In recent years, there has been a tremendous growth of multimedia applications on the internet like streaming video, IP telephony, interactive games, teleconferencing, virtual world, distance learning and so on. It includes internet, intranet, LAN, WAN, ATM, Mobile telephony and others. Depending on the compression scheme and reliability video and audio require large amount of memory. Multimedia systems require storage for large capacity objects such as video, audio, animation and images. High throughput for batch applications, and real-time scheduling, The operating system must provide a fast response time for interactive applications. Real-time recording as well as playback of data are common in most of the multimedia applications which need efficient I/O. In multimedia applications, the input and output should be continuous and fast. Because of restrictions on the conversion from one format to the other, the use of the data in a specific format has been limited as well. Like the DVD video format, AVI files support multiple streaming audio and video. AVI files can contain both audio and video data in a file container that allows synchronous audio-with-video playback. Multimedia data consists of a variety of media formats or file representation including ,JPEG, MPEG, AVI, MID, WAV, DOC, GIF,PNG, etc. To satisfy the requirements for multimedia data, disk schedulers must reduce the latency time to ensure high bandwidth. Disks usually have low transfer rates and high latency rates. These media files requires very high-disk bandwidth rates. To deal with large amount of data, very high processing power is used.įile system must be efficient to meet the requirements of continuous media. Difference between NP hard and NP complete problemįollowing are some major characteristics or features of a Multimedia System:.
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