AVI stands for Audio Video Interleave, a file with the AVI file extension is a commonly used as video or audio file format developed by Microsoft for storing both data in a single file. AVI file format was created by Microsoft Inc since in the year 1992 with intent of providing an advanced and robust audio and video file format for windows operating system. The Audio Video Interleave file format is based on the Resource Interchange File Format (RIFF), a container format used to store multimedia data. AVI is typically less compressed than other file formats, more popular like MOV and MPEG, it means that an AVI file will be larger than the same file in one of those more compressed formats.
Usually, the AVI files are stored in different storage medium that included memory cards, hard drives, SD cards, USB drives, MMC, MP3 players, iPods, Internal or external hard disk drives and so on. However, these video files may be lost or deleted due to various reasons including unintentional formatting, accidental deletion, reformatting, repartitioning, cut or move operations, interruption while reading / writing operations, abrupt system shutdown, deadly virus attack and similar more. To recover lost AVI data, recovery software is needed to come out this worst situation.