11 Best Online WebM to MP4 Converter Tools

Do you have WebM videos that you want to convert to the more compatible MP4 format? WebM is a relatively new video format that was introduced in 2010. While it offers high quality video compression using the VP8 and VP9 video codecs, the format has limited device support compared to the popular MP4 format.

Converting WebM to MP4 allows you to play your videos on a wider range of devices like smartphones, media players, TVs and more. In this guide, we‘ll recommend the top 11 online WebM to MP4 converter tools to easily change the container format of your videos.

Overview of WebM and MP4 Video Formats

First, let‘s briefly explain what WebM and MP4 files are.

What is WebM?

WebM is an open source video format that was developed by Google in 2010. Some key things to know:

• WebM files use the .webm file extension.

• WebM videos are encoded with the VP8 or VP9 video codecs and Vorbis or Opus audio codecs. These provide high quality video at smaller file sizes.

• The purpose of WebM is to provide a free video format for the HTML5 web video element.

• Browser support is decent but not universal – Chrome, Firefox and Opera support WebM but Safari and IE/Edge do not.

• WebM has limited support on consumer devices and lacks broad adoption compared to MP4.

So in summary, WebM is designed for web video playback but has compatibility issues on many devices and web browsers. Converting to MP4 can improve compatibility.

What is MP4?

MP4 is arguably the most widely supported video format:

• MP4 files use the .mp4 file extension.

• MP4s can contain H.264 or H.265 encoded video streams and AAC encoded audio.

• It is the standard video format for many devices, websites, media players and platforms.

• MP4 enjoys nearly universal playback support. However, certain advanced MP4 features may not be supported depending on the device or app.

MP4 is the better choice if you want your videos to be playable on the widest range of devices and platforms. However, converting from WebM to MP4 will result in some loss of quality since the files need to be re-encoded.

Why Convert WebM to MP4?

There are a few main reasons why you may want to convert your WebM videos into the MP4 format:

• Playback on more devices – Since MP4 has broader support, converting WebM files allows you to play the videos on smartphones, tablets, smart TVs, game consoles and other gadgets that may not support WebM.

• Editing and sharing – Many video editing apps and social media platforms work better with MP4 files compared to WebM. Converting the format makes the videos more compatible for editing workflows and sharing the final output.

• Online streaming – Most streaming services use H.264 video in an MP4 container. Converting WebM to this format makes them more suitable for platforms like YouTube, Facebook, etc.

• Archiving – If you want to create future-proof video archives, MP4 is a safer bet for long-term compatibility compared to the newer WebM format.

So in summary, converting to the near-universally supported MP4 format opens up more possibilities for where you can play, edit and share your videos.

11 Best WebM to MP4 Converters

Now let‘s look at some of the top online WebM to MP4 converter tools:

1. Online UniConverter

Online UniConverter is one of the most powerful online video converters available. It supports converting WebM to MP4 as well as 1000+ other format combinations.

Some key features:

• Intuitive drag and drop interface.

• Lets you customize MP4 parameters like video codec, resolution, bitrate and more.

• Preserve original quality or compress to smaller file sizes.

• Batch convert multiple files at once.

• Simple editor to trim, crop and resize videos.

• Media server to directly convert Google Drive/Dropbox files.

Online UniConverter provides advanced controls when converting WebM to MP4 to get your desired file properties. And it‘s free to use with no limits besides a max file size per batch.

2. CloudConvert

CloudConvert is another excellent WebM to MP4 converter. It supports 200+ different file conversions.

Some notable aspects:

• Intuitive drag and drop interface.

• Modify video codec, quality, size and other parameters.

• Directly integrate with Amazon S3 buckets.

• Developer friendly API.

• Protected handling and automatic file deletion.

The free plan lets you make 25 conversions per day. Paid plans start at $4.99/month with more features and quota. Overall, CloudConvert is a versatile online file conversion platform.

3. Online Media Converter

Online Media Converter is a straightforward, easy-to-use WebM to MP4 converter. Just add your file, select MP4 as the output, and convert.

Key features:

• Support 200+ formats including multimedia, documents, images, archives and more.

• Customize MP4 settings like codec and quality.

• Batch convert unlimited files.

• Secure HTTPS encryption.

The tool is completely free with no limits. The interface is a bit dated but it gets the job done for basic conversions.

4. FileZigZag

FileZigZag provides an easy WebM to MP4 converter alongside many other file conversions.

Why you may choose it:

• Clean and straightforward interface.

• Customize video resolution, codec and audio settings.

• Unlimited conversions with max file size of 1GB.

• Secure HTTPS browsing.

• Delete files automatically after 1 hour.

