MP4 to WebM – Top 5 WebM Video Converters for Windows and Mac

Laura Goodwin Oct 13, 2021 Convert Video

WebM is a popular video format. The open-source video format was developed and released by Google for HTML5. When you want to upload videos from an iPhone or other devices online, you can convert MP4 to WebM instead.

Because WebM works better on the Internet than other video formats and offers better compression and video quality. Most of the major web browsers are compatible with WebM, including Chrome, Firefox, Opera, Safari and more. What are the best MP4 to WebM converters to transcode files to WebM videos? Just check out the solutions from the article now.

11 Mov to Mp4

Part 1: How to convert MP4 to WebM with Vidmore Video Converter

When you have to deal with a large amount of videos for online video sites every day, it is essential to have professional MP4 to WebM converter instead. Vidmore Video Converter is the desired WebM converter with advanced hardware acceleration and batch conversion. Moreover, it also enables you to have high quality WebM videos when you upload video online.

  1. Convert video between MP4 and WebM, as well as other 300 video formats.
  2. Adjust the video and audio settings and codecs with different parameters.
  3. Batch process to convert multiple MP4 videos to WebM at the same time.
  4. Enhance the videos with upscale resolution, video de-shaking and more.

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Step 1: Import multiple MP4 videos

Once you download and install Vidmore Video Converter, you can launch the program and click the "Add Files" to import multiple MP4 videos at the same time. You can simply drag-n-drop multiple videos to the program.

Import Video

Step 2: Choose WebM as output format

Click the "Profile" menu and select the "WebM" as the output format, you can also select HD or 4K WebM videos. You can click the "Settings" to adjust video encoder, frame rate, resolution and more other parameters.

Webm Profile

Step 3: Enhance the output WebM quality

If you get MP4 videos from an iPhone or Android phone, it is recommended that you can click the "Enhance" option to upscale resolution, optimize brightness and contrast or remove video noise to enhance video quality.


Step 4: Convert MP4 to WebM in batch

When you select all the MP4 videos, you can click the "Convert" button to convert MP4 videos to WebM in a batch process. After that you can upload the videos to online video sites.

Part 2: How to turn MP4 to WebM online through CloudConvert

CloudConvert is a popular online MP4 to WebM converter. You can convert video files with unlimited file size, processing multiple videos at once, and multiple input and output sources. However, you should pay attention to the freezing and crash issues when converting large MP4 files to WebM.

Step 1: Enter the URL address of CloudConvert and go to the website.

Step 2: Press the downward icon next to the "Select Files" button and select MP4 files from the computer, URL or other sources. For example, click the "Select from my computer" option and then upload your MP4 files.

Step 3: Then make sure to select the "WebM" option from the dropdown list. And if you want to change custom options, click the "Toolbox" icon to open the "Options" dialog. After setting, click "Okay" button to confirm.

Step 4: Finally, click the "Start Conversion" button to convert MP4 to WebM online. When the download page pops up, get the WebM videos to your computer.

Tip: To send the WebM videos to your cloud account, tick the checkbox next to “Save file to my computer” and select your service provider and drop your account.


Part 3: How to change MP4 videos to WebM by is another online MP4 to WebM converter, which allows you to drag and drop a video file to the website and start converting with ease. It has the basic convert and compress features, which lack of advanced features for tech savvy. Here is the detailed process to convert MP4 files to WebM format.

Step 1: Visit the website in your browser and click the "Plus" icon to upload MP4 video from your computer.

Step 2: Select the "WebM" option from the dropdown menu and click the “Convert” button to initiate converting MP4 to WebM. It only processes video files up to 50MB at one time.

Step 3: It may take a while to convert WebM files, which depends on the Internet connection and your hardware. Then download the output WebM files to your hard drive.

Note: It keeps asking you to download the desktop software to convert video files. Moreover, it does not offer any custom options, such as bitrate, resolution and more other parameters.


Part 4: How to convert MP4 to WebM using Aconvert

Aconvert is an all-in-one online WebM converter, which supports extensive video formats, like WebM. Just import a video file up to 200MB from your computer, URL, Google Drive or Dropbox. When you convert MP4 to WebM format, you can modify aspect, video size, bit-rate, frame rate and more other parameters.

Step 1: Select the "Video" option from the left sidebar when you enter the MP4 to WebM converter online. Click the “Browse” button to upload the MP4 video you intend to convert. In order to import MP4 from another source, select the corresponding tab.

Step 2: Press and expand the "Target format" dropdown list and choose the "WebM" as output format. Select the "Change Size", "Bitrate" or "Frame Rate" from the "Options" dropdown list to modify different parameters.

Step 3: After that, click the "Convert Now" button at bottom right corner to trigger the MP4 to WebM conversion process. Now click the link under "Output File" and right-click on the file to download the WebM video to your computer.

Note: If the conversion fails, you will find the error message under the Output File, especially for the large MP4 video. Just have another try to find whether it works.


Part 5: How to turn MP4 to WebM via Vidmore Free Online Video Converter

Vidmore Free Online Video Converter provides both audio and video converting solutions, includes convert MP4 videos to WebM online. It enables you convert 1080P videos, videos from iPhone, Android phone, PSP, PS3 or PS4 devices. Moreover, you can also adjust the video settings and audio settings.

Step 1: Enter the into the address bar and hit the Enter key to open the home page. Then click the "Add files to convert" button to import MP4 videos from your computer.

Step 2: Choose the "WebM" as the output format. Click the arrow next to "Resolution" to choose the desired video quality, adjust the video settings and audio settings.

Step 3: If you are satisfied WebM output, you can click the "Convert" button and choose the destination folder to convert MP4 to WebM online within few seconds.

Mp4 to Webm


The article shares 5 best methods about how to convert MP4 to WebM. As for the online MP4 to WebM converters, you can use them without installing extra programs. If you need to preview the WebM files, enhance the video quality, apply the video effects and more others, Vidmore Video Converter should be the ultimate solution you have to take into consideration. If you have more queries, you can share more detailed information in the comments.

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