Convert RMVB to MKV
RMVB is great for old movie downloads, but MKV is the better choice for movies with multiple audio tracks and subtitles. Convert RMVB to MKV 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 MKV
- 1
Tap Choose files and select one or more RMVB files (or drag them in).
- 2
Check that MKV 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 MKV downloads automatically. Converting several files? Grab them all as a ZIP.
RMVB vs MKV
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 | MKV | |
|---|---|---|
| Full name | RealMedia Variable Bitrate | Matroska Video |
| Type | Video | Video |
| Compression | Lossy | Lossy |
| Developed by | RealNetworks | Matroska.org |
| Introduced | 2003 | 2002 |
| Plays on iPhone | ✕ No | ✕ No |
| Plays on Android | ✕ No | ◐ Partly / with an app |
| Plays on Windows | ◐ Partly / with an app | ✓ Yes |
| Plays on Mac | ✕ No | ◐ Partly / with an app |
About RMVB and MKV
RMVB: RMVB is the RealMedia video format that was extremely popular for sharing movies in the 2000s.
MKV: MKV is a flexible open container that can hold unlimited video, audio and subtitle tracks. It is popular for movies and anime but isn't supported by iPhone or most TVs out of the box.
Frequently asked questions
How do I convert RMVB to MKV on my phone?
Will converting RMVB to MKV reduce quality?
Is this RMVB to MKV converter free?
Are my files uploaded to a server?
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