussed below is the best tool to compress M4V file on Windows and Mac.

Part 1. How to Compress M4V in a Quickly Way

A myriad of options is available when it comes to compression tool. But if you want your M4V files to be resized in the best manner, UniConverter is the software to install. Using this power-packed video-toolbox, M4V files can be compressed in very high quality and at super fast speed. Bitrate, resolution, quality, and other parameters can be changed using the tool and the unwanted file parts can be trimmed to attain shorter file size. Additional functions of the software include videos conversion, video download, video recording, video transfer, disc burning, and others.

Get the Best M4V Compressor:

  • Compress M4V or other formats without losing quality (batch process supported).
  • Preview function to check the compress M4V video before confirm.
  • Allow to adjust parameters like bit rate, resolution, quality, size, encoder and others to resize M4V file.
  • Download video from video streaming sites including YouTube, Vevo, Dailymotion, and other 1000+ sites.
  • Edit video with the powerful built-in editor.
  • Burn DVD/CD, record video, make GIF images, etc.
  • Software is compatible with Windows and Mac system

Guide to Reduce M4V File Size using UniConverter

Step 1. Add M4V video to M4V Compressor

Run UniConverter after it is successfully installed on your Mac/PC. Click on the Video Compress button from the Toolbox section. To add M4V local video, click on the + sign.

Add M4V video

Step 2. Select file parameters for M4V compression

At the new Compress Video window, you need to move the slider to adjust the compression percentage needed and accordingly, the file parameters will change. If specific parameters are required, you can edit them manually.

m4v compression parameters

Step 3: Preview and compress M4V file

Clicking on the Preview button will facilitate checking the file changes before the process. Click on the Compress button and your M4V file will be reduced in size and will be saved at the location selected at Save file: section.

compress M4V file

Part 2. How to Compress M4V Files in Batch

Step 1: Load M4V files/folder

Run UniConverter and on the Convert tab, click on the +Add Files button to load multiple M4V files to be compressed. You can even drag and drop the files. (You can free download it from the buttons below)

add M4V files

Step 2: Choose M4V compression settings for batch process

Next, you need to select the output format of all the added files. The supported formats can be checked from the drop-down menu at Convert all files to: option on the top-right corner. Choose M4V or other as desired from the Video list.

Next, click on the +Create Custom button and a new Setting window will open. Here choose the file size, resolution, bit rate, and other parameters for file compression. Clicking on the Create button will confirm the changes and will create a new customized format with desired output and edited parameters. Choose this format.

M4V compression settings

Step 3: Compress M4V files

Finally hit on the Convert All button to start processing and converting the added files. On PC these files are saved at the location selected at Output tab, while on the software they can be managed from the Converted tab.

M4V compression settings

Part 3. How to Compress M4V File Online

For simple M4V video compression on your Mac, online tool can also be used and one such decent program is Online UniConverter. Working straight from your browser window, the tool facilitates adding M4V and other popular formats for compression of files. The file size, resolution, and format of the added file can be changed using the program for file resizing. The processed files are made available for download from the interface itself. There is no file limit or watermark using the tool.


  • Simple interface
  • No need for software registration or installation
  • No watermark or file size limit
  • Available for Windows and Mac system


  • Dependent on the internet for functioning and speed
  • Limited format support
  • Limited options for file editing and compression
  • No additional features besides video compression

online m4v compressor

Though you can compress m4v file online, the quality is very basic. So if you want high-quality files with added features a professional tool like UniConverter is the best choice. Free download it below.

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Brian Fisher

staff Editor