For basic needs, FileZigZag is a solid WebM to MP4 converter option completely free to use.

5. FreeConvert

As the name implies, FreeConvert offers a capable WebM to MP4 converter for free.

Why you may pick it:

• Convert many formats beyond just video files.

• Customize parameters like resolution, aspect ratio, codecs and more.

• No limits on max files or conversions.

• Secure 256-bit SSL encryption.

FreeConvert has been around for over 10 years and is continually improved. It‘s a solid choice if you have basic conversion needs.

6. OnlineConvert

OnlineConvert focuses on ease of use for fast file conversions.

Notable features:

• Minimal and intuitive interface.

• Configure resolution, codec, bitrate and other settings.

• Unlimited conversions and large files supported.

• Convert directly from Google Drive and Dropbox.

• Available as a mobile app too.

OnlineConvert strips out the extras and delivers a simplified conversion experience free of charge.

7. Convertio

Convertio provides a straightforward WebM to MP4 converter with a clean interface:

• Drag and drop files to convert.

• Customize MP4 resolution, audio quality and compression.

• Integrations with Google Drive, Dropbox, OneDrive and URL sources.

• Unlimited conversions. Max file size 1 GB for free account.

• Secure HTTPS encryption and auto file deletion.

As a bonus, Convertio has browser extensions that allow direct website media conversions. It‘s a handy option for basic file conversions.

8. Zamzar

Zamzar has offered file conversions for over 15 years:

• Convert WebM to MP4 and many other formats.

• Customize MP4 settings like codec, resolution and bitrate.

• Integrates with cloud storage providers.

• Maximum file size 50 MB for free account.

• Offers paid API access too.

The longevity of Zamzar speaks to its capabilities as a solid file conversion platform.

9. FileZilla

Better known as an FTP app, FileZilla also provides a free WebM to MP4 online converter:

• Drag and drop WebM file to convert.

• Configure MP4 resolution, audio quality and other settings.

• Unlimited conversions and max file size of 1 GB.

• All data transferred over secure SSL.

FileZilla is a nice option for those wanting an easy converter from a trusted open source brand.

10. VideoToolbox

VideoToolbox offers a straightforward WebM to MP4 conversion:

• Customize resolution, audio quality, FPS and other settings.

• Convert unlimited files up to 1 GB each.

• Set output video metadata like title and description.

• Integrates with Google Drive, Dropbox, etc.

• Also functions as an online video editor.

VideoToolbox covers the basics well for free WebM to MP4 conversions.

11. Online Video Converter

Online Video Converter offers a no frills WebM to MP4 conversion service:

• Customize resolution, codec, bitrate and other settings.

• Directly load videos from YouTube, Facebook, Dailymotion and 1000+ other websites.

• Convert unlimited WebM files.

• Intuitive and easy to use interface.

This tool focuses purely on providing an easy video conversion experience for free.

Converting WebM to MP4 with Desktop Software

The online WebM to MP4 converters we covered make it easy to quickly change formats through your web browser. However, for certain situations a desktop software converter may be a better choice:

Convert large batches of files – If you need to convert many large WebM files, a desktop app can batch process these faster than uploading individually.

Finely tune conversions – Desktop tools may provide more advanced control over parameters like video bitrate, audio channel mapping, metadata handling and more.

Integrate into workflows – Apps can be more readily integrated into video editing, production and automation pipelines.

Enhance videos – Many converters like UniConverter offer editing features to trim, crop, adjust color and apply effects when converting files.

Avoid uploading files – Users with privacy concerns may prefer an offline converter that processes files locally versus uploading to a website.

Here are some of the most popular and full-featured desktop programs for converting WebM to MP4:

• UniConverter – All-in-one converter and editor.
• FFmpeg – Open source command line tool. Widely used but complex.
• HandBrake – Open source video transcoder. Basic but easy to use.
• XMedia Recode – Capable converter with many options. Windows only.
• Aconversion – Cross platform batch converter. More advanced settings available.
• WinFF – Open source converter for Windows. GUI for FFmpeg.

For most consumer usage, tools like Online UniConverter, HandBrake or XMedia Recode provide a good balance of conversion capabilities and ease of use. But check them out to see which desktop converter best fits your needs.

Conclusion

Converting WebM video files to the more widely supported MP4 format can greatly expand device and app compatibility. We covered a range of excellent online converter options that provide a fast and simple way to change formats through your web browser.

Desktop converter apps enable more advanced control over the conversion process. However, online converters offer greater convenience for quick conversions without installing anything.

Hopefully this guide covered the major WebM to MP4 converters to consider. Let us know if you have any other favorite converter tools we should check out!