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MP4 RM
Free online converter

Convert MP4 to RM

Convert now
MP4 to RM converterFREE
Drop a .MP4 file here
or pick one - we convert it to .RM and give you the file to download

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Tested on macOS, Windows & Linux
Last verified Oct 2026

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How to convert MP4 to RM

  1. Add your .MP4 file - drop it in the box above or click to browse.
  2. Convert it to .RM in a few seconds.
  3. Download your new .RM file.

What to expect

  • Full lossy re-encode to RealVideo/RealAudio.
  • RM is proprietary and effectively legacy.
  • Chapters and subtitle tracks from the MP4 are not preserved.

Frequently asked questions

Will the RM file match the MP4's quality?
No. The MP4 is re-encoded to RealVideo/RealAudio, an older lossy codec, so some quality is lost in the process.
Why convert MP4 to RM?
Chiefly for compatibility with legacy RealPlayer-based systems; the RealMedia format is largely obsolete today.
What opens an RM file?
VLC opens RM for free on Windows, macOS, Linux, Android and iOS, so the old RealPlayer is not required.
Is RM a good format to keep video in?
Not for the long term. RM is a dated, proprietary RealNetworks format, so MP4 is the more future-proof choice for archiving.
Learn about the formats: .MP4 · .RM
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