Convert WebM to AVI
Choose your WebM file and get a AVI file in seconds. Nothing leaves your device.
Converter
- FilesOne or many, images and videos mixed
- FolderEvery matching file inside, subfolders included
- ArchiveZIP, RAR, 7z or TAR: convert the contents or the archive itself
Drop files, folders or archives here
Unsupported files are skipped. Nothing is uploaded.
Everything runs in your browser. Files are not uploaded.
About this conversion
Only the container and encoding change; picture and sound are re-encoded in your browser.
Good to know
Recompressing a lossy file costs a little more quality.
The video is re-encoded, which takes time depending on length and device.
AVI is an old container; the file is encoded with the widely compatible MPEG-4 codec.
How it works
This conversion uses ffmpeg compiled to WebAssembly. It is loaded only when needed and runs in a background thread.
Your browser can
- Built-in image codecs
- Hardware video (WebCodecs)
- Multiple threads
- Create AVIF natively
If something is missing, the conversion takes a little longer but still works.
About WebM
WebM is an open video format for the web, using VP8 or VP9 video and Opus audio.
- Web video
- Screen recordings from browsers
- Open-source projects
About AVI (Audio Video Interleave)
AVI is a legacy Microsoft video container from 1992, still found in old archives.
- Simple and well known
- Plays in old software
- Many codecs can be used
Related conversions
Frequently asked questions
Are my files uploaded to a server?
No. The conversion runs entirely in your browser with local code. Your files never leave your device, and there is no upload.
Is there a file size limit?
There is no limit on our side, but your browser memory is. Images work for very large files; for videos, files above a few hundred megabytes can fail on devices with little memory.
Will the quality suffer?
That depends on the target format and settings. Use the quality option to balance size and detail; lossless targets keep everything the source contained.
Which browsers are supported?
Current versions of Chrome, Edge, Firefox and Safari. Fast hardware paths are used where available, with a compatible fallback otherwise.