AVI is a multimedia container file format which can contain both audio and video data that allows synchronous audio-with-video playback. This file format was introduced by Microsoft in 1992 as part of its Video for Windows technology. Just like the DVD video format, AVI files support multiple streaming of audio and video. But these features are seldom used.
1. Online AVI Video Converter : This AVI converter converts your video files to AVI in high quality. This is an online converter and supports over 50 source formats to AVI. You can convert from MKV to AVI, MP4 to AVI, FLV to AVI, MPEG to AVI, MOV to AVI, WMV to AVI and many more. You just need to upload a source video file or provide a URL to the video and change some optional settings and click the “Convert file” button. Your video is converted to AVI format.
2. Total Movie Converter : This software is an offline installer and can convert video files of almost all popular video codecs to AVI, MPG, WMV, MPEG, FLV. TMC requires no special knowledge to convert video files. You can also use batch conversion mode to save your time and effort. TMC also converts video from YouTube, Vimeo and Sevenload to AVI and other different formats you like. All you have to do is enter the URL of the video. You can increase volume of video files, adjust Audio/Video bitrate, Frame rate, cut any piece of your movie or combine video. The new version also has the de-interlace feature.
3. Alive Video Converter: This software an all-in-one video converter software to convert video files from one format to another and extract audio tracks from video. It allows you to convert all popular video formats including AVI, DivX, XviD, MPEG, WMV, MOV, ASF, QuickTime, MP4, 3GP, 3G2, MOD, FLV, dvr-ms, VOB to iPod, PSP, Zune, mobile 3GP and 3G2, you can also convert the above video formats to AVI, DivX, XviD, DVD, SVCD, VCD, MPEG-1, MPEG-2, WMV, ASF, VOB, MOV format
The free trial version is 6.38 MB size and you can evaluate only for 20 days. Also during the trial period AVC converts only 60% of each file. The minimum requirements of hardware are a Pentium 133 and 32 MB of RAM. It works on XP. Though the official page doesn’t support Vista and 7, they should work.
To see the download link for the trial software and the steps to perform for conversion are listed in this link. There is a free version to download and also a paid version. The paid version costs only $29.90.
In addition to the above there are better video converters like HandBrake, FormatFactory, VSDC Free Video Converter which not only convert video files to AVI format but to mobile formats like 3GP and also iPod, iPad and iPhone formats.