Mpeg Family B88901124 B88901078

What is Mpeg?MPEG( Moving Picture Experts Group )ISO1988100

Mpeg Mpeg-1( 199211 ) Mpeg-2( 199411 ) Mpeg-3( ??????????? ) Mpeg-4 Ver1 ( 199810 ) Mpeg-4 Ver2 ( 199912 )

Mpeg-1

()352X240(NTSC)CBR( Constant Bit Rate )1.5Mbps30 FrameYUV

MPEG-1 YUV

RGB FormatYUV Format Y U(Cr) V(Cb)

Mpeg-1 Block Based Motion Compensation ( ) I(Intra) FrameDCTSize P(Predictive) Frame B(Bidirectional) Frame I B B P DCT Based Compression

Mpeg-1 Motion Compensation12Frame I Frame0.4Sec IBBPBBPBBPBBIBBPBBP IBBPBBPBBP

Mpeg-1 DCTDiscrete Cosine TransformSource Encoding( ) ( 20Hz~20KHz )

Mpeg-1 DCT(II)

Mpeg-1 DCT(III)

Mpeg-1Audio

Mpeg-2(I)

720X480( Mpeg-1 2 )60Frame/s( Mpeg-1 2 )YUVHDTV( High Definition Television )EDTV( Extended Definition Television)

Mpeg-2(II) AudioAAC( Advanced Audio Coding ) 5.1( 5+ )

Mpeg-1 VS. Mpeg-23Mbps80Mbps5~10Mbps0.88Mbps6.5Mbps1.38Mbps720X5761920X1152352X288720X576720X576352X288

Mpeg-1 VS. Mpeg-2

Mpeg-31920X1440HDTVEDTVMpeg-2

Mpeg-1 vs. Mpeg-2

MPEG4Whats different between MPEG4 and other MPEGs?Why do we need MPEG4?

MPEG4~ ex:Wireless Multimedia Application ex: Video-on-Demand ex:

MPEG4 FeatureAVOAVO(Audio Visual Object)content-based coding Natural Audio Object Natural Video Object SNHC (Synthetic- Natural Hybrid Coding) Other (Text,Still Image)

Audio Object

Audio Coding Based on MPEG-2 AACCompatible to MPEG-2 AAC

Video Object

Video Object CodingVLBV (Very low bit-rate Video) CodingGeneric MPEG4 Coding

SNHC (Synthetic- Natural Hybrid Coding)/

Now we have BIFS

Binary Format for Scene: BIFS (:)

Logical structure of a scene

MPEG-4 object-based architecture

ResourceMPEG Home Page http://mpeg.telecomitalialab.com/MPEG-4 Industry Forum http://www.m4if.org/ISMA http://www.isma.tv/