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SocQ

Free WebM to MP4 Converter

Convert WebM screen recordings and web videos to MP4 in your browser.

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How to use this tool

To convert WebM to MP4, choose the WebM file and press Create file: SocQ turns it into an MP4 with H.264 video and AAC audio that plays on iPhone, in PowerPoint and QuickTime, in video editors and on social apps. WebM is the open video format browsers, screen recorders and many websites use. The conversion runs in your browser, the file stays on your device and the MP4 has no watermark.

  1. 01

    Choose your WebM file

    Click Choose files and pick a WebM video. Videos up to 100 MB and 10 minutes are supported.

  2. 02

    Set the quality

    Quality 85 suits most clips. For screen recordings with small text, 90–95 keeps letters sharper.

  3. 03

    Convert and download

    Press Create file, play the MP4 to check it and click Download. The file keeps your original name with .mp4.

WebM vs MP4

WebM was introduced by Google as an open, royalty-free format. It holds VP8, VP9 or AV1 video with Vorbis or Opus audio. MP4 most often holds H.264 video and AAC audio, which phones, TVs, presentation software and editing apps have supported for years. Converting changes the codecs inside, not just the file extension, which is why a converted MP4 opens everywhere.

Where WebM files come from

• Screen and webcam recorders that run in the browser • Videos saved from websites and messaging apps • Exports from tools such as OBS set to WebM • Animated stickers and short clips from web apps If a recording shows a wrong or missing duration, the MP4 gets the correct length written into the file.

Tips for screen recordings

Text and thin lines need the most detail, so use Quality 90 or higher for tutorials and slides. Screen recordings with variable frame rates keep their timing. The MP4 is ready for YouTube tutorials, LinkedIn posts, PowerPoint and Google Slides; to make it smaller for sharing, run it through the video compressor.

Frequently asked questions

How do I convert WebM to MP4?

Choose the WebM file, press Create file and download the MP4. No signup, no watermark.

Is my file uploaded?

No. The conversion runs in your browser and the video never leaves your device.

Can I just rename .webm to .mp4?

Renaming only changes the label; the video inside stays VP8, VP9 or AV1. Converting re-encodes it to H.264 and AAC, so the file really plays as an MP4.

How do I play a WebM on iPhone or in PowerPoint?

Convert it to MP4 first. iPhone and PowerPoint play MP4 with H.264 and AAC reliably, so the converted file opens in both.

Does converting WebM to MP4 keep the quality?

Yes. At the default Quality 85 most clips look the same; for screen recordings with small text, choose 90–95 to keep letters crisp.

What are the limits?

The converter handles videos up to 100 MB and 10 minutes. Conversion runs on your own device, so a long or HD video can take a few minutes; keep the tab open until it finishes.

Does the MP4 keep the sound?

Yes. Opus or Vorbis audio is converted to AAC at 128 kbps.

How do I convert WebM to MP4 on Windows or Mac?

Open this page in Chrome, Edge, Firefox or Safari, choose the WebM file and press Create file. There is nothing to install, and it works the same on Windows and macOS.

Why does the first conversion take a moment longer?

The first run takes a moment to load the converter; later conversions start right away.

Is the WebM to MP4 converter free?

Yes. No signup and no limit on the number of files.

For developers

Research tutorial and demo videos on YouTube

Publishing screen recordings? The SocQ YouTube API returns public videos, channels, transcripts and comments, so you can see which tutorials earn views and what viewers ask in the comments.

Explore the API

youtube/videos

posts0.5 credits / result

youtube/channels

profiles0.26 credits / result

youtube/transcripts

posts0.5 credits / result

youtube/comments

comments0.3 credits / result

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