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How to Convert MP4 to WebM with Zero Quality Loss

by Christine Smith • 2021-07-28 11:19:36 • Proven solutions

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If you regularly upload videos to the web, the WebM video file format offers better compression and video quality compared to other video formats. It’s also supported by the major browsers. WebM videos are quite popular on video sharing sites like YouTube and even on other specific websites. If you don’t have the right software, it will be quite challenging to convert MP4 to WebM.  

Part 1. Convert MP4 to WebM with best video converter recommended.

The Wondershare UniConverter (originally Wondershare Video Converter Ultimate) is a versatile application through which you can use to convert MP4 files to WebM within a few minutes and without losing video quality. This video converter has many benefits compared to competitors. They include:

Wondershare UniConverter

Security Verified. 5,481,347 people have downloaded it.
  • Convert MP4 videos to WebM and other 1,000+ video formats, including MOV, AVI, etc.
  • 90X faster conversion speed than any conventional converters
  • Edit the video files with trimming, cropping, cutting, merging, adding subtitles, etc.
  • Burn videos to DVD with customized free DVD menu templates
  • Download or record videos from 10,000+ video sharing sites
  • Industry-leading APEXTRANS technology converts videos with zero quality loss or video compression
  • Versatile toolbox combines video metadata editor, GIF maker, video compressor, and screen recorder

How to Convert MP4 to WebM using Wondershare UniConverter?

  1. Add MP4 files to Wondershare MP4 file to WebM converter.
  2. Select WebM as the output format.
  3. Start the MP4 video to WebM conversion.

Step 1 Upload the MP4 files.

You can do this in two ways. First, you can drag and drop the files into the program. Second, you can click to the add files icon in Wondershare UniConverter . This opens a new window where you can select the MP4 files you wish to convert to WebM. Once you’ve uploaded your files you can preview them, change their names or even merge them.

How to Convert MP4 to WebM - add files

Step 2 Select output format (WebM).

At the right of the window, click on the drop-down list of Output Format: open a new window. Click on the Video button and select WebM.

How to Convert MP4 to WebM - select output format

Step 3 Start conversion.

Once you’re satisfied with the video quality, click on the Start All button to start the conversion process. It takes a few minutes to complete depending on the file size being converted. Once the process is complete, you can view the converted file by clicking on the Open Folder button located at the bottom of the window.

How to Convert MP4 to WebM - add files

Optional Customize by editing.

If you want to create a custom WebM video, you have the option of making edits before converting. The editing settings can be made after you click on the buttons below the videos. Some of the edits you can make by using Wondershare UniConverter, including cropping, trimming, rotating, changing brightness and contrast as well as adding subtitles.

How to Convert MP4 to WebM - editing videos

Free Download Free Download

Part 2. Free MP4 to WebM video converter.

2.1 Wondershare Video Converter Free

You can also convert your MP4 files to WebM for free using the Wondershare Video Converter Free. This software allows you to convert your video files without paying anything which can be convenient if you are just converting a single file. In addition, this is a lightweight software that is supported by windows NT4 up to Windows 8. It can also run on PCs with low processing power and memory.

Key Features:

  • Eye-blinking file conversion speed.
  • Powerful video editing functions.
  • Secure and reliable.
  • Excellent conversion quality.
  • YouTube downloading capacity.

2.2 Converting MP4 video files to WebM using Wondershare Video Converter Free

Step 1 Import the MP4 files.

Once you have installed and run the software, import your MP4 files by dragging and dropping onto the main interface. You can also import files by clicking on the Add files button. This opens a new window where you can locate and select one or more MP4 files for upload.

How to Convert MP4 to WebM with Zero Quality Loss?

Step 2 Select output and edit.

Once you’ve completed uploading your MP4 files, click on Convert all files to, and select WebM as the desires output. You can also make edits to your video before converting it.

How to Convert MP4 to WebM with Zero Quality Loss?

Step 3 Convert the file from MP4 format to WebM.

After you’re satisfied that your output video is well-edited, click on the convert button. This process can take a few minutes to complete.

Part 3. Online MP4 to WebM converter.

There are many online converters to convert your MP4 files to WebM files free. Online UniConverter (originally Media.io) is one of the best converters which can convert 2 files at one time and the maximum size is 100MB which is larger than the general online tools with the maximum of 50MB. Without installing any third-party software, you can use it as soon as you want by clicking this free online video converter. It converts videos from MP4 format to WebM and other regular audio and video formats.

wondershare online free video converter

If you want to get the best video output quality and the fastest conversion speed? UniConverter is the most reliable video conversion tool for you. Just try it below.

Free Download Free Download

Part 4. Choose MP4 format to WebM video converter that's right for you.

 Features/Software Online Video Converter Free Video Converter Best Video Converter 
download for mac Download
download for win Download
Convert home DVD
 
import songs
Convert Video to common formats
popular formats
Only common formats
Almost all formats, over 1000 formats
Batch conversion of video files  
play ios music
import songs
Maximum upload file size
200 MB
Unlimited
Unlimited
Video Conversion speed
Slow
Good
Fastest Video Conversion in the Industry
Video conversion quality
General
Good
Lossless quality
Convert any 2D videos to a 3D format at ultrafast speeds
 
get songs together
Convert HD Video including 4K H.265/HEVC
 
itunes match
Burn video or audio to DVD for personal
   
transfer songs from computer to iphone
Download YouTube Video and the videos from other video sharing sites
   
play music on iphone
Record Online Videos
 
convert video
Editing functions: Clip, Split, Crop, Merge, Rotate and More
 
copy songs from iphone to pc
Special Effects for video editing
 
backup iphone photos
Add or Remove Text/Image Watermark
   
delete ipad photos
Plug-in Subtitle
 
delete music and video from iphone
Transfer videos to your Apple and Android devices with a USB cable
transfer music from iphone to itunes
Streams your media files on a PC to a smart TV    
transfer music from iphone to itunes
Perfect DLNA support built-in
transfer playlists from iphone to computer

Part 5. Extended knowledge for WebM and MP4 video formats.

Here is a table providing more information regarding the MP4 and WebM video formats

File Extension WebM MP4
Category

Video File

Video File
Description WebM is a video file format. Its development was sponsored by Google and is intended to provide a royalty-free video format that can be played on web browsers.

MP4 is a container file. It enables different types of multimedia like video, audio, and images to be stored within a single file.

Associated Programs

Modern Browsers that support HTML5

Windows Media Player
Apple iTunes
VLC Media Player
QuickTime

Developed by

Initially On2, Xiph, and Matroska; later Google.

Moving Picture Experts Group
MIME Type
Video
Video
Useful Links

About WebM
Details for WebM
Introduction to WebM File Structure

Details for MP4 on Wikipedia
How to Convert and Burn MP4 to DVD
How to Play MP4 on TV

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Christine Smith

Christine Smith

chief Editor

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