Convert QT to AVI — Free Online Converter
Convert QuickTime (.qt) to Audio Video Interleave (.avi) online for free. Fast, secure video conversion with no watermarks or registration....
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Upload your .mov file by dragging it into the upload area or clicking to browse.
Choose your output settings. The default settings work great for most files.
Click Convert and download your .avi file when it's ready.
About MOV to AVI Conversion
AVI (Audio Video Interleave) is Microsoft's venerable multimedia container introduced with Windows 3.1 in 1992 — just one year after Apple launched QuickTime. While QT uses Apple's atom/box structure that later informed the MP4 standard, AVI uses Microsoft's RIFF (Resource Interchange File Format) with interleaved audio and video chunks. Converting QT to AVI moves content from Apple's container to one of the most universally recognized video formats in computing history.
Why Convert MOV to AVI?
AVI is natively supported by every version of Windows since 3.1, most hardware media players, and virtually all video editing software including legacy applications that don't support QuickTime. If you're working in a Windows-centric environment or need to deliver video to systems without QuickTime support (which was deprecated on Windows in 2016), AVI is a reliable fallback.
Common Use Cases
- Opening QT videos in Windows-only editing software that lacks QuickTime support
- Preparing QT content for hardware media players that support AVI but not QT/MOV
- Delivering video from Mac-based production to Windows-based post-production teams
- Creating compatible files for older video surveillance and monitoring systems
- Converting QT files for use in legacy Windows presentation software
How It Works
FFmpeg reads the QT atom hierarchy, extracts video and audio elementary streams, and re-muxes (or re-encodes) them into AVI's RIFF structure. Common output codecs include MPEG-4 Part 2 (DivX/Xvid compatible) or H.264 for video, with MP3 or PCM for audio. AVI's index structure is written at the end of the file (or optionally as OpenDML for files over 2GB).
Quality & Performance
When using the same codec and bitrate, quality is identical — the container doesn't affect video/audio quality. If re-encoding is needed (e.g., ProRes to MPEG-4), quality depends on the target bitrate. AVI at the same bitrate as the QT source produces visually equivalent results.
Device Compatibility
| Device | MOV | AVI |
|---|---|---|
| Windows PC | Partial | Native |
| macOS | Partial | Partial |
| iPhone/iPad | Partial | Partial |
| Android | Partial | Partial |
| Linux | Partial | Partial |
| Web Browser | No | No |
Recommended Settings by Platform
YouTube
Resolution: 1920x1080
Bitrate: 8-12 Mbps
H.264 recommended for fast processing
Resolution: 1080x1080
Bitrate: 3.5 Mbps
Square or 9:16 for Reels
TikTok
Resolution: 1080x1920
Bitrate: 4 Mbps
9:16 vertical, under 60s ideal
Twitter/X
Resolution: 1280x720
Bitrate: 5 Mbps
Under 140s, 512MB max
Resolution: 960x540
Bitrate: 2 Mbps
16MB limit for standard, 64MB for document
Discord
Resolution: 1280x720
Bitrate: 4 Mbps
8MB free, 50MB Nitro
Tips for Best Results
- 1Use Xvid (MPEG-4 Part 2) video codec for the broadest AVI player compatibility — it works on virtually every hardware and software player.
- 2Choose MP3 audio instead of PCM to keep AVI file sizes manageable — PCM audio in AVI can triple the file size compared to compressed audio.
- 3If your AVI will exceed 2 GB, ensure your target player supports OpenDML/AVI 2.0 — some older players fail on large AVI files.
- 4For video editing workflows, consider using AVI with a high-quality intermediate codec (like HuffYUV) instead of lossy compression.
Related Conversions
QT to AVI conversion provides maximum compatibility with Windows systems and legacy hardware. Despite being an older format, AVI's universal support makes it the pragmatic choice for cross-platform video delivery when modern formats aren't an option.