MP4 to AVI Converter

1. Upload your MP4 file (up to 500 MB).
2. Click 'Convert MP4 to AVI' — takes 30 seconds to 3 minutes.
3. Download the AVI — ready for legacy playback.

AVI is a legacy Windows format from 1992 — many older software, DVD players, and industrial systems still require it. Converting MP4 to AVI makes your video compatible with these legacy workflows.

AVI is a legacy format from 1992, but it's still required by some older software, DVD players, point-of-sale systems, and industrial equipment. Converting MP4 to AVI makes your video compatible with these legacy workflows. Video is encoded with MPEG-4 Part 2 or H.264 in an AVI container.

The converter decodes the MP4 video and re-encodes it as MPEG-4 Part 2 (or H.264) in an AVI container with MP3 audio. Resolution and frame rate are preserved. Output is a standard AVI file that plays on legacy systems.

• Converting MP4 for legacy DVD players.
• Preparing video for older industrial or POS systems.
• Submitting to platforms that require AVI.
• Editing in legacy video software.
• Preparing video for DVD authoring.
• Converting MP4 for older Windows software.
• Standardizing a mixed MP4/AVI library to AVI.

MP4 → AVI preserves visual quality while converting to the AVI container. File size may be larger because AVI is less efficient than MP4 — typically 20-50% larger.

• AVI files are 20-50% larger than MP4 (less efficient).
• Modern H.264 MP4 is better quality than legacy AVI codecs.
• Multiple audio tracks are reduced to the first track.
• Subtitles and chapters are not preserved.
• AVI isn't supported by most modern streaming platforms.

• Output AVI plays on Windows Media Player, VLC, and legacy DVD players.
• Accepted by older editing software and industrial systems.
• Compatible with DVD authoring tools.
• Standard AVI — widely supported on Windows.
• Not recommended for modern streaming or mobile.

• AVI is best for legacy systems — not for modern playback.
• AVI files are 20-50% larger than MP4.
• For modern playback, keep the MP4 original.
• For DVD authoring, check the software's preferred AVI codec.
• For streaming platforms, AVI is usually not accepted.

File size increased significantly

AVI is less efficient than MP4. A 100 MB MP4 often becomes 150 MB AVI. This is expected.

AVI doesn't play on modern device

Modern phones and tablets often don't support AVI. For modern playback, keep the MP4.

Some software still can't open the AVI

The software may require a specific AVI codec (DivX, Xvid). Try a dedicated converter with codec options.

• Microsoft — AVI Format
• MPEG — MP4 Specification