1. Q G Bit Management John Watkinson David Felland Jim Kutzner

2. Q G San Francisco Public Television Quality Workshop John Watkinson John Watkinson is an international consultant in audio, video and data recording. He is a Fellow of the AES, a member of the British Computer Society and a chartered information systems practitioner. He presents lectures, seminars, conference papers and training courses worldwide. He is the author of the Kraszna-Krausz award winning “MPEG-2” book; The Art of Digital Audio; An Introduction to Digital Video; The Art of Sound Reproduction; An Introduction to Digital Audio; TV Fundamentals and Audio for Television. He is also co-author, with Francis Rumsey, of The Digital Interface Handbook, and contributor to the Loudspeaker and Headphone Handbook, 3rd edition.

3. Q G Bit Management  How compression works and how it doesn't work  Efficient things to do in a compressed environment  Signal formats that work with compression and multi-resolution and those that don't

4. Q G Bit Management  Why less can be more  Why compression is not a production tool  Bringing generation loss back to the digital domain

5. Q G OTA Bit Management  New impacts on your transport stream Better coding efficiency in new HD encoders ○ Claims of 10-15% improvement realized ○ Potential for two 720p HD services in one transport stream – or other services More SD services from which to choose Mobile DTV Fixed and Mobile DTV Data Services

6. Q G Sampling of Current Practice  Surveyed the ETAC 1-3 OTA services Different services plans among all members Focus on HD + national/local SD services HD rates range from 10 - 17 Mb/s

7. Q G HDSD1SD2SD3SD4 PSIPData #13116--- 180k128k #141033-- 150k1M+ 300k ETAC Members’ OTA Pink = Stat Mux Pool

8. Q G DTV Spectrum Usage: ETAC Member #1 ~15 Mbps ~3 Mbps 150 kbps 128 kbps HD program PSIP SD program Data/Ancillary 19.4 Mb/s DTV Transport Stream Stat Mux Pool

9. Q G DTV Spectrum Usage: ETAC Member #2 ~12 Mbps ~2.5 Mbps 250 kbps 1Mbps+128 kbps HD program PSIP SD program Data/Ancillary ~2.5 Mbps SD program 19.4 Mb/s DTV Transport Stream Stat Mux Pool

10. Q G ETAC Member #1: One Mobile Service (Mixed) ~13.5 Mbps 19.4 Mb/s DTV Transport Stream ~2.5 Mbps 150 kbps 128 kbps HD program PSIP SD program Data/Ancillary ~2 Mbps Mobile program Stat Mux Pool

11. Q G ETAC Member #2: One Mobile Service (Mixed) ~11 Mbps ~2 Mbps 250 kbps 1Mbps+128 kbps HD program PSIP SD program Data/Ancillary ~2 Mbps SD program 19.4 Mb/s DTV Transport Stream Stat Mux Pool ~2 Mbps Mobile program

12. Q G DTV Spectrum Usage: ETAC Member #14 ~10 Mbps ~3 Mbps 150 kbps 1Mbps HD program PSIP SD program Data/Ancillary ~3 Mbps SD program 19.4 Mb/s DTV Transport Stream Stat Mux Pool

13. Q G OTA Bit Management  Options for broadcasters Reduced horizontal resolution (1440 vs 1920) Noise reduction of both HD and SD 720p vs. 1080i ☺ X X

14. Q G Video Examples San Francisco Public Television Quality Workshop

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26. Q G Questions? San Francisco Public Television Quality Workshop