Tag: Video Format Image Compression
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1, AVI
The full name in English: Audio Video Interleaved. The AVI format is very familiar to people and is very common in everyday life. The video quality is also very good. However, people often complain that the AVI format takes up too much storage space. AVI was launched by Microsoft in 1992 and is gradually becoming familiar with Windows 3.1. AVI English full name "Audio Video Interleaved" means to interleave audio and video data together so that they can also play simultaneously. The AVI format has become a standard that can be played on different platforms. Of course, if the quality of the video is required to be high, the file will be very large. Another feature of AVI is the support for different codecs (CODECs). Therefore, not all AVI files can be played on the PC at any time. Because of the different codecs used, sometimes you have to download the latest decoder to play AVI files. This is a bit inconvenient.
2, MPEG
Full name in English: Moving Picture Expert Group is an international compression standard for moving images. Image data is very easy to transmit and decode after being compressed by MPEG. MPEG makes the file smaller by removing the redundancy of similar parts of adjacent images. MPEG's compression ratio can reach 50:1, and its compatibility is also very good. At present, MPEG mainly has the following three standards: MPEG-1, MPEG-2 and MPEG-4. MPEG-7 and MPEG-21 are under development.
3, MPEG-4 (MP4)
MPEG-4, often called MP4, is a moving image compression standard widely used on the Internet and storage media. Compared to MPEG-2, MPEG-4 provides better image quality and takes up less space. MP4 can be used for both narrowband and user broadband. The main compression technologies of MPEG-4 are DivX and Xvid. Although the video compressed by DivX or XviD loses a little bit of quality, the file size is much smaller. This technique makes it very convenient to store a movie on a disc, but it can achieve much better image quality than VCD.
4, RM
RM (Real Media) is a video format developed by RealNetworks for streaming media, including RealVideo, RealAudio and RealFlash. In order to be able to transmit and play video over narrowband, the RM uses different remote compression ratios for different bandwidths. RealVideo is used to transmit video data. In addition to being able to play locally as well as other videos, RealVideo can also be placed on RealServer. RealEncoder converts live video to RM format and broadcasts it via RealServer. You can play RM videos while downloading. Unlike other formats of video, you don't have to download the RM file to start playing RM videos.
5, RMVB
As a successor to RM, RMVB was developed based on the RM format. The advantage of RMVB is that it discards the average bit rate and uses the VBR (Variable Bit Rate) technology, which is the dynamic bit rate. In this way, RMVB video achieves higher video quality at acceptable file sizes.
6, DivX
DivX is a new popular video compression technology from DivX that enables people to create and play videos quickly and easily. Because of its outstanding quality, DivX has become one of the most popular MPEG-4 based codecs. DivX integrates MPEG-4 and MP3 technology, compresses DVD video data via MPEG-4, compresses audio data via MP3 or AC3, and its quality is only slightly different from DVD. The other significant one is also compared to DVD, DivX provides the same video quality as DVD, but the file size is only 1/10 of the DVD. It is particularly worth mentioning that DivX is widely used in movie downloads, so it is very popular and is highly regarded by movie lovers.
These are the six video formats we often encounter in our daily lives, each useful. We often use the Video Converter class of software to convert various other formats of video to a format that can be played on a mobile device or on a mobile device. Searching for video converters on Google, you can find a lot, especially abroad.
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