The Audio Video Interleave format, shortened to the AVI extension, is a video file format created by Microsoft. AVI files employ efficiently minimal compression, resulting in large file sizes with high-resolution video. Most video programs can interpret AVI files, but users may wish to convert AVIs into the MPEG-4 (MP4) container for certain uses, such as for playing back the videos on portable devices like the iPod. A slew of free online tools can turn your AVIs into MP4s for free.
Navigate to Zamzar in a Web browser.
Click "Choose File" and find the AVI you wish to convert. Next, select "MP4" for your target container. Free users of Zamzar only upload files up to 100MB in size.
Type in your email address and click "Convert." You'll be sent you an email containing your MP4 inside of a download link.
Go to Mediaconverter in any browser.
Click the "Upload a file" button and find the AVI. Afterwards, select "MP4" for your output container. Mediaconverter restricts upload size to 100MB for free users.
Click "Start" to create the new file. After the conversion winds down, click the download link to grab your MP4.
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