What are the common video file formats?

Common video file formats are: 1. avi format, a video format released by Microsoft; 2. wmv format, a technical standard for real-time dissemination of multimedia on the Internet that is independent of encoding methods; 3. mpeg format is a variety of video formats; 4. mp4 format is a set of compression coding standards for audio and video information.

#The operating environment of this article: Windows 7 system, Dell G3 computer.

Common video file formats are: avi, wmv, mpeg, mp4, m4v, mov, asf, flv, f4v, rmvb, rm, 3gp, vob, etc.

avi format

AVI, a video format released by Microsoft, can be said to be one of the oldest formats in the video field. The AVI format is easy to call, has good image quality, and the compression standard can be chosen arbitrarily. It is one of the most widely used and longest-used formats.

wmv format

A technical standard for real-time dissemination of multimedia on the Internet that is independent of encoding methods. Microsoft hopes to use it to replace technical standards such as QuickTime and File extensions like WAV, AVI. The main advantages of WMV are: scalable media types, local or network playback, scalable media types, stream prioritization, multi-language support, scalability, etc.

mpeg format

MPEG is a variety of video formats including MPEG-1, MPEG-2 and MPEG-4. The MPEG series standards have become the most influential multimedia technology standards in the world. MPEG-1 and MPEG-2 are the first generation data compression coding technologies based on the same principles, such as predictive coding, transform coding, entropy coding and motion compensation; MPEG -4 (ISO/IEC 14496) is an international standard based on the second generation compression coding technology. It uses audio-visual media objects as the basic unit and uses content-based compression coding to realize digital video and audio, graphics synthesis applications and interactive Multimedia integration.

The MPEG series standards have had a huge and far-reaching impact on the development of audio-visual consumer electronics such as VCD and DVD, as well as digital TV, high-definition TV (DTV&&HDTV), multimedia communications and other information industries.

mp4 format

MP4 is a set of compression coding standards for audio and video information. The main uses of the MPEG-4 format are online streaming, optical discs, and voice transmission ( video calls), and television broadcasts.

m4v format

M4V is a video format used on online video on demand websites and mobile handheld devices. It is a special type of MP4 format, and its suffix is ​​often It is .MP4 or .M4V, its video encoding uses H264, and its audio encoding uses AAC.

mov format

MOV is the QuickTime movie format. It is an audio and video file format developed by Apple and is used to store common digital media types. Used to save audio and video information, even supported by all mainstream computer platforms including WINDOWS7.

asf format

ASF is a file compression format developed by MICROSOFT in order to compete with Real Player that can directly watch video programs online. ASF uses the MPEG4 compression algorithm, and the compression rate and image quality are very good. Because ASF exists in a video "stream" format that can be watched instantly on the Internet, it is not surprising that its image quality is a little worse than VCD, but better than the RAM format, which is also a video "stream" format.

flv format

FLV is the abbreviation of FLASH VIDEO, and the FLV streaming format is a new video format. Because the files it forms are extremely small and the loading speed is extremely fast, it makes it possible to watch video files on the Internet. Its appearance effectively solves the problem that after the video files are imported into Flash, the exported SWF file is bulky and cannot be used well on the Internet. and other shortcomings.

F4V format

F4V As a format that is smaller, clearer, and more conducive to network dissemination, F4V has gradually replaced the traditional FLV and has been used by most Mainstream players are compatible for playback without the need for complicated methods such as conversion. F4V is the F4V streaming media format that supports H.264 and is launched by Adobe to welcome the high-definition era after the FLV format. The main difference between it and FLV is that the FLV format uses H263 encoding, while F4V supports H.264 encoded high-definition video with a bit rate up to 50Mbps. In other words, F4V and FLV can achieve higher resolution and support higher bit rates under the premise of the same size, which is what we call clearer and smoother. In addition, the suffix of F4V files downloaded from many mainstream media websites is FLV. This is another characteristic of the F4V format and is a normal phenomenon. When watching, you can clearly feel that this FLV, which is actually F4V, has significantly higher definition and fluency.

rmvb format

RMVB is a video file format, where VB refers to Variable Bit Rate. Compared with the previous generation RM format, the picture is much clearer because the bit rate of static pictures is reduced.

rm format

RM format is a streaming video file format developed by RealNetworks. It can formulate different compression ratios according to different rates of network data transmission, thereby Real-time transmission and playback of video files on low-speed Internet.

3gp format

3GP is a video encoding format for 3G streaming media. It was mainly developed to match the high transmission speed of 3G networks. It is also the most common video format in mobile phones currently.

3GP is a multimedia standard developed by the "3rd Generation Partnership Project" (3GPP), which enables users to enjoy high-quality video, audio and other multimedia content using mobile phones. Its core consists of advanced audio coding (AAC), adaptive multi-rate (AMR) and MPEG-4 and H.263 video codecs. Currently, most mobile phones that support video shooting support video playback in 3GPP format.

vob format

VOB is a container format used by DVD video media. VOB multiplexes digital video, digital audio, subtitles, DVD menus and navigation and other content in a streaming format. Files in VOB format can be protected by encryption.

VOB is often used in DVD video objects. It is the key file on the DVD disc and contains the actual data of the DVD video. In fact, the VOB file is a basic MPEG-2 data stream, including a multi-channel composite MPEG-2 video data stream, audio data stream (usually encoded in AC3 format) and subtitle data stream.

VOB files are used to save all audio and video data in MPEG-2 format. These data not only include the video itself, but also pictures for menus and buttons, and sub-picture streams for various subtitles.

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