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MPEG & MPEG4 MPEG Video Format MPEG, a short for Moving Picture Experts Group, is the name of familly of standards used for coding audio and video data in a digital compressed format including data transmission across digital networks. MPEG Video files have the .mpg or .dat extension and MPEG Audio files generally have the extension .mp1, .mp2, .mp3. MPEG is cross-platform compatible and can be played on all popular computer systems. Decoding and playing an MPEG file is generally harder on system resources than decoding and playing an AVI file, a factor that makes choosing the correct media type very important. MPEG-1 Media Type files are generally easier on system resources and smaller in file size than other MPEG Media Types. An issue that must be considered when selecting an MPEG Media Type is the CPU speed of the system that will play your videos. For example, even slightly older Pentium systems (such as those with CPU speeds under 350 - 450 MHz) cannot reliably decode and play the MPEG-2 media type. However, MPEG-1 can be decoded and played on just about any Pentium (or generic Pentium) computer. Playing MPEGs on 486 machines is possible, but special software, and at times special hardware (depending on the system setup) is required. MPEG-2 is a newer, more flexible, and more powerful MPEG Media Type. The quality of MPEG-2 can be so good that it's the file format used in DVD and digital satellite television. The most significant downside of MPEG-2 in terms of use on the Internet is system resources: MPEG-2 requires at least a Pentium 350 - 450 (or generic Pentium 350 - 450) CPU for reliable decoding and playback.
MPEG-4 is designed to deliver DVD (MPEG-2) quality video at lower data rates and smaller file sizes. While audio and video are at the core of the MPEG-4 specification, MPEG-4 can also support 3D objects, sprites, text and other media types. MPEG-4 allows the use of different encoding methods, for instance a keyframe can be encoded using ICT or Wavelets resulting in different output qualities. MPG can be either an abbreviation for MPEG or is used as a file extension for MPEG-1 and MPEG-2 video data. DVD (Digital Versatile Disc) is DVD-Video recorded on a DVD-R or DVD-RW disc, which contains superior quality video (MPEG-2) and audio. Typically, a DVD can hold more than one hour of video. DVD Video Parameter Settings DVD Playback Options: VCD (Video Compact Disc) is a CD-ROM disc that contains video and audio. Typically, a VCD can hold about 74 minutes (650MB) of video and stereo-quality audio. The video and audio are stored in MPEG-1 format and follow certain standards (White Book). VCD video quality is roughly the same as VHS video. VCD Video Parameters Settings VCD Playback Options: SVCD (Super Video Compact Disc) is a CD-ROM disc that contains high quality video and audio. Typically, a SVCD can hold about 35~45 minutes (650MB) of video and stereo-quality audio (depends on the data rate used for encoding). The video and audio are stored in MPEG-2 format, much like a DVD. SVCD video has better quality than VHS video. SVCD Video Parameter Settings NOTE: The maximum audio and video combined data rate cannot exceed 2750kbps. SVCD Playback Options: MPEG is a short for Moving Picture Experts Group MPEG-4 is designed to deliver DVD (MPEG-2) quality video at lower data rates and smaller file sizes. While audio and video are at the core of the MPEG-4 specification, MPEG-4 can also support 3D objects, sprites, text and other media types. MPEG-4 allows the use of different encoding methods, for instance a keyframe can be encoded using ICT or Wavelets resulting in different output qualities. H.264 H.264 is the next-generation video compression technology in the MPEG-4 standard, also known as MPEG-4 Part 10. H.264 can match the best possible MPEG-2 quality at up to half the data rate. H.264 also delivers excellent video quality across the entire bandwidth spectrum — from 3G to HD and everything in between (from 40 Kbps to upwards of 10 Mbps). MPEG-2 content at 1920x1080 traditionally runs at 12-20 Mbps, while H.264 can deliver 1920x1080 content at 7-8 Mbps at the same or better quality. H.264 provides DVD quality at about half the data rate of MPEG-2. Because of this efficiency, H.264, an ISO standard, stands to be the likely successor to MPEG-2 in the professional media industry.
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