With the increasing popularity of online videos and multimedia, the need for diverse file formats is evident. WebM, an open-source, royalty-free media file format, has become a favorite for online streaming. However, while WebM is excellent for web browsers, MP4 remains a more universally accepted format, suitable for most platforms and devices. In this blog, we'll explore how you can convert WebM to MP4 without spending a dime.

Step-by-Step Guide to Convert WebM to MP4 for FREE:

1. Convert WebM to MP4 Using Front.Space On-the-fly transcoding for FREE:

Front.Space Screenshot
Front.Space Screenshot

Converting .webm to .MP4 on the fly using Front Space is a convenient and straightforward process. Front.Space is a cloud-based media management platform that offers powerful features for image and video manipulation, including on-the-fly format conversion. Here's a step-by-step guide on how to do it:

Step 1: Sign Up or Log In to Front.Space

If you don't already have a Front.Sapce account, you'll need to sign up for one. You can sign up for a FREE account that provides a certain amount of storage and bandwidth. Once you have an account, log in to the Front.Sapce Console.

Step 2: Upload Your .WebM File

In the Front.Sapce dashboard, navigate to the "Media Library" section. Click the "Upload" button to upload your .webm file. Front.Sapce will automatically store the file in your media library.

Step 3: Create a Transformation URL

To convert the .WebM file to .MP4 on the fly, you'll need to create a transformation URL. This URL will include parameters that specify the conversion and any additional transformations you want to apply. Here's an example of a Front.Space URL for .webm to .MP4 conversion:
  • Replace "your-project-name" with your actual Front.Space cloud name.
  • Replace "your-video.webm" with the name of your .webm file.
  • Replace "your-origin" with the origin name of your project

In this example, we're using the "f_mp4" parameter to indicate that Front.Space should automatically convert the .webm file to .MP4 format on the fly.

Step 4: Access the Converted .MP4 File

Once you have the transformation URL, you can use it in your website or application to access the converted .MP4 file. When a user requests this URL, Front.Space will perform the conversion in real-time and deliver the .MP4 file.

Additional Options: Custom Transformations

Front.Space provides a wide range of transformation options that you can apply on the fly. For example, you can resize, crop, add watermarks, adjust quality, and more. To include custom transformations in your URL, simply add them as parameters.

Here's an example of a Front Space URL that converts an .webm file to .MP4, resizes it to a width of 640 pixels, and adds a watermark:,y_10,x_10/your-origin/your-video.webm

In this example, we've added the "w_640" parameter to specify the width, and the "l_watermark" parameter to add a watermark to the video.

2. Convert WebM to MP4 Using VLC Media Player:

VLC Media Player is a free and open-source media player that also offers fantastic file conversion capabilities in modern world.

Step 1: Installation
If you don't have VLC Media Player installed, download and install it from the official VLC website.

Step 2: Open VLC and Access Media Conversion
Launch VLC and click on Media in the top left corner. From the dropdown menu, select Convert/Save.

Step 3: Add WebM File
In the dialog box that appears, click on Add and select the WebM file you wish to convert.

Step 4: Choose Conversion Type
Click on Convert/Save at the bottom of the dialog box. Another window will appear. For the profile, select Video - H.264 + MP3 (MP4).

Step 5: Start Conversion
Choose a destination file by clicking Browse. Finally, click Start to begin the conversion process. Once complete, you'll find the MP4 file in the specified destination.

3.  Convert WebM to MP4 Using the Online-Convert Tool:

Online-Converts offers free conversion from WebM to MP4. Here's how to use it:

Step 1: Visit the Website
Go to the Online-Convert website or any other reliable online converter.

Step 2: Choose the Conversion Type
Navigate to the Video converter section and choose Convert to MP4.

Step 3: Upload WebM File
Click Choose Files to upload the WebM file you want to convert.

Step 4: Begin Conversion
After uploading, click the Start conversion button. Once the process is complete, the website will provide a download link for the MP4 file.

4.  Convert WebM to MP4 Using FFmpeg:

If you are comfortable with command lines, FFmpeg is a appropriate tool for video and audio conversion.

Step 1: Install FFmpeg
If you don't have FFmpeg installed, download and install it from the official website.

Step 2: Command Line Conversion
Open the command prompt or terminal. Navigate to the directory containing your WebM file and run the following command:
ffmpeg -i input.webm output.mp4

Replace input.webm with the name of your WebM file. Once executed, FFmpeg will create an MP4 file in the same directory.


There are multiple ways to convert a WebM file to MP4 for free, each catering to different user preferences and technical competencies. Whether you're comfortable using software, online tools, or command lines, converting WebM to MP4 can be accomplished efficiently and without any cost.