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Convert AVI to MP4 Online (Fast + Compatible)

Convert AVI to MP4 in minutes with IloveMP4. Fix playback issues, reduce file size, and make your video work on phones, TVs, and social platforms.

Convert AVI to MP4 Online (Fast + Compatible)

AVI videos often fail to play smoothly on modern devices, browsers, and apps.
Converting AVI → MP4 is the simplest way to fix “unsupported format” errors and make your file easy to share.

Quick steps: convert AVI to MP4

  1. Upload your AVI file

    • Open IloveMP4 in your browser.
    • Drag & drop your .avi file (or click to select it).

  2. Choose MP4 as output

    • Select MP4 as the target format.
    • Keep the same resolution unless you specifically want to downsize (1080p → 720p).

  3. Convert and download

    • Click “Convert now”.
    • Download your new .mp4 file and play it anywhere.

Ready right now? Convert AVI to MP4

Why convert AVI to MP4?

MP4 is the most widely supported video format today. Switching from AVI to MP4 gives you:

  • Better compatibility: phones, tablets, TVs, Chrome/Firefox/Safari, and most editors.
  • Easier sharing: upload to YouTube, TikTok, Instagram, Google Drive, etc.
  • Smoother playback: fewer glitches, missing audio issues, and codec errors.
  • Smaller files (often): MP4 compression is usually more efficient than legacy AVI encodes.

Best settings for a clean AVI → MP4 result

If you have a choice of settings, this usually works well:

  • Resolution: keep the original (don’t upscale).
  • Frame rate: keep the original (avoid converting 24 → 60 unless needed).
  • Quality/bitrate: pick “high” for editing, “standard” for sharing.

Common AVI problems (and how MP4 fixes them)

  • “Codec missing” / “can’t decode video”: AVI files often rely on older codecs that aren’t installed.
  • Audio out of sync: re-encoding into a modern container can stabilize playback.
  • Huge file size: MP4 can compress better for the same visual quality.

FAQ: AVI to MP4

Will converting AVI to MP4 reduce quality?

It can, but with sensible settings the result is usually visually identical for normal viewing.

Can I convert multiple AVI files at once?

Yes — batch conversion is ideal if you have a folder of AVI videos.

Why does my AVI play with no sound?

Many AVI files use legacy audio codecs. Converting to MP4 typically fixes this by outputting a widely supported audio track.