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FFmpegFreeOfflineBatch

AVI to MP4 converter

Convert AVI files to MP4 on Windows 10 and 11: free, offline and in batches. Drag the files onto MP4 in Filee's format donut and the MP4 files appear next to the originals.

Download for Windows How it works

How to convert AVI to MP4 on Windows

  1. 1

    Select your AVI files

    In File Explorer or on the desktop, select one AVI file or as many as you like. The first time, Filee offers to download FFmpeg, the free engine it uses for this conversion.

  2. 2

    Hold Ctrl and drag

    Hold Ctrl (or the key you set in Filee) and drag the files. A donut of formats opens at the cursor. Prefer menus? Right-click and choose Convert with Filee.

  3. 3

    Drop on MP4

    Release the files over MP4. A progress ring counts up, and each MP4 file is saved next to its original.

What Filee does for AVI → MP4

AVI files from old camcorders and cameras are large and often use codecs that phones and TVs no longer play. An MP4 with modern compression is usually much smaller and plays everywhere.

  • Uses FFmpeg, a free optional engine that Filee downloads once into its own folder (about 100 MB). Programs installed on your PC are never used.
  • The MP4 720p preset shrinks large videos for sharing.
  • Batch: one file or hundreds, converted in parallel; a failure never stops the rest.
  • Private: files are converted on your PC and never uploaded, even without internet.
  • Saved next to the original, or in a folder and with a file name pattern you choose.

AVI can also become

  • WEBM
  • MOV
  • MKV
  • GIF
  • MP3
  • M4A

About AVI and MP4

AVI

AVI video

AVI is Microsoft's video container from the 1990s. Camcorders, older cameras and archives still hold AVI files, which are often large and poorly supported on phones.

Extensions: .avi .divx

All video formats

MP4

MPEG-4 video

MP4 (MPEG-4 Part 14) is the most compatible video format. It plays on phones, TVs, browsers and every video site, usually with H.264 or H.265 video and AAC audio.

Extensions: .mp4 .m4v

All video formats

Convert AVI to MP4 for free

Filee is a free, open-source file converter for Windows 10 and 11. It works offline and converts 180+ formats with one drag and drop.

Download for Windows

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