Convert AVI to WEBM
Convert AVI files to WEBM locally, completely free and with maximum privacy.
Drag and drop your files here
or click to browse local files (large files supported, limited only by browser RAM)
Upload FilesPlatform Statistics
How to convert AVI to WEBM
- Drop your .avi files above, or click Upload Files. You can add many files at once.
- WEBM is already selected as the output. Open the settings (gear icon) to fine-tune the result.
- Click Convert All. FFmpeg runs inside your browser through WebAssembly; nothing is uploaded.
- Download your .webm files as soon as each one finishes.
What to know about AVI to WEBM conversion
- The video is re-encoded to VP8 video and Opus audio so it plays wherever WEBM is supported, and odd frame sizes are adjusted automatically.
- You can change the resolution, frame rate, playback speed and quality (CRF) before converting.
AVI vs WEBM
| Feature | AVI (Audio Video Interleave) | WEBM (WebM Video Container) |
|---|---|---|
| Codecs used by PureConverter | H.264 video and MP3 audio | VP8 video and Opus audio |
| Best for | compatibility with older Windows software | web video with open, royalty-free codecs |
| Opens in | Windows Media Player, VLC, mpv and most media players | all modern browsers and VLC |
AVI (Audio Video Interleave): A classic Microsoft multimedia container format supporting synchronous audio-with-video playback.
WEBM (WebM Video Container): An open, royalty-free media file format designed for sharing video content directly on HTML5 web pages.
Conversion options
- Resolution: original, 1080p, 720p, 480p or 360p
- Frame rate and playback speed (0.5× to 2×)
- Quality presets or a custom CRF value, and lossless mode
- Audio bitrate, sample rate and channels
Frequently asked questions
Is it safe to convert AVI to WEBM here?
Yes. Your files are processed entirely on your own device by WebAssembly code running in the browser. They are never uploaded, so nobody else can see them, and the converter keeps working even if your connection drops after the page loads.
Is there a file size limit?
There is no server-side limit. The only limit is the memory available to your browser, typically 1.5–4 GB on desktop computers.
Can I convert several AVI files at once?
Yes. Add as many files as you like; they are converted in parallel according to your device's CPU cores, and you can apply the same settings to all of them.
Related conversions
Need the opposite? Convert WEBM to AVI.
Convert AVI to other formats
- AVI to MP4
- AVI to MP3
- AVI to WEBP
- AVI to GIF
- AVI to WAV
- AVI to MOV
- AVI to M4A
- AVI to FLAC
- AVI to MKV
- AVI to AAC
- AVI to OGG
- AVI to OPUS
Convert other formats to WEBM
- MP4 to WEBM
- MOV to WEBM
- MKV to WEBM
- WMV to WEBM
- FLV to WEBM
- M4V to WEBM
- MPEG to WEBM
- TS to WEBM
- 3GP to WEBM
- OGV to WEBM
See every AVI converter and WEBM converter, or browse the full converter directory.