Convert MP4 to RM Online — Free
Fast, free MP4 to RM converter. No registration required.
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How to Convert
Upload your .mp4 file by dragging it into the upload area or clicking to browse.
Choose your output settings. The default settings work great for most files.
Click Convert and download your .rm file when it's ready.
What is MP4?
MP4 is the most widely used video container format. It stores video, audio, subtitles, and metadata. Compatible with virtually every device and platform, from smartphones to smart TVs.
Format Details
- Full Name
- MPEG-4 Part 14
- Extension
- .mp4
Key Features
- Universal compatibility
- Streaming support
- Small file sizes
- Hardware-accelerated playback
What is RM?
RM is RealNetworks' proprietary multimedia container format. It was the dominant streaming video format on the early internet through RealPlayer but has been largely obsoleted by modern codecs and containers.
Format Details
- Full Name
- RealMedia
- Extension
- .rm
Key Features
- Streaming format
- Low bandwidth
- Legacy support
- RealPlayer native
MP4 vs RM
| Feature | MP4 | RM |
|---|---|---|
| Full Name | MPEG-4 Part 14 | RealMedia |
| Extension | .mp4 | .rm |
| Best For | Universal compatibility | Streaming format |