QT to M4V - Online Video Converter
Convert QT to M4V online. Private, client-side - no uploadrequired. Batch conversion, quality presets, codec control.
About QT to M4V
Convert QT to M4V. QT is the original QuickTime extension behind Apple's MOV container. M4V is Apple's DRM-capable MP4 variant used for store-bought video. Copy-protected purchases cannot be converted; use DRM-free sources..
Why convert QT to M4V?
- Smaller files with M4V lossy compression.
- Keep animation and transparency where supported.
- Private, no upload - runs in your browser.
QT vs M4V
| Animation | Yes | Yes |
|---|---|---|
| Transparency | Yes | No |
| Compression | lossy | lossy |
| Typical use | QT is the original QuickTime extension behind Apple's MOV container. | M4V is Apple's DRM-capable MP4 variant used for store-bought video. |
When not to convert QT to M4V
- Skip M4V for archival masters: lossy compression discards detail, so keep the QT original.
- Flatten transparency first: M4V 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. Copy-protected purchases cannot be converted; use DRM-free sources. Encode M4V (H.264 / AAC) 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.