"4K/ UHD Advanced"
4 likes2,138 views
This document discusses 12 essential aspects of 4K/UHD video including: 1) Resolution - True resolution is based on number of photosites not pixel count. The next generation 65mm Panavision camera has 24.9 million photosites. 2) Compression formats - Common compression formats for 4K include H.264, XAVC, ProRes, MPEG-4, and wavelet-based formats like JPEG 2000. 3) Connectivity - Interfaces that support high data rates for 4K like 6G-SDI, 12G-SDI, HDMI 2.0, DisplayPort 1.3, and 25G-SDI.
"4K/ UHD Advanced"
- 1. Pres1401 Advanced 4K UHD François ABBE, Cherif BEN ZID, Asma JENHANI mesclado 17 May 2015 Eurecom
- 2. Pres1401 2 4K/UHD – The 12 essentials
- 4. Pres1401 True Resolution Rating a camera by counting horizontal photosites is wrong but common (eg; Red 5K v Panavision Genesis 5.7K or 2K) • Sony F65 has 8192 photosites horizontally • Next generation 65mm Panavision Camera The final image size is 48mm x 20.25mm. The number of photosites is 7680 (1920 x 4) by 3240 (1080 x 3), for a total of 24,883,200 photosites, with a photosite size of 6.25μ and output sample grid of 3840 x 2160. 4
- 5. Pres1401 Compression formats (1) – DCT-based Format Mode Max Sampling Max Resolution Max Frame Rate Max Birate H.264 @5.2 Intra / Long GOP 4:2:0 10-bits 4K 60p 720 Mbps XAVC XAVC Long GOP 4:2:2 10-bits UHD-1 60p 150 Mbps XAVC Intra 4:2:2 10-bits 4K 960 Mbps XAVC S 4:2:0 8-bits (4K) UHD-1 150 Mbps AVC-Ultra Intra 4:4:4 12-bits 4K 24p NM 4:2:2 10-bits 4K UHD-1 60p NM ProRes 4444 4:4:4:4 12-bits math. lossless 5K 60p 3535 Mbps 422 (HQ) 4:2:2 10-bits visually lossless 2357 Mbps MPEG-4 SStP 5 4:4:4 12-bits 4K 30p 1800 Mbps 6 60p 3600 Mbps 7
- 6. Pres1401 Compression formats (2) – wavelet-based Implementation Max Resolution Frame Rates Sampling Max Bitrate Colour Mode IPX-JPUHD4K (IntoPix) 4K 24 to 60 4:4:4 12-bits 4:2:2 12-bits 1à 2 Gbps YUV, RGB, XYZ JPEG 2000-4K (Evatronix) 8K (16K personnalisé) 24 4:4:4 12-bits 4:2:2 12-bits 4:2:0 12-bits 800 Mbps RGB, YCbCr BA109/BA110 (BarcoSilex) 4K Unknown 4:4:4 12-bits 4:2:2 12-bits Unknown YUV, RGB, XYZ 8 JPEG-2000 hardware implementations
- 7. Pres1401 RAW formats Format Mode Lossy Compression Max Sampling Max Resolution Max Frame Rate Max Birate F65RAW F65RAW-Lite YES 16-bit Linear 8K 60p 150 Mbps F65RAW-SQ YES 250 Mbps F65RAW-HFR YES 120p 1 to 2.4 Gbps REDCODE RAW REDCODE 28 YES 12-bits 16-bits 6K 100p in 6K 150p in 4K 300p in 2K 224 Mbps REDCODE 36 YES 288 Mbps REDCODE 42 YES 336 Mbps ARRIRAW 2.8K NO 12-bits Log C 3.4K 120p in 16:9 90p in 4:3 1.34 Gbps in 16:9 24p 1.79 Gbps in 4:3 24p Open Gate (3.4K) NO 75p 1 to 2.4 Gbps Canon RAW 4K RAW NO 10-bits 4K 60p > 2.7 Gbps 120p4K HRAW NO 9
- 8. Pres1401 4. Display (1) Minimum viewer-screen distance – 8K UHD screen 13 Source: NHK
- 9. Pres1401 4. Display (2) 4K/UHD monitors: towards a UHD phase 1 incompatibility • UHD Ready logo pushed by manufacturers • The 3 prerequisites of UHD phase 1 not guaranteed: – Connectors (HDMI 2.0) – Anti-piracy (HDCP 2.1) – 50p compatibility (50 images / second) 14
