Types of video compression7/28/2023 Many AVI compressors, tailored for different needs, have been designed. Because the process of making an AVI file lets you choose among up to dozens of different codecs, you face the challenge of selecting the right codec. This makes creating a WMV file very simple. You just have to select an appropriate profile and the profile will automatically select a codec. The Windows Media format (WMV) also uses codecs, but fewer of them, and the selection process is hidden from the user. With AVI, you can just switch to a better codec. This makes it difficult to adopt MPEG to use newer and better compression technologies. With MPEG, you do not have the option of substituting your own codec. Unlike AVI, which is more of a general specification, MPEG 2 is a compression technique itself. Other file formats like MPEG 2 or WMV are not as flexible. For instance, there are several codecs that implement MPEG 4 video compression.) AVI’s popularity and extensibility depend on the fact that you can freely select different video and audio codecs. There can be several codecs-programs-that can compress using the same technique. (Generally, a codec is a program that compresses or decompresses audio or video. AVI codecs (COmpressor – DECompressor) greatly reduce file sizes while maintaining optimum quality. Lossy compression techniques are known to produce high compression. In audio compression, psychoacoustic techniques are used to remove non-audible components of the audio signal. Properly compressed video and audio files are nearly indistinguishable from the original to the human eye or ear. Most video and audio compressors compress data in ways that are lossy, but produce very high compression levels. Lossy compression reduces file size by permanently eliminating redundant information, so that only a part of the original data is retained and reproduced. Well known lossless compression methods include Zip and RAR. For most files, lossless methods reduce the file size by only 50-60%. are compressed using lossless techniques, since a change in even one bit of data can make them useless or produce incorrect results. Computer programs, software applications, databases etc. When the compressed file is decompressed, the result is identical to the data before compression. In the lossless type of compression, no data is lost during the compression process. Compression can be broadly classified into two types. Compressed files take up less space, saving you money on additional storage and bandwidth charges.ĭigital Media Converter Pro can convert your video files to compressed avi format. Uncompressed data, especially video and audio content, simply takes up a lot of space. ![]() While text files and documents take little space to store and little bandwidth to transmit image, audio and video files are a different ball game altogether. ![]() ![]() Understanding Video Compression in AVI FormatĮven with the advent of powerful processors, bigger hard-drives and previously unimaginable Internet speeds, the need for data compression can't be overstated.
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