This format is a big one in the video camp, and it is also the most common video format we usually see. There are many derived formats, including video files with suffixes of mpg, mpe, mpa, m 15, m 1v, mp2, etc. , all from this family. MPEG format includes three parts: MPEG video, MPEG audio and MPEG system (video and audio synchronization). MP3(MPEG-3) audio file is a typical application of MPEG audio. Video includes MPEG- 1, MPEG-2 and MPEG-4.
MPEG- 1 is widely used to make VCDs and download some video clips, the most of which is VCD-almost all VCDs are files in Geng *. Mpge- 1 compressed dat format). The compression algorithm of MPEG- 1 can compress a movie (original video file) with the length of 120 minutes to the size of 1.2 GB.
MPEG-2 is suitable for DVD production (the file format is *. Vob format), as well as some HDTV high-definition TV broadcasts) and some demanding video editing processing. Using the compression algorithm of MPEG-2, the size of a 120-minute movie (original video file) is about 4GB to 8GB. Of course, its picture quality index is incomparable with MPEG- 1.
MPEG-4 is a new compression algorithm. The ASF format file (which will be introduced next) using this algorithm can make a movie (original video file) with a length of 120 minutes "slim down" to about 300MB. Because it is small and easy to spread, it has become one of the main ways to watch online. This algorithm is said to be a coding technology prohibited from export in the United States. In addition, the source file can be compressed to about 600MB by using DivX format, but its image quality is much higher than ASF. Because of its high efficiency, there are rumors that the United States prohibits the export of this technology.
By the way, I also want to introduce the DivX format. The most incisive word to summarize DivX format is: DVD killer. DivX video coding technology can be said to be born for DVD and developed to break the shackles of ASF. As mentioned above, it uses MPEG-4 algorithm, so only two VCDs are needed to compress a DVD! This not only means that you can get almost the same video quality without buying DVD-ROM, but also has low requirements for the machine to play this code: as long as the CPU is above 300 MHz, 64MB of memory and 4MB of graphics card (I believe most machines meet the requirements now), it can play smoothly.
In addition, it is worth mentioning that MPEG- 1 and MPEG-2 have their own special resolution standards when they are made into VCD and DVD respectively. The resolution of MPEG- 1 compressed image is 352×240 when using NTSC format, 352×288 when using PAL format, and DVD is used. If you plan to make CDs for DVD/VCD players, you need to pay special attention to the formats used by various video recorders when making video files.
Question 2: What are the common video formats? 1, AVI, English abbreviation 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 optional compression standard.
2.MOV friends who have used MAC should have some contact with 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.
3, 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.
4.WMV is a real-time multimedia transmission technology standard 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.
5. Navid
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.
6.3 gallons
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.
7. 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.
8、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, and this advanced and open packaging format has been given to me ... & gt
Question 3: What playback formats are there? avi
rvmb
space
mp3
mp4
Feline leukemia virus
3gp
Wait a minute.
Question 4: What are the common video formats? MPEG/。 MPG/。 DAT MPEG is also the abbreviation of moving picture expert 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. Using the compression algorithm of MPEG-2 to compress a movie with the length of 120 minutes can be compressed to the size of 5-8 GB (the picture quality of MPEG-2 is incomparable to that of MPEG- 1). *.MP4 MP4, full name of MPEG-4 Part 14, is a multimedia computer file format using MPEG-4, with an extension of .mp4, which mainly stores digital audio and digital video. In addition, MP4 can be understood as MP4 player, which is a multifunctional player integrating audio, video, picture browsing, e-books and radio. MP4 is bigger than MP3. The exact concept of MP4 is a long story, because the brand, market, product specifications and configuration standards of MP4 can all be described in one word-"chaos". I don't know if it's hype or fashion. Now, in the eyes of merchants, all players that can access video are called MP4, which is simple and intuitive. In fact, MP4 player is a device that can play MPEG-4 files. It can be called PVP (Personal Video Player) or PMP (Portable Media Player). At present, there is no specific definition of the function of MP4 player. Although many manufacturers define it as a multimedia audio-visual player, it supports music playing, browsing pictures and even some products can surf the Internet besides listening to movies. However, in order to emphasize the characteristics of portability, the MP4 players we discuss here will all be portable and play videos. They can transfer files through USB or 1394 port, download video files to devices for easy playing, and should have their own LCD screen to meet the needs of playing videos at any time. *.AVI AVI, English abbreviation for audio and video interleaving. AVI is a video format released by Microsoft, which has existed in the video field for several years. AVI format is convenient to call, with good image quality, but the disadvantage is that the file is too large. RA/RM/RAM *。 RM is one of the audio/video compression standards formulated by real networks. What Real Player can do is to use Internet resources to broadcast these audio/video that meet the technical specifications of Real Media live broadcast. The Real Media specification mainly includes three types of files: RealAudio, Real Video and RealFlash (a new generation of high compression ratio animation format jointly launched by RealNetworks and Macromedia). 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. You can realize uninterrupted video playback when using a 56K modem to dial up the Internet, but the picture quality is worse than that of VCD. If you have seen those RM-compressed DVDs, you can clearly compare them. *.RMvb RMvb is a multimedia video file format, and VB in RMvb refers to variable bit rate. & gt
Question 5: What is the suffix of the audio-visual format file? Rm avi wav dat and so on, as well as high-definition DVD format and so on. I suggest that if you want to download high-definition audio-visual format files, you can use the electric donkey, which has good resources and of course takes up a lot of hard disk capacity. ....
Question 6: What video formats or formats can be played on any player? What is the purpose of asking this question, or what do you mean by any player, mobile phone or computer? Generally, Android or Apple phones usually natively support mp4, which is the most common format at present. As for all the players you mentioned, there is basically no such format (the system is divided into other systems such as windows and mac osx and other linux/unix systems, and the same windows is also divided into different versions, which is very different).
Question 7: What are the video file formats? 3gp，3g2，avi，dv，dif，mov，qt，swf，mp2，mp3，ogg，aac，m4a，nut，ac3，h26 1，h264，m4v，yuv，mp4，rm，ra，ram，rmvb，wma，wmv，asf，mpg，mpeg，mpa，vob，dat，ape，cue，mkv，wav，aiff，au，cda，avs，psp，*** k，NSK。
Question 8: What are the *? MPEG/。 MPG/。 DAT in all video formats?
MPEG is also 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. Using the compression algorithm of MPEG-2 to compress a movie with the length of 120 minutes can be compressed to the size of 5-8 GB (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, which has existed in the video field for several years. AVI format is convenient to call and the image quality is good, but the disadvantage is that the file is too large.
*. Random Access Memory/Random Access Memory
? *.RM, one of the audio and video compression standards formulated by Real Networks, what Real Player can do is to use Internet resources to broadcast these audio and video that meet the technical specifications of Real Media live. The Real Media specification mainly includes three types of files: RealAudio, Real Video and RealFlash (a new generation of high compression ratio animation format jointly launched by RealNetworks and Macromedia). 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. You can realize uninterrupted video playback when using a 56K modem to dial up the Internet, but the picture quality is worse than that of VCD. If you have seen those RM-compressed DVDs, you can clearly compare them.
*.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.
*. Wild mumps virus
? 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.
*. avi (north of avi)
? If you find that the original playback software suddenly can't open the AVI file in this format, then you ... >>
Question 9: What PPTV are available for video players that support all formats?
Question 10: What movie formats are there for you to answer? The movie formats are RM, RMVB, WMV, AVI, 3GP, AMR, MP4, FLV, MPEG, VOD, DVD and DAT.