不同HDR技术的比较

HDR技术	优点	缺点
Dolby VisionTM	- 12-bit colors - Luminance up to 10000 nits (4000 nits current target) - future proof - Dynamic Metadata(per scene) - SMPTE ST 2094-10 - Dual Layer DV: Backward compatibility with legacy SCR TVs and STB - Early Adoption by TV mannufacturers - Support for licensed DV product (SDK, docs, ref, code, etc.)	- Dolby Commercial License required - Single Layer DV: No backward compatibility with legacy SDR TVs and STB - Not appropriate for live content
HDR10	- Royalty free - Early adoption by TV manufacturers - Can be derived from Dobly Vision mezzanine files - Can be used for live and pre-recorded contents	- Lack of Dynamic Metadata (per scene) - 10-bit colors - Luminance up to 4000 nits (1000 nits current target)
HLG	- License not required - No Metadata required - Backward compatibility with SDR - Can be used for live and pre-recorded content, Live is a target	- HLG 1000 nits limit (OK for today, may not be future proof for years to come) - 10-bit colors
HRD10+	- Royalty free - Dynamic Metadata (scene based) - SMPTE ST 2094-40	- Administrative free required (even thought there is no formal royalties) - Late introduction - Requires additional HDR10+ metadata creation (complicates existing workflow based on DV/HDR10) - 10-bit colors - Luminance up to 4000 nits (1000 nits current target)