Convert RMVB to WEBM
RMVB is great for old movie downloads, but WEBM is the better choice for web video, HTML5 players and screen recordings. Convert RMVB to WEBM in seconds, right in your browser.
- No upload — 100% private
- Fast, lossless when possible
- Free & unlimited
- Works on iPhone & Android
Keep this tab open — the conversion runs on your device, nothing is uploaded.
Add more files above to keep converting.
How to convert RMVB to WEBM
- 1
Tap Choose files and select one or more RMVB files (or drag them in).
- 2
Check that WEBM is selected. Use Advanced options for resolution, size or trimming.
- 3
Press Convert. Everything happens on your device — no upload, no waiting in a queue.
- 4
Your WEBM downloads automatically. Converting several files? Grab them all as a ZIP.
RMVB vs WEBM
Both formats are lossy, so the video is re-encoded once. Pick High quality to keep it as close to the original as possible, or Small for the smallest file.
| RMVB | WEBM | |
|---|---|---|
| Full name | RealMedia Variable Bitrate | WebM Video |
| Type | Video | Video |
| Compression | Lossy | Lossy |
| Developed by | RealNetworks | |
| Introduced | 2003 | 2010 |
| Plays on iPhone | ✕ No | ◐ Partly / with an app |
| Plays on Android | ✕ No | ✓ Yes |
| Plays on Windows | ◐ Partly / with an app | ✓ Yes |
| Plays on Mac | ✕ No | ◐ Partly / with an app |
About RMVB and WEBM
RMVB: RMVB is the RealMedia video format that was extremely popular for sharing movies in the 2000s.
WEBM: WebM is Google's open video format using VP8/VP9 and Opus. It is built for the web and is what screen recorders and browsers produce.
Frequently asked questions
How do I convert RMVB to WEBM on my phone?
Will converting RMVB to WEBM reduce quality?
Is this RMVB to WEBM converter free?
Are my files uploaded to a server?
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