QT to Xvid - Online Video Converter
Convert QT to Xvid online. Private, client-side - no uploadrequired. Batch conversion, quality presets, codec control.
About QT to Xvid
Convert QT to Xvid. QT is the original QuickTime extension behind Apple's MOV container. Xvid is the open MPEG-4 ASP implementation behind many AVI files. Quarter-pixel motion can strain old decoders; convert for playback..
Why convert QT to Xvid?
- Smaller files with Xvid lossy compression.
- Keep animation and transparency where supported.
- Private, no upload - runs in your browser.
QT vs Xvid
| Animation | Yes | Yes |
|---|---|---|
| Transparency | Yes | No |
| Compression | lossy | lossy |
| Typical use | QT is the original QuickTime extension behind Apple's MOV container. | Xvid is the open MPEG-4 ASP implementation behind many AVI files. |
When not to convert QT to Xvid
- Skip Xvid for archival masters: lossy compression discards detail, so keep the QT original.
- Flatten transparency first: Xvid 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. Quarter-pixel motion can strain old decoders; convert for playback. Encode Xvid (MPEG-4 / 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.