How to convert MKV to RM
To convert MKV to RM, upload your MKV file, choose RM as the output format and press Convert. The finished RM file is ready to save to your phone or computer in seconds, free, with no watermark and no sign-up. Your file is deleted from our server about 30 minutes after the conversion.
This free online converter turns MKV videos into RM files in your browser, with no software to install and no watermark. When the video and audio inside your MKV file can be placed in RM as they are, the streams are copied without re-encoding, which is faster and keeps the original quality. Otherwise the video is re-encoded as RealVideo 1.0 (up to 480p) with AC-3 audio.
What you get with MKV to RM
- Tiny files for slow connections
- Plays in RealPlayer and VLC
- Historic format useful for old archives
- Plays on: RealPlayer, VLC and MPC-HC
What to expect from this conversion
- Expect a file of similar size to the MKV original.
- The only RealVideo encoder available is RealVideo 1.0, so RM output is limited to 480p and sizes that are a multiple of 16 pixels.
- RM is a legacy format. Convert to it only when an older player or device requires it, since MKV is better for everyday use.
- The first audio track is kept. Subtitle tracks, extra audio tracks and chapters are not included in the converted file.
MKV vs RM
| Property | MKV | RM |
|---|---|---|
| Full name | Matroska Video | RealMedia |
| Released | 2002, Matroska.org (open standard) | 1997, RealNetworks |
| Generation | Modern | Legacy |
| Typical file size | Small | Small |
| Plays on | VLC, Plex, Kodi, most Android players and modern Windows; limited on iOS and older TVs | RealPlayer, VLC and MPC-HC |
| Best for | movie and TV archives with multiple languages; keeping subtitles inside the file | old RealPlayer libraries; restoring early internet video |
Steps to convert MKV to RM
- Drop your MKV video file onto the converter, or click to choose it.
- Check that RM is selected as the target and adjust the options if you want.
- Press Convert, then download your new RM file when it finishes.
Tips for the best result
- Leave Fast mode on to keep the original quality whenever the streams can be copied.
- Pick a lower resolution if the file is for a phone or messaging app.
- Use Mute if you only need the picture.
Frequently asked questions
How do I convert MKV to RM?
Upload your MKV file, make sure RM is the selected target and press Convert. When the progress bar finishes, download the RM file. No account or software is needed.
Is the MKV to RM converter free?
Yes. It is free, with no watermark, no sign-up and no daily limit on how many files you convert. The site is supported by ads.
Will I lose quality when converting MKV to RM?
Not necessarily. If the video and audio streams already fit inside RM, they are copied without re-encoding, so quality stays identical. If the file has to be re-encoded, the High setting keeps almost all visible detail, while Small trades some detail for a smaller file.
Will the RM file be a similar size to my MKV?
Expect a file of similar size to the MKV original. Choosing a lower quality or resolution reduces the size further.
Which devices can play RM files?
RM files play on RealPlayer, VLC and MPC-HC.
How large a file can I upload?
You can upload videos up to 500 MB. Files are deleted from the server about 30 minutes after conversion.