- 10. Pres1401 5. Connectivity 15 You need to: • Handle huge amounts of data in transfer • Have flexible interfaces • Get closer to real-time applications • Consider distance between equipment to link up
- 11. Pres1401 5. Connectivity - “4K/UHD SDI” Interfaces (1) Interface Workgroup Standard Description Features Resolution Sampling Mode Max Frame Rate 6G-SDI SMPTE 32NF-40 SMPTE ST 425-3 Mapping Image Formats into Dual Link 3G interface 4096x2160 & 3840x2160 4:2:2 & 4:2:0 10-bit image formats 30p SMPTE 32NF-70 ST 2081-10 2160-line and 1080-line Source Image and Ancillary Data Mapping for 6G-SDI 3840x2160 4:2:2 & 4:2:0 10-bit image formats 30p 4096x2160 4:2:2 10-bit image formats 30p 12G-SDI SMPTE 32NF-40 SMPTE ST 425-5 Mapping 2160 line Image Formats into Quad Link 3G interface 4096x2160 & 3840x2160 4:2:2 & 4:2:0 10-bit image formats 60p 4:2:2 & 4:4:4 10 & 12-bit image formats 30p SMPTE 32NF-70 ST 2082-10 2160-line and 1080-line Source Image and Ancillary Data Mapping for 12G-SDI 3840x2160 4:2:2 & 4:2:0 10-bit image formats 60p 4:4:4 12-bit image formats 30p 4096x2160 4:2:2 10-bit image formats 60p 4:4:4 12-bit & 4:4:4:4 10-bit image formats 30p 16
- 12. Pres1401 5. Connectivity - “4K/UHD SDI” Interfaces (2) Interface Workgroup Standard Description Features Multi-Link 10G-SDI SMPTE 32NF-40 DG SMPTE ST 2063-4 UHDTV Multi-link 10Gb/s interfaces 3840x2160 pixels 4:2:2 & 4:4:4 10 & 12-bit 100, 119.88 & 120p 4 to 6 10G-links 25G-SDI SMPTE 32NF-40 DG SMPTE ST 2062 part 2 25 Gb/s Serial Signal/Data Interface (optical interface) 3840x2160 pixels 4:4:4 10 & 12-bits up to 60p 72G - ITU-R BT.2246-2 Super-Hi Vision 72 Gbps Optical fiber interface 7680x4320 pixels 4:4:4 12-bit up to 60p 17
- 13. Pres1401 5. Connectivity - HDMI Interfaces Version Ratification Date Max Resolution Max Frame Rate Bitrate/channel Total Bitrate 1.4 May 28, 2009 4096x2160 30p 3.40 Gbps 10.2 Gbps 2.0 Sept. 4, 2013 4096x2160 60p 6 Gbps 18 Gbps 18
- 14. Pres1401 5. Connectivity - DisplayPort Interfaces Version Ratification Date Resolution Max Frame Rate Total Bitrate 1.2 2009 4K 60p (8-bits) 17.2 Gbps 1.3 Work in progress 8K - 32.4 Gbps 19
- 15. Pres1401 6. Frame Rate 20 Source : Big Buck Bunny – www.bigbuckbunny.org
- 16. Pres1401 6. Frame Rate • Frame Rate = Dynamic Resolution • Interests rising in sports, action and animation movie production • Interfaces not yet available for higher Frame Rates 21
- 17. Pres1401 7. Sampling 22 Sample Size Production & Post- Production Distribution 8-bit Any XDCAM HD based work Everywhere (except Blu-Ray & D-Cinema) 10-bit HD-SDI Any AVC-I based work Blu-Ray & D-Cinema 12-bit Minimum requirement for High-Dynamic Range (HDR) Standard No 16-bit Visual effects (VFX) High-end No See: http://www.display-central.com/free-news/display-daily/dolby-discusses-hdr-encoding/
- 19. Pres1401 8. Colour Space 24 Existing: HD & UHD phase 1 (Rec.709) HDR: UHD phase 2 (Rec.2020)
- 20. Pres1401 Major constraints around 4K/UHD 26
- 24. Pres1401 François ABBE – Mesclado – www.mesclado.com Many thanks to: Peter WILSON – HDDC – www.hddc.co.uk And Cédric Lejeune – Workflowers – www.workflowers.net mesclado Production Team: Asma Jenhani, Cherif Ben Zid, Sandrine Hamon,