Abstract

The introduction of Ultra High Definition Televisions will build upon the growing consumer desire for the highest TV image quality possible. The new High Efficiency Video Coding (HEVC) standard (H.265, MPEG-H) provides the most bandwidth-efficient delivery of HD and UHD content. HEVC was standardized in early 2013 but only addressed consumer applications. In mid 2014, the HEVC Range Extensions (RExt) profiles were standardized to address professional applications. This paper will describe true 4K UHDTV and how it achieves a greater immersive viewing experience than today's HDTV. The paper then will explore the HEVC tool enhancements for contribution and distribution applications, focusing on the 4:2:2 10-bit and 4:2:0 10-bit formats. To give a sense of picture quality versus bandwidth requirements, three experimental lab tests are discussed: UHDTV1 (3840x2160) content is HEVC-compressed and compared with a down-scaled 1080p HD version that is HEVCcompressed and then up-scaled back to UHDTV1 resolution, HEVC RExt is compared against AVC Fidelity Range Extensions for UHDTV1, and the impact of higher frame rates on the bitrate required for UHDTV1 is investigated.

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