Tools Just Right Logo Tools... Just Right
← Back to Home

MP4 to AVI Converter

Convert MP4 videos to AVI format. Completely free to use with no sign-ups or watermarks.

🔒 All conversions happen 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 Convert MP4 to AVI

  1. Select your MP4 video: Click the upload area or drag and drop your MP4 file.
  2. Preview your video: Once uploaded, you'll see a preview player with your MP4 video and file size.
  3. Click "Convert to AVI": The conversion button will process your video using WebAssembly technology.
  4. Adjust quality (optional): Use Advanced Options to control CRF quality or set exact bitrate.
  5. Resize or adjust FPS (optional): Set maximum dimensions or frame rate in Advanced Options.
  6. Convert to other formats: Access WebM, MOV, or MKV conversions in Advanced Options.
  7. Download instantly: Your AVI file downloads automatically when conversion completes.

Why Convert MP4 to AVI?

Understanding MP4 Format

MP4 (MPEG-4 Part 14) is the modern standard for video, offering excellent compression with H.264/H.265 codecs and AAC audio. It's universally compatible with modern devices, smartphones, and streaming platforms. MP4 excels at efficient compression, making files smaller while maintaining quality, ideal for web distribution and mobile playback.

Understanding AVI Format

AVI (Audio Video Interleave) is a multimedia container format introduced by Microsoft in 1992. AVI supports multiple video and audio codecs, making it highly flexible. While AVI files are typically larger than MP4, they offer excellent compatibility with Windows systems, legacy video editing software, and older media players. AVI is widely supported by desktop video editors and works seamlessly with Windows Media Player without requiring additional codecs.

When to Convert MP4 to AVI

Converting MP4 to AVI is essential when working with legacy Windows systems, older video editing software that doesn't support MP4, or when you need compatibility with vintage media players and DVD authoring tools. AVI is the preferred format for many professional Windows-based video editing suites and works flawlessly with older capture cards and encoding hardware that don't recognize modern MP4 containers.

Best use cases for AVI: Windows Media Player compatibility, legacy video editing software (early versions of Adobe Premiere, Sony Vegas), DVD authoring, compatibility with older TVs and media players, video capture from analog sources, and archival storage where format longevity matters. AVI's simple structure makes it reliable for long-term storage.

This free online MP4 to AVI converter uses FFmpeg WebAssembly technology to process conversions entirely in your browser. No uploads, complete privacy, and your videos never leave your device.

Understanding Quality Settings for MP4 to AVI Conversion

Control your MP4 to AVI conversion quality with these advanced settings:

  • CRF (Constant Rate Factor): For AVI conversion, CRF values of 18-23 provide excellent quality. Lower values (15-17) create larger files with superior quality, while higher values (24-28) reduce file size with acceptable quality loss. AVI files are typically larger than MP4, so balance quality with storage needs.
  • Bitrate Mode: Set exact bitrates for precise file size control. Recommended: 2000-4000 kbps for 480p, 4000-8000 kbps for 720p, 8000-15000 kbps for 1080p. AVI's less efficient compression means higher bitrates than MP4 for similar quality.
  • Resolution Control: Reduce dimensions to manage AVI's larger file sizes. Downscaling from 1080p to 720p can reduce file size by 50-60%, making AVI more manageable for storage-constrained systems.
  • Frame Rate Control: Adjust FPS for compatibility with legacy systems. 24 fps for film content, 29.97 fps for NTSC video, 25 fps for PAL video, or 30 fps for standard playback.

All conversions are 100% free with unlimited use. Processing happens on your device - speed depends on your hardware performance and file size.

🔒

100% Private

All processing happens in your browser, videos never uploaded

⚡

Fast & Free

Instant MP4 to AVI conversion, completely free forever

🎬

Windows Compatible

AVI works perfectly with Windows systems and legacy software