QT to MP4 (H.265) - Online Video Converter
Convert QT to MP4 (H.265) online. Private, client-side - no uploadrequired. Batch conversion, quality presets, codec control.
About QT to MP4 (H.265)
Convert QT to MP4 (H.265). QT is the original QuickTime extension behind Apple's MOV container. MP4 (H.265) stores HEVC video, cutting bitrate roughly in half versus H.264. HEVC decoding needs newer hardware and encodes more slowly..
Why convert QT to MP4 (H.265)?
- Smaller files with MP4 (H.265) lossy compression.
- Keep animation and transparency where supported.
- Private, no upload - runs in your browser.
QT vs MP4 (H.265)
| Animation | Yes | Yes |
|---|---|---|
| Transparency | Yes | No |
| Compression | lossy | lossy |
| Typical use | QT is the original QuickTime extension behind Apple's MOV container. | MP4 (H.265) stores HEVC video, cutting bitrate roughly in half versus H.264. |
When not to convert QT to MP4 (H.265)
- Skip MP4 (H.265) for archival masters: lossy compression discards detail, so keep the QT original.
- Flatten transparency first: MP4 (H.265) 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. HEVC decoding needs newer hardware and encodes more slowly. Encode MP4 (H.265) (H.265 / 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.