1. Standards Subgroup Of the Digital Television Working Group Standards Subgroup Of the Digital Television Working Group UPDATE Presenter John Knox, Manager Video Applications Group Langley Research Center John Knox, Manager Video Applications Group Langley Research Center

2. DTV WORKING GROUP Standards Sub-Group DTV WORKING GROUP Standards Sub-Group 5.1.1 High Definition Aspect Ratio: 16X9 Frame Rate: Film Transfer - 24 FPS Production - 30 FPS Analysis - 60 FPS Scanning: TBD Following Testing Resolution: TBD Following Testing Aspect Ratio: 16X9 Frame Rate: Film Transfer - 24 FPS Production - 30 FPS Analysis - 60 FPS Scanning: TBD Following Testing Resolution: TBD Following Testing Picture Formats

3. Update DTV WORKING GROUP Standards Sub-Group DTV WORKING GROUP Standards Sub-Group 5.1.1 High Definition Aspect Ratio: 16X9 Frame Rate: Film Transfer - 24 FPS Production - 30 FPS Analysis - 60 FPS Scanning: TBD Following Testing Resolution: TBD Following Testing Aspect Ratio: 16X9 Frame Rate: Film Transfer - 24 FPS Production - 30 FPS Analysis - 60 FPS Scanning: TBD Following Testing Resolution: TBD Following Testing

4. HD Test Configuration DTV WORKING GROUP Standards Sub-Group DTV WORKING GROUP Standards Sub-Group Used portable 720p and 1080i cameras Used portable 720p and 1080i cameras HD-D5 VTR for recording both HD-D5 VTR for recording both Evaluation using same monitor for both HD signals Evaluation using same monitor for both HD signals Multiple test subjects Multiple test subjects Resolution Chart Line, Text and Back-Focus charts, static & rotating $20 bill Soccer Ball Used portable 720p and 1080i cameras Used portable 720p and 1080i cameras HD-D5 VTR for recording both HD-D5 VTR for recording both Evaluation using same monitor for both HD signals Evaluation using same monitor for both HD signals Multiple test subjects Multiple test subjects Resolution Chart Line, Text and Back-Focus charts, static & rotating $20 bill Soccer Ball Test Methodology

5. DTV WORKING GROUP Standards Sub-Group DTV WORKING GROUP Standards Sub-Group HD Test Configuration Methodology

6. Test Results DTV WORKING GROUP Standards Sub-Group DTV WORKING GROUP Standards Sub-Group Interlace Freeze Frame Note: Blurred Lines Note: Blurred Lines

7. DTV WORKING GROUP Standards Sub-Group DTV WORKING GROUP Standards Sub-Group Progressive Freeze Frame Test Results Note: Clear Line Definition Note: Clear Line Definition

8. DTV WORKING GROUP Standards Sub-Group DTV WORKING GROUP Standards Sub-Group The World’s Most Cost Effective HD Test Chart Test Methodology Area of Interest

9. DTV WORKING GROUP Standards Sub-Group DTV WORKING GROUP Standards Sub-Group Progressive Freeze Frame Note: Clear Line Definition Note: Clear Line Definition Test Results

10. DTV WORKING GROUP Standards Sub-Group DTV WORKING GROUP Standards Sub-Group Interlace Freeze Frame Test Results Note: Moire Note: Moire

11. DTV WORKING GROUP Standards Sub-Group DTV WORKING GROUP Standards Sub-Group Interlace Freeze Field Note: Smear Swirl Direction Note: Smear Swirl Direction Test Results

12. DTV WORKING GROUP Standards Sub-Group DTV WORKING GROUP Standards Sub-GroupProgressiveProgressive Test Results InterlaceInterlace Correct Incorrect

13. DTV WORKING GROUP Standards Sub-Group DTV WORKING GROUP Standards Sub-Group Interlace Scan showed artifacts, distortion Interlace Scan showed artifacts, distortion Interlace Freeze Frames have interfield jitter on moving objects Interlace Freeze Fields are inaccurate (Interlace line pairing and effective line doubling of output caused distortions) Progressive Scan video showed NO artifacts Progressive Scan video showed NO artifacts Interlace Scan showed artifacts, distortion Interlace Scan showed artifacts, distortion Interlace Freeze Frames have interfield jitter on moving objects Interlace Freeze Fields are inaccurate (Interlace line pairing and effective line doubling of output caused distortions) Progressive Scan video showed NO artifacts Progressive Scan video showed NO artifacts Test Results Conclusion

