Five common file types: 1. Text file type, with the suffix "txt"; 2. Video file format type, with the suffix "mp4"; 3. Audio file format type, with the suffix "mp4" "mp3"; 4. The image file format type, the suffix is "jpg"; 5. The executable file format type, the suffix is "exe".
#1. Text file type.
Text file types: including ASCII, MIME, .txt and other formats.
(1) The ASCII standard allows text files containing only ASCII characters to be freely interchangeable between Unix, Macintosh, Microsoft Windows, DOS and other operating systems.
(2) The type of text file in the MIME standard is "text/plain". In addition, it usually also has encoding information attached. Before Mac OS X appeared, when Resource fork specified the type of a file as "TEXT", Mac OS considered the file to be a text file.
(3).txt is the extension of a text file that contains very little formatting information. The .txt format is not clearly defined, it usually refers to those formats that can be accepted by the system terminal or a simple text editor.
2. Video file format type.
Video file formats have different classifications, such as:
(1) Microsoft Video: wmv, asf, asx.
(2) Real Player: rm, rmvb.
(3)MPEG video: mp4.
(4) Mobile phone video: 3gp.
(5) Apple Video: mov, m4v.
(6) Other common videos: avi, dat, mkv, flv, vob, etc.
3. Audio file format type.
Audio file format types: including Wave, AIFF, Audio, MPEG, RealAudio, MIDI and other formats.
(1) Wave format is a sound file format developed by Microsoft. It conforms to the PIFF (Resource Interchange File Format) file specification and is used to save audio information resources of the WINDOWS platform. It is used by the WINDOWS platform and its applications. supported by the program.
(2) AIFF is the English abbreviation of Audio Interchange File Format, an audio file format developed by Apple Computer Company.
(3) Audio file is a compressed digital audio format launched by Sun Microsystems. It is a commonly used sound file format on the Internet.
(4) MPEG (Moving Picture Experts Group) represents the moving image compression standard. The audio file format here refers to the audio part of the MPGE standard.
(5) RealAudio file is a new streaming audio (Streaming Audio) file format developed by RealNetworks. It is included in RealMedia, the audio and video compression specification developed by RealNetworks. It is mainly used for low-end applications. Real-time transmission of audio information over a wide area network at a high speed.
(6) MIDI (Musical Instrument Digital Interface) is a unified international standard for digital music/synthetic instruments. It defines the way computer music programs, synthesizers and other electronic devices exchange music signals.
4. Picture file format type.
Image format is the format in which image files are stored, usually JPEG, TIFF, RAW, BMP, GIF, PNG, etc. Since the image files captured by digital cameras are large and the storage capacity is limited, the images are usually compressed before being stored.
5. Executable file format type.
Executable file (executable file) refers to a file that can be loaded and executed by the operating system. In different operating system environments, executable programs are presented differently. Under the Windows operating system, executable programs can be .exe files, .sys files, .com and other types of files.
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