There are many paid and free software downloads available on the Internet for converting AVI files into their MP4 versions. You may use Leawo Converter, OJOsoft Total Video Converter, and Xilisoft MP4 Converter for the purpose. These software programs not only support AVI, DivX, and Xvid, but also WMA, MOV, H.264, MPEG1/MPEG2 video formats. Different programs offer different conversion formats. They help you convert your favorite video or music file into a file format that is easily playable on a portable device like an iPod.
All you need to do is purchase and download any of the programs listed above, and save it on your PC. Then you need to run the setup and install the software. Once installed, you need to open the program and add the .avi video file, which needs conversion. Follow the instructions and convert your file into MP4 format. Save the file after converting and transfer it to your portable device for playback.
If you do not wish to download, buy, or get registered for a software, you can always opt for sites that are known for converting AVI files to MP4 online. There is no download or registration required for such websites. All you need to do is choose the file you need to convert on your computer drive and submit it on the website converter. The website software will convert the file into MP4 format online and when finished, you will be prompted to save the file on your computer. These sites are accessible anywhere around the world and one can convert audio, video, presentations, documents and spreadsheets, etc. However, these sites tend to be a bit slow and large files take longer to get converted. It may take about 2 to 4 hours or even 24 hours to convert these large files online.
It is recommended that you go for a free or paid software for the conversion, as online services are time consuming and therefore, not feasible.