HDTV Bildcodierung fr DVD 9 Dr Jan H

HDTV Bildcodierung für DVD 9 Dr. Jan H. Giesen Co. C Video Compression Systems Philips Semiconductors Hamburg 13. Juni 2003

Extended DVD Specification • DVD-Forum is working on an extended DVD Specification („DVD V 2. 0“) • Enhanced DVD is based on current DVDROM physical specification: Red Laser • Larger Data Transfer Rate • Main Feature: Support of HDTV Resolution • Proposed: Enh. Audio Coding Schemes: DD+, DTS+ Co. C Video Compression Systems, Dr. Jan H. Giesen, 13. 06. 2003 2

Competing Disc Standards • Blue Ray Disc (“BD”) – 9 c : 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 Co. C Video Compression Systems, Dr. Jan H. Giesen, 13. 06. 2003 3

DVD Video Object Transfer Rates DVD V 2. 0 DVD V 1. 1 Total Mbit/s One Stream VOB 30. 24 - 10. 08 - Video 29. 40 9. 80 Audio 19. 60 18. 43 9. 80 6. 144 Sub. Picture 19. 60 T. B. D. 9. 80 3. 36 Co. C Video Compression Systems, Dr. Jan H. Giesen, 13. 06. 2003 4

HDTV Resolution for 1125/60 System Horiz. Size Vert. Size Frame Rate Aspect Ratio 1920 1080 29. 97 16: 9 1440 1080 29. 97 16: 9 1280 720 59. 94 16: 9 720 480 59. 94 16: 9 704 for Frame 480 59. 94 16: 9 Support Rate 24 fr/s under discussion => Automatic 3: 2 Pull-down Co. C Video Compression Systems, Dr. Jan H. Giesen, 13. 06. 2003 5

HDTV Resolution for 1250/50 System Horiz. Size Vert. Size Frame Rate Aspect Ratio 1920 1080 25 16: 9 1440 1080 25 16: 9 1280 720 50 16: 9 720 576 50 16: 9 704 576 50 16: 9 Co. C Video Compression Systems, Dr. Jan H. Giesen, 13. 06. 2003 6

HD/DVD 9 proposals (7 Mb/s) • MPEG 2 – Mitsubishi • H. 264 ( = AVC, MPEG 4 ISO/IEC 14496 -10, ) – Apple, Pioneer, Sand Video, Toshiba • MPEG 4 ASP – DIVx, i. VAST, JVC • WMV 9 – Micro. Soft - Demo. Grafx • DVD compatible: SD MPEG 2 + HD H. 264 – Philips, Thomson Co. C Video Compression Systems, Dr. Jan H. Giesen, 13. 06. 2003 7

Video Format: MPEG 4 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 4 x 4 block size, 4: 2: 0 – Bi-predictive slices, CABAC, Weighted prediction, Adaptive block-size transforms – Interlace pictures, frame/field adaptive at picture and macroblock level Co. C Video Compression Systems, Dr. Jan H. Giesen, 13. 06. 2003 8

Video Format: MPEG 4 AVC • Restrictions to Level Limits: – Max bitrate: 29. 4 Mbps instread of 50 Mbps – CPB buffer size: 30 Mbits instead of 62. 5 Mbits – Prediction (GOVU) structure. • AVC encapsulation into MPEG 2 PS: – Encapsulation as MPEG video stream – STREAM_ID: 0 x. E 1 (DVD MPEG 2 Video Stream ID: 0 x. E 0) Co. C Video Compression Systems, Dr. Jan H. Giesen, 13. 06. 2003 9

Video Format: WMV 9 • Proposed by Microsoft • WMV 9 encapsulation into MPEG 2 PS: – Extended STREAM_ID: 0 x. FD as defined in ISO/IEC 13818 -1: 2000/FPDAM – Stream ID Extension field in PES Header – Not compatible to existing mechanism to encapsulate “private” streams in DVD VOBs Co. C Video Compression Systems, Dr. Jan H. Giesen, 13. 06. 2003 10

HD/DVD 9 Comparison (7 Mb/s) Very Good for HD movies sales Marginal MP 4 ASP MP 2 H 264 MP 2+H 264 WMV 9 Red: noise prefilter used + postproc Black: no prefilter or postproc Co. C Video Compression Systems, Dr. Jan H. Giesen, 13. 06. 2003 11

Philips internal Viewer Ratings • Quality Rating (720 p): HD MPEG 2 -20 HDon. DVD 9 SD-up : 10 : 9. 8 : 9. 4 : 7 Co. C Video Compression Systems, Dr. Jan H. Giesen, 13. 06. 2003 Original 20 Mbit/s 7 Mbit/s dual layer from 7 Mbit/s SD upscale & pixel + sharpness processing 12

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 Co. C Video Compression Systems, Dr. Jan H. Giesen, 13. 06. 2003 13

Clip Erin Brockovich Reference 7 Mbps 12 Mbps 15 Mbps 20 Mbps 24 Mbps ① Original ③ MPEG-4 ④ MPEG-4 ⑥ MPEG-4 ⑧ MPEG-4 ⑩ MPEG-4 AVC AVC AVC 2/11/0 ② D-VHS emulation N/A Dick Tracy 2/12/0 ② D-VHS emulation N/A 11/0/0 2/11/0 8/4/1 7/6/0 11/2/0 9/4/0 ⑪ MPEG-2 11/0/0 N/A Co. C Video Compression Systems, Dr. Jan H. Giesen, 13. 06. 2003 12/0/0 ⑤ MPEG-2 ⑦ MPEG-2 ⑨ MPEG-2 ⑪ MPEG-2 8/4/1 12/1/0 ③ MPEG-4 ④ MPEG-4 ⑥ MPEG-4 ⑧ MPEG-4 AVC AVC 3/10/0 ② D-VHS emulation 3/9/1 6/7/0 11/0/0 Stuart Little 2 7/6/0 ③ MPEG-4 ④ MPEG-4 ⑥ MPEG-4 ⑧ MPEG-4 ⑩ MPEG-4 AVC AVC AVC 3/10/0 ① Original 5/7/1 ⑤ MPEG-2 ⑦ MPEG-2 ⑨ MPEG-2 11/0/0 ① Original 3/9/1 5/6/2 8/5/0 12/0/0 N/A 12/1/0 ⑤ MPEG-2 ⑦ MPEG-2 ⑨ MPEG-2 ⑩ MPEG-2 5/7/1 8/5/0 13/0/0 12/0/0 14

Conclusions • HD movies on DVD 9 @ 7 -10 Mbs is feasible with good Quality • Also feasible in DVD backwards compatible way using dual layer MP 2/AVC or even MP 2/MP 2. • Picture quality @ DVD 9 bitrates (all codecs) is NOT seen as sufficient by Studios. • Currently only MPEG 2 @ 20 -24 Mbs is seen as sufficient by Studios more interest in Blue Laser Disc Formats than in HD on DVD 9 Co. C Video Compression Systems, Dr. Jan H. Giesen, 13. 06. 2003 15

Contact Philips Semiconductors Dr. Jan Giesen Manager Systemdesign Philips Semiconductor Gmb. H Co. C Video Compression Systems Stresemannallee 101 22529 Hamburg, Germany Tel. : ++ 49 / 40 / 5613 - 3327 Fax. : ++ 49 / 40 / 5613 - 3525 Email : jan. giesen@philips. com Co. C Video Compression Systems, Dr. Jan H. Giesen, 13. 06. 2003 16