the common video file formats are avi, wmv, mpeg, mp4, m4v, mov, asf, flv, f4v, rmvb, rm, 3gp, vob and so on.
avi format
AVI, a video format released by Microsoft, is one of the oldest formats in the video field. AVI format is convenient to call, has good image quality, and the compression standard can be selected at will. It is one of the most widely used and longest-lasting formats.
wmv format
a technical standard for real-time multimedia transmission on the Internet independent of coding mode. Microsoft hopes to use it to replace technical standards such as QuickTime and file extensions such as WAV and AVI. The main advantages of WMV are: scalable media types, local or network playback, scalable media types, stream prioritization, multilingual support, scalability, etc.
mpeg format
MPEG is a variety of video formats including MPEG-1,MPEG-2 and MPEG-4. MPEG series standards have become the most influential multimedia technical standards in the world, among which MPEG-1 and MPEG-2 are the first generation data compression coding technologies based on the same principle, 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 takes audio-visual media objects as the basic unit and adopts content-based compression coding to realize the integration of digital audio-visual, graphic synthesis applications and interactive multimedia.
MPEG series standards have great influence on audio-visual consumer electronics such as VCD and DVD, digital TV and high definition TV (DTV&: & The development of information industry such as HDTV and multimedia communication has had a great and far-reaching impact.
mp4 format
MP4 is a set of compression coding standards for audio and video information, and MPEG-4 format is mainly used for online streaming, CD-ROM, voice transmission (video telephony) and TV broadcasting.
M4V format
M4V is a video format applied to network video-on-demand websites and mobile handheld devices, and it is a special type of MP4 format. Its suffix is usually .mp4 or .m4v. Its video coding adopts H264 and its audio coding adopts AAC.
mov format
MOV is QuickTime movie format, which is an audio and video file format developed by Apple company and used to store common digital media types. Used to store audio and video information, even supported by all major computer platforms including WINDOWS7.
asf format
ASF is a file compression format developed by MICROSOFT to compete with Real player, which can directly watch video programs online. ASF uses MPEG4-4 compression algorithm, and the compression rate and image quality are very good. Because ASF exists in a video "streaming" format that can be watched instantly on the Internet, it is not surprising that its image quality is a little worse than that of VCD, but it is better than that of RAM format which is also a video "streaming" format.
FLV format
FLV is short for FLASH VIDEO and flv streaming media format is a new video format. Because the file it forms is extremely small and the loading speed is extremely fast, it makes it possible to watch video files on the network. Its appearance effectively solves the shortcomings that the exported SWF file is huge and cannot be used well on the network after the video files are imported into Flash.
F4V format
As a smaller and clearer format, F4V has gradually replaced the traditional FLV, and has been compatible with most mainstream players, without complicated ways such as conversion. F4V is a F4V streaming media format supported by H.264, which is introduced by Adobe to meet the high-definition era. The main difference between FLV and FLV is that the FLV format adopts H263 coding, while F4V supports H.264 coded high-definition video with the highest bit rate of 5Mbps. That is to say, F4V and FLV can achieve higher resolution and support higher bit rate under the premise of the same volume, which is what we call clearer and smoother. In addition, the suffix of F4V files downloaded from many mainstream media websites is FLV, which is another feature of F4V format, which is a normal phenomenon. When you watch it, you can obviously feel that this FLV which is actually F4V has obviously higher clarity and fluency.
rmvb format
RMVB is a video file format, where VB refers to Variable Bit Rate. It is much clearer than the previous generation RM format picture, because it reduces the bit rate in static picture.
rm format
RM format is a streaming video file format developed by RealNetworks, which can set different compression ratios according to different rates of network data transmission, thus realizing real-time transmission and playback of video files on the low-rate Internet.
3Gp format
3GP is a video coding format of 3G streaming media, which is mainly developed to match the high transmission speed of 3g network, and it is also the most common video format in mobile phones at present.
3GP is a multimedia standard formulated by the 3rd Generation Partnership Project (3GPP), which enables users to enjoy high-quality multimedia content such as video and audio on their mobile phones. Its core consists of advanced audio coding (AAC), adaptive multi-rate (AMR), MPEG-4 and H.263 video codec, etc. At present, 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 into one stream format. Files in VOB format can be protected by encryption.
VOB is often used for DVD video objects, and it is a key file on DVD, which contains the actual data of DVD video. In fact, VOB file is a basic MPEG-2 data stream, which includes multiplex MPEG-2 video data stream, audio data stream (usually encoded in AC3 format) and subtitle data stream.
VOB file is used to save all audio and video data in MPEG-2 format, which includes not only the movie itself, but also pictures for menus and buttons and sub-picture streams with various subtitles.