MPEG-4compressionNatural media: advanced functionalities160kbpsArbitrarybitratevideocoding100kbps
Natural media: advanced functionalities Arbitrary bitrate video coding 160 kbps 100 kbps MPEG-4 compression
MPEG-4SpecificationsMPEG-4 standard componentsPart1Systems(2001)Part11Scene Description andApplicationEnginePart2Visual (2001)Part12ISOBaseMediaFilePart3Audio(2001)FormatPart4Conformance(2002)Part13IPMPExtensionsPart5ReferenceSoftwarePart14MP4FileFormat(2002)Part15Advanced VideoPart6DMIF-DeliveryCoding File FormatMultimedia Integration Framework(2000)Part16AnimationFrameworkeXtension（AFX)Part7OptimizedSoftware(2002)Part17Streaming TextFormatPart8Part18MPEG40nIP(2002)Font CompressionandStreamingPart9ReferenceHardware(2003)Part19SynthesizedStreamsPart10Part20LASERAdvanced Video Coding一(AVC)jointwithITU-T(2003)
MPEG-4 standard components MPEG-4 Specifications – Part 1 Systems (2001) – Part 2 Visual (2001) – Part 3 Audio (2001) – Part 4 Conformance (2002) – Part 5 Reference Software (2002) – Part 6 DMIF - Delivery Multimedia Integration Framework (2000) – Part 7 Optimized Software (2002) – Part 8 MPEG 4 on IP (2002) – Part 9 Reference Hardware (2003) – Part 10 Advanced Video Coding (AVC) joint with ITU-T (2003) – Part 11 Scene Description and Application Engine – Part 12 ISO Base Media File Format – Part 13 IPMP Extensions – Part 14 MP4 File Format – Part 15 Advanced Video Coding File Format – Part 16 Animation Framework eXtension (AFX) – Part 17 Streaming Text Format – Part 18 Font Compression and Streaming – Part 19 Synthesized Streams – Part 20 LASER
MPEG-4SpecificationsModule organizationISO/IEC14496-10:2004ISO/IEC14496-2:2004Coding ofvisual objectsCoding of visual objectsPart10,AdvancedVideoPart2,VisualCoding
Module organization MPEG-4 Specifications ISO/IEC 14496-10:2004 Coding of visual objects, Part 10, Advanced Video Coding ISO/IEC 14496-2:2004 Coding of visual objects, Part 2, Visual
Video CompressionVideo compression:a must?!MinutesDurationFrequencyImageMovie:3x720x576x25x60x90:167961600000*bytesPixel34DVD:4.5Gb222CD:650-700Mb118ADSL:0.25Mb/s* 156 Gb (=29,66 Mb/s)
Video compression: a must ?! Video Compression * 156 Gb (=29,66 Mb/s) Movie: DVD : 4.5 Gb 34 CD : 650-700 Mb 222 ADSL : 0.25 Mb/s 118 Pixel Image Frequency Minutes Duration
Video CompressionCompression...how does it work ?!Spatial redundancyTemporalredundancy
Compression.how does it work ?! Video Compression Spatial redundancy Temporal redundancy