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QT to MP4 (H.264) - Online Video Converter
Convert QT to MP4 (H.264) online. Private, client-side - no uploadrequired. Batch conversion, quality presets, codec control.
Convert QT to MP4 (H.264)
Drop QT video here or click to select
QT, MOV
MP4 (H.264) (H.264 / AAC)
About QT to MP4 (H.264)
Convert QT to MP4. QT is the original QuickTime extension behind Apple's MOV container. MP4 pairs H.264 video with AAC audio in the ISO base media container. H.264 has no alpha channel, so transparency is dropped..
Why convert QT to MP4 (H.264)?
- Smaller files with MP4 lossy compression.
- Keep animation and transparency where supported.
- Private, no upload - runs in your browser.
QT vs MP4 (H.264)
| Animation | Yes | Yes |
|---|---|---|
| Transparency | Yes | No |
| Compression | lossy | lossy |
| Typical use | QT is the original QuickTime extension behind Apple's MOV container. | MP4 pairs H.264 video with AAC audio in the ISO base media container. |
When not to convert QT to MP4 (H.264)
- Skip MP4 for archival masters: lossy compression discards detail, so keep the QT original.
- Flatten transparency first: MP4 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. H.264 has no alpha channel, so transparency is dropped. Encode MP4 (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.
Related conversions
FAQ
How do I convert QT to MP4 (H.264)?
Drop your QT file onto this page, choose quality and codec settings, then click Convert. The result downloads as MP4 (H.264) instantly. All processing runs in your browser.
What codec is used for MP4 (H.264)?
The default codec for MP4 (H.264) is H.264 / AAC. You can change the video and audio codec in Advanced mode.
How do you store my files?
We do not store any processed videos. All conversion happens entirely in your browser using FFmpeg WASM.