MPEG-1 MPEG-2.

Átírás

1 1 / 52

2 1 2 / 52

3 1 2 MPEG-1 MPEG-1 H.261 MPEG-1 2 / 52

4 1 2 MPEG-1 MPEG-1 H.261 MPEG-1 3 SNR 2 / 52

5 1 2 MPEG-1 MPEG-1 H.261 MPEG-1 3 SNR 4 2 / 52

6 MPEG Moving Pictures Experts Group MPEG 3 / 52

7 MPEG-1 MPEG-1 MPEG-1 / / ISO/IEC Mbits/s CD VCD 1.5 Mbps 1.2 Mbps VHS 256 kbps CD MPEG-1 SIF Source Input Format NTSC 30 fps PAL 25 fps 1 International Organization for Standardization/International Electrotechnical Commission 4 / 52

8 MPEG-1 MPEG-1 MPEG-1 MPEG-1 YCbCr4:2:0 MPEG-1 ISO/IEC Systems Video Audio Conformance Software MPEG-1 5 / 52

9 MPEG-1 MPEG-1 MEP I P DCT 6 / 52

10 MPEG-1 MPEG-1 MPEG B 7 / 52

11 MPEG-1 MPEG-1 I P B MV MV MV 8 / 52

12 MPEG-1 MPEG-1 B B 9 / 52

13 MPEG-1 H.261 H.261 MPEG-1 B- H.261 CIF QCIF MPEG-1 SIF NTSC 352x240 PAL 352x288 Constrained Parameter Set, CPS 10 / 52

14 MPEG-1 H.261 H.261 Slice Slice H.261 GOB MPEG-1 SliceSlices Slice Slice 11 / 52

15 MPEG-1 H.261 H.261 H.261 AC MPEG-1 Scale [1, 31] 12 / 52

16 MPEG-1 H.261 H / 52

17 MPEG-1 H.261 H.261 MPEG MV H MPEG-1 MV [-512, 511.5] 1 2 MPEG-1 GOP GOPI 14 / 52

18 MPEG-1 H.261 I P I B B 15 / 52

19 MPEG-1 MPEG-1 16 / 52

20 MPEG-1 MPEG-1 Sequence Layer Sequence Header GOP GOP Layer I GOPtime code / 52

21 MPEG-1 MPEG-1 1 Picture Layer 4 I P B D D DC Slice Layer Slice Header 18 / 52

22 MPEG-1 MPEG-1 2 Macroblock Layer 6 8x8 4 Y 1 Cb 1 Cr Block Layer DC DPCM AC VLC DC AC VLC 19 / 52

23 MPEG 4Mbps ISO/IEC DVD 20 / 52

24 HDTV Profile Simple Main SNR Scalable Spatially Scalable High 4:2:2 Multiview 4 Level 4 High High 1440 Main Low 21 / 52

25 1 22 / 52

26 2 Main Low SIFMPEG-1 Main CCIR601 High 1440HDTV High HDTV HDTV 23 / 52

27 HDTV Interlaced Video Frame Top Field Bottom Field Frame Picture Field Picture 24 / 52

28 MC Frame Prediction Field Prediction 5MC ) 1 Frame Prediction for Frame Pictures 2 Field Prediction for Field Pictures 3 Field Prediction for Frame Pictures 4 16x8 16x8 MC for Field Pictures 5 PDual-Prime for P Pictures 25 / 52

29 MPEG-1 P B MC 26 / 52

30 16x16 P Top Field I/P Top Field Bottom Field Bottom Field Top Field I/P Bottom Field B 27 / 52

31 Top Field Bottom Field 1 MB 2 16x8 P 2 16x8 I/P Top Field Bottom Field B P MB 2 MV B 2 16x8 MB 2 4 MV 28 / 52

32 16x8 MC 16x1616x8 8 8 P 2 MV B 2 4 MV 29 / 52

33 P 30 / 52

34 P 1 Transmitted MV TMV Top Field Bottom Field 2 TMV Top Field Bottom Field TMV Computed MV, CmMV 3 Differential MV, DMV CmMV Corrected MV, CrMV 4 TMV CrMV 31 / 52

35 DCT Alternate Scan DCT Field DCT DCT 8x8 32 / 52

36 33 / 52

37 DCT DCT Y MB 8 Top Field 8 Bottom Field DCT 8x8 34 / 52

38 Scalability Scalable Coding Layered Coding Base Layer Enhancement Layer VBR 35 / 52

39 SNR SNR 36 / 52

40 SNR SNR SNR SNR Signal-to-Noise Ratio, SNR SNR Bits base Bits enhance DCT DCT IQ DCT Bits enhance 37 / 52

41 SNR SNR 38 / 52

42 SNR SNR 39 / 52

43 40 / 52

44 MC 1 Interlayer MC Prediction B- 2 Combined MC Prediction and Interlayer MC Prediction B- 41 / 52

45 42 / 52

46 43 / 52

47 44 / 52

48 45 / 52

49 Partition 0 Partition 1 Partition 0 DCT Partition 1 DCT Partition 1Partition 0 46 / 52

50 MPEG-1 Program Stream Transport Stream 1 MPEG-1 MPEG Bytes 47 / 52

51 MPEG-1 1 4:2:2 4:4:4 48 / 52

52 MPEG-1 2 step size Q[i, j] scale Q scale 1 MPEG-1 scale Z, [1, 31] 2 i [1, 31]scale i 49 / 52

53 MPEG-1 3 Slice Slice Slice Slice DVD HDTV 50 / 52

54 1 MPEG-1 H / 52

55 ! 52 / 52