14. DTV WORKING GROUP Standards Sub-Group DTV WORKING GROUP Standards Sub-Group Interlace cameras discharge the entire CCD every field. Adjacent line pairs are combined on the output. This effectively reduces vertical resolution by 30% on either frame or field basis Interlace cameras discharge the entire CCD every field. Adjacent line pairs are combined on the output. This effectively reduces vertical resolution by 30% on either frame or field basis A 1080i frame has 756 lines of vertical resolution without taking interlace artifacts into account A1080i field has 378 lines of vertical resolution Effective resolution of Sony HDCAM is 1440 X 756 with interlace artifacts evident in freeze frames and distortion in freeze fields Effective resolution of Sony HDCAM is 1440 X 756 with interlace artifacts evident in freeze frames and distortion in freeze fields Interlace scan video originated for production use (Public Affairs, etc.) may not be suitable for analysis Interlace cameras discharge the entire CCD every field. Adjacent line pairs are combined on the output. This effectively reduces vertical resolution by 30% on either frame or field basis Interlace cameras discharge the entire CCD every field. Adjacent line pairs are combined on the output. This effectively reduces vertical resolution by 30% on either frame or field basis A 1080i frame has 756 lines of vertical resolution without taking interlace artifacts into account A1080i field has 378 lines of vertical resolution Effective resolution of Sony HDCAM is 1440 X 756 with interlace artifacts evident in freeze frames and distortion in freeze fields Effective resolution of Sony HDCAM is 1440 X 756 with interlace artifacts evident in freeze frames and distortion in freeze fields Interlace scan video originated for production use (Public Affairs, etc.) may not be suitable for analysis Conclusion Test Results

15. DTV WORKING GROUP Standards Sub-Group DTV WORKING GROUP Standards Sub-Group Progressive cameras by definition have no fields and thus exhibit no interfield jitter Progressive cameras by definition have no fields and thus exhibit no interfield jitter Progressive Progressive had better performance at normal play speed Progressive Progressive had better performance in still frame Progressive Progressive converted to other video formats well, without artifacts Progressive video generated for analysis purposes can be easily and transparently converted to interlace, if necessary, for Public Affairs use Progressive cameras by definition have no fields and thus exhibit no interfield jitter Progressive cameras by definition have no fields and thus exhibit no interfield jitter Progressive Progressive had better performance at normal play speed Progressive Progressive had better performance in still frame Progressive Progressive converted to other video formats well, without artifacts Progressive video generated for analysis purposes can be easily and transparently converted to interlace, if necessary, for Public Affairs use Conclusion Test Results

16. DTV WORKING GROUP Standards Sub-Group DTV WORKING GROUP Standards Sub-Group 720p transcoded to 1080i - 720p transcoded to 1080i - No visible artifacts are introduced in the transcoding A progressive scan of the $20 bill shot transcoded to 1080i showed fewer artifacts than the 1080i original 1080i transcoded to 720p - 1080i transcoded to 720p - Interlace artifacts were still visible 720p transcoded to 1080i - 720p transcoded to 1080i - No visible artifacts are introduced in the transcoding A progressive scan of the $20 bill shot transcoded to 1080i showed fewer artifacts than the 1080i original 1080i transcoded to 720p - 1080i transcoded to 720p - Interlace artifacts were still visible Conclusion Test Results

17. 5.1.1 HD Standards Summary DTV WORKING GROUP Standards Sub-Group DTV WORKING GROUP Standards Sub-Group Scanning - Progressive Resolution - 1280 X 720 Scanning - Progressive Resolution - 1280 X 720 RECOMMENDATIONS Conclusion        

18. 5.1.2 Standard Definition Summary DTV WORKING GROUP Standards Sub-Group DTV WORKING GROUP Standards Sub-Group SMPTE 259M (CCIR 601), 720 X 480 Scanning - Interlace or Progressive Aspect ratio - 4:3 or 16:9 (Should be switchable) SMPTE 259M (CCIR 601), 720 X 480 Scanning - Interlace or Progressive Aspect ratio - 4:3 or 16:9 (Should be switchable) RECOMMENDATIONS Conclusion            

19. 5.2.1 Audio Summary DTV WORKING GROUP Standards Sub-Group DTV WORKING GROUP Standards Sub-Group Acquisition - AES-3 Uncompressed Post Production Recording/Editing - TBD Distribution Contribution - AES-3 Uncompressed Viewing - AC-3 Acquisition - AES-3 Uncompressed Post Production Recording/Editing - TBD Distribution Contribution - AES-3 Uncompressed Viewing - AC-3 RECOMMENDATIONS Conclusion

20. Thank You Standards Subgroup for the Digital Television Working Group Standards Subgroup for the Digital Television Working Group