HDTV Bildcodierung f

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HDTV Bildcodierung für DVD9

• Dr. Jan H. Giesen
• CoC Video Compression Systems
• Philips Semiconductors Hamburg
• 13. Juni 2003

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Extended DVD Specification

• DVD-Forum is working on an extended DVD
  Specification (DVD V2.0)
• Enhanced DVD is based on current DVD-ROM physical
  specification Red Laser
• Larger Data Transfer Rate
• Main Feature Support of HDTV Resolution
• Proposed Enh. Audio Coding SchemesDD, DTS

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Competing Disc Standards

• Blue Ray Disc (BD)
• 9c Hitachi, LG, Matsushita, Pioneer, Philips,
  Samsung, Sharp, Sony, Thompson
• 405 nm blue-violett Laser, N.A. 0.85, Track
  pitch 0.32 um, 0.1 mm optical layer
• about 25 GB, 36 Mbit/s transfer rate
• HDTV Streamer application format defined
• Advanced Optical Disc
• Toshiba

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DVD Video Object Transfer Rates
DVD V2.0 DVD V2.0 DVD V1.1 DVD V1.1
Total Mbit/s One Stream Total Mbit/s One Stream
VOB 30.24 - 10.08 -
Video 29.40 29.40 9.80 9.80
Audio 19.60 18.43 9.80 6.144
Sub-Picture 19.60 T.B.D. 9.80 3.36
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HDTV Resolution for 1125/60 System
Horiz. Size Vert. Size Frame Rate Aspect Ratio
1920 1080 29.97 169
1440 1080 29.97 169
1280 720 59.94 169
720 480 59.94 169
704 480 59.94 169
Support for Frame Rate 24 fr/s under
discussion gt Automatic 32 Pull-down
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HDTV Resolution for 1250/50 System
Horiz. Size Vert. Size Frame Rate Aspect Ratio
1920 1080 25 169
1440 1080 25 169
1280 720 50 169
720 576 50 169
704 576 50 169
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HD/DVD9 proposals (7Mb/s)

• MPEG2
• Mitsubishi
• H.264 ( AVC, MPEG4 ISO/IEC 14496 -10,)
• Apple, Pioneer, Sand Video, Toshiba
• MPEG4 ASP
• DIVx, iVAST, JVC
• WMV9
• MicroSoft - DemoGrafx
• DVD compatible SD MPEG2 HD H.264
• Philips, Thomson

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Video Format MPEG4 AVC

• Proposed by Toshiba
• Main Profile, Level 4.I
• I P picture types, In-loop deblocking,1/4
  sample motion compensation, VLC-based entropy
  coding, Tree-structured motion segmentation down
  to 4x4 block size, 420
• Bi-predictive slices, CABAC, Weighted prediction,
  Adaptive block-size transforms
• Interlace pictures, frame/field adaptive at
  picture and macroblock level

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Video Format MPEG4 AVC

• Restrictions to Level Limits
• Max bitrate 29.4Mbps instread of 50Mbps
• CPB buffer size 30Mbits instead of 62.5Mbits
• Prediction (GOVU) structure.
• AVC encapsulation into MPEG2 PS
• Encapsulation as MPEG video stream
• STREAM_ID 0xE1(DVD MPEG2 Video Stream ID 0xE0)

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Video Format WMV9

• Proposed by Microsoft
• WMV9 encapsulation into MPEG2 PS
• Extended STREAM_ID 0xFD as defined in ISO/IEC
  13818-12000/FPDAM
• Stream ID Extension field in PES Header
• Not compatible to existing mechanism to
  encapsulate private streams in DVD VOBs

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HD/DVD9 Comparison (7Mb/s)
Very Good
Good for HD movies sales
Marginal
MP2
WMV9
H264
MP4ASP
MP2H264
MP2
Red noise prefilter used postproc
Black no prefilter or postproc
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Philips internal Viewer Ratings

• Quality Rating (720p)
• HD 10 Original
• MPEG2-20 9.8 20 Mbit/s
• HDonDVD9 9.4 7 Mbit/s dual layer
• SD-up 7 from 7 Mbit/s SD upscale pixel
  sharpness processing

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Blue Ray Viewing Session

• Februar 2003
• Non-Blind Test
• OK means the picture quality is good enough
  for HD package media
• NG means the picture quality is not sufficient
  enough for HD package media
• Rating structure OK / NG / no opinion

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7Mbps
12Mbps
15Mbps
20Mbps
24Mbps
Clip
Reference
Erin Brockovich
? Original
? MPEG-4 AVC
? MPEG-4 AVC
? MPEG-4 AVC
? MPEG-4 AVC
? MPEG-4 AVC
2/11/0
3/9/1
5/7/1
7/6/0
9/4/0
? MPEG-2 8/4/1
? D-VHS emulation
N/A
? MPEG-2
? MPEG-2
? MPEG-2
2/12/0
2/11/0
11/0/0
11/0/0
Dick Tracy
? Original
? MPEG-4 AVC
? MPEG-4 AVC
? MPEG-4 AVC
? MPEG-4 AVC
? MPEG-4 AVC
3/9/1
7/6/0
11/2/0
12/0/0
3/10/0
? D-VHS emulation
? MPEG-2
? MPEG-2
? MPEG-2
? MPEG-2
N/A
6/7/0
8/4/1
12/1/0
12/0/0
11/0/0
Stuart Little 2
? MPEG-4 AVC
? MPEG-4 AVC
? MPEG-4 AVC
? MPEG-4 AVC
N/A
? Original
5/6/2
8/5/0
12/1/0
3/10/0
N/A
? MPEG-2
? MPEG-2
? MPEG-2
? MPEG-2
? D-VHS emulation
5/7/1
8/5/0
13/0/0
12/0/0
11/0/0
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Conclusions

• HD movies on DVD9 _at_ 7-10Mbs is feasible with good
  Quality
• Also feasible in DVD backwards compatible way
  using dual layer MP2/AVC or even MP2/MP2.
• Picture quality _at_ DVD9 bitrates (all codecs) is
  NOT seen as sufficient by Studios.
• Currently only MPEG2 _at_ 20-24Mbs is seen as
  sufficient by Studios ? more interest in Blue
  Laser Disc Formats than in HD on DVD9

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Contact
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(No Transcript)