QT to RM - Online Video Converter
Convert QT to RM online. Private, client-side - no uploadrequired. Batch conversion, quality presets, codec control.
About QT to RM
Convert QT to RM. QT is the original QuickTime extension behind Apple's MOV container. RM is RealNetworks' streaming container pairing RV video with Cook audio. Decoding paths for early Real codecs are scarce; try remuxing first..
Why convert QT to RM?
- Smaller files with RM lossy compression.
- Keep animation and transparency where supported.
- Private, no upload - runs in your browser.
QT vs RM
| Animation | Yes | Yes |
|---|---|---|
| Transparency | Yes | No |
| Compression | lossy | lossy |
| Typical use | QT is the original QuickTime extension behind Apple's MOV container. | RM is RealNetworks' streaming container pairing RV video with Cook audio. |
When not to convert QT to RM
- Skip RM for archival masters: lossy compression discards detail, so keep the QT original.
- Flatten transparency first: RM has no alpha channel, so composite QT over a background color.
Limits
Starting point: QT - QT is the original QuickTime extension behind Apple's MOV container. Same container as MOV under the older extension name. Decoding paths for early Real codecs are scarce; try remuxing first. Encode RM (RV10 / AC-3) from QT at a bitrate near the source, and confirm the audio track before converting.
How conversion works
Conversion runs entirely in your browser with FFmpeg WASM. Files never leave your device.