Convert MP4 to AVI Online - Free
Convert MP4 videos to AVI format online for free. AVI provides wide compatibility with older media players and editors.
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Max file size: 500MB
Your files are processed locally in your browser. Nothing is uploaded to any server.
How to Convert MP4 to AVI
Upload MP4 File
Select the MP4 video you want to convert to AVI format. Supports all MP4 files with any codec.
Convert to AVI Format
Choose AVI as the output format. The converter handles codec transcoding automatically in your browser.
Download AVI Video
Save the converted AVI file. It is now compatible with older media players and legacy video editing software.
Frequently Asked Questions
Why would I convert MP4 to AVI?
AVI is needed for compatibility with some older video editing software, legacy media players, and specific hardware devices that do not support MP4. Certain professional video workflows and older DVD authoring tools also require AVI input format for proper processing.
Is AVI better quality than MP4?
AVI is a container format, not a codec, so quality depends on the codec used inside it. Modern MP4 with H.264 typically delivers better compression efficiency than common AVI codecs. AVI files are usually larger at equivalent quality because they often use less efficient compression methods.
Will the AVI file be larger than the MP4?
Yes, AVI files are generally larger than MP4 because the AVI container and its typical codecs are less efficient at compression. Expect the AVI output to be 50-200% larger depending on the codec and settings used. This is the trade-off for broader compatibility with legacy systems.