RM Converter
FileFlip converts RM files into 31 other formats entirely inside your browser, using FFmpeg and WebCodecs compiled to WebAssembly. The RM file is never uploaded to a server: it is read off your disk, converted on your own machine, and saved back by the browser. There is no file-size limit and no account to create.
How do I convert an RM file?#
- Drop your RM file onto the converter at the top of this page, or click it to pick one from your computer.
- Choose the format you want out of it. FileFlip downloads the engine that conversion needs, once, and your browser caches it.
- Conversion starts the moment you pick the format, and the result is yours to download. The work happens in this tab, so nothing is uploaded and nothing is queued.
Is it safe to convert RM files online?#
Yes, because nothing is uploaded. FileFlip converts RM files inside the browser tab you already have open, using WebAssembly builds of the same engines a desktop converter would install. Your file is read from your own disk into the page's memory, and no request carrying it is ever made.
You do not have to take that on trust. Open your browser's network panel, run a conversion, and you will see the engine come down and your file go nowhere. There is no upload, no server-side copy, no retention window, and no account tied to what you converted.
How FileFlip works lists every engine, its version and its download size, and shows how to check for yourself that nothing leaves your machine.
What happens to a RM file#
FileFlip converts RM into 31 formats with FFmpeg and WebCodecs, all of it inside the browser tab. Each conversion below names the engine it uses, what it downloads, and exactly what that conversion keeps or drops.
| Category | Video Files |
|---|---|
| File extension | .rm |
| FileFlip support | Read only, so it is a source rather than a target |
| Conversions available | 31 |
| Engines | FFmpeg and WebCodecs |
| Downloaded to your browser | 30.8 MB on the first conversion, then cached |
What is an RM file?#
An RM file is a RealMedia container from RealNetworks, holding RealVideo and RealAudio streams built for the dial-up era, when RealPlayer was how most people first watched video over the internet.
There is no current reason to create a new RM file; it only shows up now as something to get footage out of.
Convert RM to MP4 as soon as one turns up, since RealPlayer support keeps shrinking and most other software cannot open the format at all.
The RM file format reference covers the specification, the programs that open one, and what each conversion keeps or drops.
RM questions people ask#
What still opens an RM file?
VLC opens most RM files on Windows, macOS and Linux through its built-in libavformat decoder, which covers the common RealVideo codecs. RealPlayer itself still exists for Windows, Android and iOS, but RealNetworks stopped releasing it for macOS in 2018.
What should I convert an old RM file to?
MP4 with H.264 is the safe target for an old RM file, since it plays everywhere RealMedia no longer does, from phones to browsers to any current editing software.
Is RealMedia still used for anything?
No. RealMedia was the dominant streaming format before broadband made Flash and later HTML5 video practical, and it has had no meaningful new use since. An RM file today is almost always old footage someone is trying to recover, not something being created.