There are two major fields in any atom before any other field: Size and Type fields. AtomsĪtom is the basic unit of the QuickTime file. For the storage of movies on disks, QuickTime uses two structures i.e. The file format consists of a flexible collection of object-oriented objects. It is an idea format for exchange of digital media as the format defines the standards for describing any kind of media structures. In order to work with digital multimedia, QTFF can hold many kinds of data. QuickTime File Format (QTFF) - More Information Therefore, now it is used as a basis for various other multimedia file formats. In 2004, MP4 was generalized to define a general structure for all time-based media files.

The International Organization of Standardization approved the format and the MPEG-4 Part 1 systems specifications were published in 1999.In 2001, a revision file format MP4 was published. MPEG-4 file format has evolved from QuickTime File Format ( QTFF) specification in 2001. It uses MPEG-4 coded for compression and tracks are maintained in objects called atoms which are placed in a hierarchical data structure. MOV video format is compatible with both Windows and Macintosh systems. It is a multimedia container that can store different type of media elements. Each track stores a movie, audio, movie clips, and subtitles. A MOV file is a video file type, developed by Apple Inc., that contains one or more tracks.

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