🎬 Video Converter

WebM to MP4 Converter — Free & Private

Screen recordings from Loom, Screencastify, or OBS often save as WebM — a format iPhones can't play and Premiere Pro won't import. Convert to universal MP4 in your browser, no upload required. Share on any device, edit in any software.

⚡ Convert WebM to MP4 Now Browse All Tools

✓ Free forever ✓ No upload ✓ No signup ✓ FFmpeg-powered

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Ready to make your WebM universally compatible?

100% in your browser · H.264 MP4 output · Loom, OBS, and Google Meet compatible

Start Converting →

Where WebM Files Come From — and Why They Need Converting

WebM appears in your life from specific tools: Loom's older recording versions defaulted to WebM, OBS Studio configured for web streaming outputs WebM, Chrome's experimental screen recorder saves WebM, and some Google Meet recordings downloaded from Google Drive arrive as WebM. The format is optimized for web playback in Chrome and Firefox — but the moment you step outside those browsers, problems start. iPhones and iPads refuse to play WebM entirely, Windows Media Player needs codec packs, Adobe Premiere and Final Cut Pro won't import it, and most social platforms either reject WebM or transcode it with quality loss. Converting to MP4 (H.264) takes seconds and gives you a file that works everywhere without compromise.

📱 iPhone & iPad compatible — Apple devices block WebM natively; MP4 plays on every iOS version
🎬 Editor compatible — Premiere Pro, Final Cut, DaVinci Resolve all import MP4 directly
📤 Social media ready — YouTube, Instagram, TikTok, and Twitter all prefer MP4 uploads
💻 Windows Media Player — no codec packs needed; MP4 plays out of the box on Windows
📺 Smart TV compatible — stream or cast MP4 from any device to your TV
🔒 100% private — FFmpeg.wasm converts locally; your screen recordings never touch a server

How to Convert WebM to MP4

Open the Converter

Click "Convert Now" to open the video converter with WebM → MP4 pre-selected.

Load Your WebM File

Drag & drop your WebM or click Browse. Works with VP8, VP9, and any WebM source.

Convert in Browser

FFmpeg.wasm re-encodes VP8/VP9 to H.264 MP4 entirely in your browser. No server involved.

Download MP4

Your MP4 downloads automatically — ready for any device, editor, or social platform.

Features

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100% Private

FFmpeg.wasm runs locally. Screen recordings never leave your device.

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Screen Recording Support

Handles Loom, OBS, Screencastify, and Google Meet WebM exports.

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Free Forever

No account, no fee, no watermarks. Convert any number of recordings.

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Editor Ready

Output MP4 imports directly into Premiere, Final Cut, and DaVinci Resolve.

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Universal Output

MP4 plays on iPhone, Android, smart TV, and every media player.

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Audio Preserved

Opus/Vorbis audio converts to AAC — the standard for MP4 files.

Frequently Asked Questions

Drop your WebM file into the converter, select MP4 output, convert, and download. The resulting MP4 plays on any device and imports into any video editor.

Apple devices don't support the WebM container natively. Converting to MP4 (H.264) gives you a file that plays on every iPhone model without any additional apps.

Adobe Premiere Pro doesn't natively import WebM. Final Cut Pro also lacks WebM support. Convert to MP4 first, then import into your video editor without issues.

The conversion re-encodes the video from VP8 or VP9 to H.264. At equivalent settings, quality is very similar. Minor quality reduction is possible — use a high quality setting to minimize it.

Yes. Converting to MP4 makes the video playable on every phone, TV, computer, and media player without any additional codecs or apps.

Some WebM recordings (especially from certain screen recorders) don't capture audio. This isn't a conversion issue — the source WebM file has no audio track.

No. FFmpeg.wasm converts your video entirely in your browser. Your files stay on your device throughout the process.