QT to SWF - Online Video Converter
Convert QT to SWF online. Private, client-side - no uploadrequired. Batch conversion, quality presets, codec control.
About QT to SWF
Convert QT to SWF. QT is the original QuickTime extension behind Apple's MOV container. SWF is Adobe's interactive Flash format mixing vector animation with video. Only the embedded video track converts; scripts and buttons are dropped..
Why convert QT to SWF?
- Smaller files with SWF lossy compression.
- Keep animation and transparency where supported.
- Private, no upload - runs in your browser.
QT vs SWF
| Animation | Yes | Yes |
|---|---|---|
| Transparency | Yes | No |
| Compression | lossy | lossy |
| Typical use | QT is the original QuickTime extension behind Apple's MOV container. | SWF is Adobe's interactive Flash format mixing vector animation with video. |
When not to convert QT to SWF
- Skip SWF for archival masters: lossy compression discards detail, so keep the QT original.
- Flatten transparency first: SWF 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. Only the embedded video track converts; scripts and buttons are dropped. Encode SWF (Sorenson Spark / MP3) 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.