How to Convert WebM to MKV Quickly?

Nov 18, 2021
  • Get the Powerful WebM to MKV Converter Free Download Free Download Here:
  • 1. Convert WebM files to MKV without losing quality;
  • 2. Process multiple WebM-to-MKV conversions simultaneously;
  • 3. Straightforward process and fast conversion speed;
  • 4. No size, length limits.
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How to Convert WebM Files to MKV Easy & Fast?
Step 1. Input WebM Files
Step 2. Choose Target Format
Step 3. Output MKV Files
WebM to MKV Converter Online?

Many browser videos come in WebM format. When you download such videos, you get them with a .webm extension. For some reason, you might want to convert WebM to MKV. Given that, we offer an easy and fast solution to convert WebM files to MKV in batches. Read on to know more.


Fun Fact: WebM is actually a subset of Matroska (MKV). Compared with MKV, WebM has extra limits. It’s interesting to note that though both MKV and WebM are video containers, WebM can only hold video streams compressed with VP8 or VP9 video codecs and audio streams compressed with the Vorbis or Opus audio codecs. MKV, however, is much more flexible to contain a wide variety of compression formats. By converting WebM format to MKV, you can unlock those restrictions and work your video more readily.

How to Convert WebM Files to MKV Easy & Fast?

A video converter is required to perform video conversions. To convert WebM files to MKV, we’d recommend WonderFox HD Video Converter Factory Pro, a professional video converter designed to handle all kinds of video/audio conversions. It can easily convert WebM videos to MKV in high quality. Also, it has a batch mode that can help process multiple files at the same time. Moreover, thanks to its clever interface and advanced features, the software is suitable for users of all levels.

Now, free download free download the video converter and follow the tutorial below to convert your WebM files to MKV.

Powerful Video Converter

HD Video Converter Factory Pro makes it easier than ever to convert between video/audio formats. With it, you can handily convert WebM files to MKV without a problem. Get it to enjoy a fast and high-quality conversion experience now.

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Step 1. Import Source File(s)

Run HD Video Converter Factory Pro and open the Converter. Click the + Add Files button or Add Video Folder button to load the MKV video(s) into the converter. Or, you can simply drag and drop the source file(s) into the program directly.

Step 2. Select Output Format

On the right side of the interface, click the format image to expand the output format list. Go to the Video section and select MKV as the output format. You can freely pick other profiles if you have different ideas.

Tips: For users who wish to change video parameters, they can open the Parameter settings and configure video/audio settings from there. Users are allowed to change a/v codecs, convert video resolution, alter bitrate, frame rate, etc.

Step 3. Start Conversion

Click the bottom triangle button to specify an output folder or leave it as default. Finally, hit Run to start the process. It should take a few minutes depending on the original file size.

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Explore More of HD Video Converter Factory Pro

HD Video Converter Factory Pro is a feature-rich program that comes with loads of other useful tools to help you:

  • Convert videos and music to 500+ profiles for easy playback;
  • Download movies and songs from YouTube and 300+ websites;
  • Compress large video/audio files to half size in batches;
  • Upscale or downscale video quality with details preserved;
  • Add/remove video subtitles, extract audio from videos;
  • Trim, crop, rotate, merge, watermark, add filters to videos at will;
  • Record meetings, gameplay, streaming videos, etc. in HD;
  • Make funny GIFs, design ringtones, create video collages, and more;
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How about WebM to MKV Converter Online?

When you search how to convert WebM videos to MKV on Google, the first few rows of results are often ads of online video converters. These services seem to be a shortcut to your desired conversions. But what might disappoint you is that many of these converters hold various types of restrictions. One of the most obvious limits is the size restriction. Even their paid plans won’t let you go over a certain size, meaning that you are out of luck to use the service if you have a big video file. What’s more, online conversions can get easily influenced by your network conditions. If you don’t have a strong and stable internet, you could waste your time waiting for the online conversion to complete. There is also concern over the security of online converters as many of these converters have suspicious ads and pop-ups on their sites.

In a word, we would suggest that you find a reliable online converter before you do any online conversions. But we would most recommend you use the desktop converter for a more stable and safe conversion experience.

At Last…

That’s all for how to convert WebM files to MKV efficiently. If you have any questions during the conversion process, you can let me know on Twitter. I’ll do my best to help. Thanks for reading!

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