MPEG/MPG/DAT:

MPEG is the abbreviation of Moving Picture Experts Group. This format includes MPEG- 1, MPEG-2, MPEG-4 and other video formats. MPEG- 1 is considered to be the most widely used, because it is widely used in the production of VCD and the network application of downloading some video clips. Most VCDs are compressed in MPEG- 1 format (the recording software will automatically convert MPEG- 1 into. DAT format). Using the compression algorithm of MPEG- 1, you can save a 65438. MPEG-2 is used in DVD production, and also widely used in some HDTV (High Definition Television Broadcasting) and some demanding video editing processes. A movie with a length of 120 minutes can be compressed to a size of 5-8 GB by using the compression algorithm of MPEG-2 (the picture quality of MPEG-2 is incomparable to that of MPEG- 1).

AVI:

AVI, short for audio and video interleaving. AVI is a video format released by Microsoft, and it is one of the oldest formats in the video field. AVI format has become the most widely used format because of its convenient calling, good image quality and arbitrary compression standard. MOV

Friends who have used MAC should be exposed to QuickTime. QuickTime was originally Apple's image and video processing software for Mac computers. Quick-Time provides two standard image and digital video formats, that is, it can support static *. PIC and *. JPG image format, dynamic *. MOV based on Indeo compression method and *. MPG video format based on MPEG compression method.

ASF:

Advanced stream format. ASF is a file compression format developed by Microsoft to compete with the current Real player, which can watch video programs directly on the Internet. ASF adopts 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 picture quality is worse than that of VCD, but it is better than that of RAM format which is also a video "streaming" format.

WMV:

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: extensible media types, local or network playback, extensible media types, streaming priority, multilingual support, scalability and so on. navigation system

If you find that the original playback software suddenly can't open the AVI file in this format, then you should consider whether you have met n AVI. N AVI is the abbreviation of the new AVI, which is a new video format developed by an underground organization called Shadow Kingdom. It is a modification of Microsoft ASF compression algorithm (not the imagined AVI), and the video format pursues nothing more than compression rate and image quality, so NAVI improves some shortcomings of the original ASF format in order to pursue this goal, so that NAVI can have a higher frame rate. It can be said that NAVI is an improved ASF format without the characteristics of video streaming.

3GP:

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. Simply put, this format is a multimedia standard formulated by 3rd generation partnership project (3GPP), which allows users to enjoy high-quality multimedia content such as video and audio with their mobile phones. Its core consists of advanced audio coding (AAC), adaptive multi-rate coding (AMR), MPEG-4 and H.263 video codec. At present, most mobile phones that support video shooting support video playback in 3GPP format. Real video:

REAL VIDEO (RA, RAM) format is positioned in the application of video streaming from the beginning, and it can also be said that it is the originator of video streaming technology. It can realize uninterrupted video playback under the condition of using 56K modem to dial up the Internet. Of course, compared with MPEG2 and DIVX, its image quality is not satisfactory. After all, it takes a lot of bandwidth to transmit uninterrupted video on the Internet, which is a strong competitor of ASF. MKV

Video files with the suffix MKV often appear on the network. It can integrate multiple different types of audio tracks and subtitle tracks in one file, and the degree of freedom of video coding is also very great, which can be common streaming media videos such as DivX, XviD, 3IVX, and even RealVideo, QuickTime, WMV, etc. In fact, it is a new multimedia packaging format called Matroska. This advanced and open packaging form shows us a very good application prospect.

FLV:

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 is possible to watch video files on the network. Its appearance effectively solves the shortcomings that the exported SWF file is huge after the video file is imported into Flash and cannot be used well on the network.

Attached:

Compare by volume

DVD & gtMPEG4 & gt； AVI & gt； RMVB & gtWMV & gt； FLV & gt； 3GP by image quality ratio

MPEG4 & gt； DVD & gtRMVB & gtAVI & gt； WMV & gt； FLV & gt； 3GP