Convert WEBM to AVI
Free, fast and secure — convert WEBM to AVI right in your browser.
Convert WEBM to AVI with a solid background
Converting WEBM to AVI flattens transparency onto a solid background, producing a AVI video that displays consistently wherever transparency is not supported.
How to convert WEBM to AVI
- 1 Drop your WEBM file into the converter above.
- 2 It is converted to AVI automatically — no settings to fiddle with.
- 3 Download your new AVI file instantly.
WEBM vs AVI
| Feature | WEBM | AVI |
|---|---|---|
| Compression | Lossy | Lossy |
| Transparency | Yes | No |
| Animation | Yes | Yes |
| MIME type | video/webm | video/x-msvideo |
| Best for | Embedding fast-loading video on websites and web apps. | Legacy desktop video — usually converted to MP4 for sharing and streaming. |
About the formats
WebM video
WebM is an open, royalty-free format built for the web. It streams efficiently in modern browsers and supports transparency, making it a favourite for HTML5 video.
Strengths
- Optimised for web streaming
- Open and royalty-free
- Supports alpha transparency
Limitations
- Limited support outside browsers
- Not ideal for editing
- Less common on mobile apps
Best for: Embedding fast-loading video on websites and web apps.
AVI video
AVI is a long-standing Microsoft container. It is widely readable on desktops and can store high-quality video, but its files are large and it lacks modern streaming features.
Strengths
- Broad desktop compatibility
- Simple, well-understood format
- Can hold high-quality video
Limitations
- Large file sizes
- No modern streaming features
- Weak mobile/browser support
Best for: Legacy desktop video — usually converted to MP4 for sharing and streaming.