AVI to MP4 Converter
Convert AVI videos to MP4 format with customizable quality settings. Modernize your legacy videos for universal compatibility across all devices and platforms.
🔒 Privacy First: All conversions happen locally in your browser. Your videos never leave your device.
Drop a video here or click to browse
Supports: MP4, WebM, AVI, MOV, MKV
Processing happens on your device. Speed depends on your machine's performance and file size.
How to Use the AVI to MP4 Converter
- Click "Choose File" and select your AVI video file from your device
- Preview your video to confirm it's the correct file
- Adjust quality settings using the CRF slider (lower values = better quality, larger files)
- Optionally configure advanced settings like resolution, frame rate, or bitrate
- Click "Convert to MP4" and wait for the conversion to complete
- Preview your converted MP4 video to verify the quality
- Click "Download MP4" to save the converted file to your device
Why Convert AVI to MP4?
Understanding AVI Format
AVI (Audio Video Interleave) is a legacy multimedia container format introduced by Microsoft in 1992. While it was groundbreaking for its time, AVI files tend to be very large because they often use older, less efficient compression codecs. AVI videos are primarily associated with Windows Media Player and legacy Windows systems. The format lacks modern features like adaptive streaming, chapter markers, and efficient compression, making it impractical for modern web use, mobile devices, and cloud storage.
Understanding MP4 Format
MP4 (MPEG-4 Part 14) is the most universally supported modern video format, compatible with virtually every device, browser, and media player. MP4 uses advanced H.264 or H.265 compression to deliver excellent video quality at significantly smaller file sizes compared to AVI. This makes MP4 ideal for streaming, sharing on social media, mobile playback, and cloud storage. MP4 also supports modern features like multiple audio tracks, subtitles, and chapter markers.
When to Convert AVI to MP4
Converting AVI to MP4 is essential for modernizing legacy video content. If you have old family videos, archived footage, or legacy Windows recordings stored as AVI files, converting them to MP4 makes them accessible on modern devices like smartphones, tablets, smart TVs, and gaming consoles. MP4's superior compression can reduce file sizes by 50-80% without visible quality loss, saving valuable storage space. This conversion is also necessary for uploading videos to YouTube, social media platforms, or any modern video hosting service that doesn't support the outdated AVI format.
Best use cases:
- Digitizing old family videos or VHS tapes originally captured as AVI
- Reducing file sizes of large AVI archives to save storage space
- Making legacy Windows videos playable on iPhones, iPads, and Android devices
- Uploading old recordings to YouTube, Facebook, Instagram, or TikTok
- Creating video libraries that work across all modern platforms
- Preparing legacy footage for video editing in modern software
Quality Settings for AVI to MP4
When converting AVI to MP4, quality settings determine the balance between file size and visual quality. Our converter uses the CRF (Constant Rate Factor) scale where lower values produce better quality but larger files.
Recommended CRF Settings for MP4:
- CRF 18-20: Best quality - Excellent for preserving original AVI quality, archival purposes, or further editing. File sizes will be moderate.
- CRF 23 (Default): Balanced - Good quality with reasonable file sizes. Recommended for most AVI conversions and general viewing.
- CRF 26-28: Smaller files - Acceptable quality with significant file size reduction. Good for sharing and streaming legacy content.
Bitrate Recommendations:
For precise control over file size, you can specify exact bitrates:
- 1080p HD: 5000-8000 kbps for high quality, 3000-5000 kbps for balanced
- 720p HD: 2500-4000 kbps for high quality, 1500-2500 kbps for balanced
- 480p SD: 1000-2000 kbps (suitable for most legacy AVI content)
Note: Since AVI files are often recorded with older cameras or capture cards, the original quality may be 480p or 720p. Using very high quality settings won't improve the source material but will increase file size unnecessarily.
Features
🔒 Complete Privacy
All video processing happens in your browser. Your AVI files never get uploaded to any server.
âš¡ Fast Conversion
Convert AVI to MP4 quickly using WebAssembly technology. Processing speed depends on your device's capabilities.
📱 Universal Compatibility
MP4 works on all devices - smartphones, tablets, computers, smart TVs, and gaming consoles.