HDR Standards & Formats 4

Question 1

What is the bit depth requirement for Dolby Vision content in Profile 5 (OTT streaming)?

Accepted Answer

12-bit

Answer

Dolby Vision Profile 5 uses 12-bit HEVC encoding, enabling a wider luminance range and finer gradations than 10-bit HDR10.

Question 2

Which HDR standard was co-developed by BBC and NHK and is specifically engineered for live broadcast compatibility with SDR receivers?

Accepted Answer

Hybrid Log-Gamma (HLG)

Answer

HLG was jointly developed by BBC and NHK to allow a single signal to render acceptably on both legacy SDR and modern HDR displays.

Question 3

In HDR10 static metadata, what does MaxFALL represent?

Accepted Answer

The average light level of the brightest frame in the entire program

Answer

MaxFALL (Maximum Frame Average Light Level) is the highest average luminance value measured across any single frame in the content.

Question 4

The Consumer Electronics Association specification CEA-861.3 addresses HDR by defining how metadata is carried in which signal path?

Accepted Answer

HDMI static HDR metadata in the InfoFrame

Answer

CEA-861.3 standardizes the HDR Static Metadata Descriptor transmitted via HDMI HDR InfoFrames, signaling EOTF type and mastering display data to the TV.

Question 5

Which codec is mandated for encoding HDR10+ content in the Amazon Prime Video streaming pipeline?

Accepted Answer

HEVC (H.265)

Answer

HDR10+ content on Amazon Prime Video is encoded in HEVC (H.265) to carry the 10-bit signal and dynamic metadata.

(HDR) High Dynamic Range Certification Practice Test

(HDR) High Dynamic Range Certification Practice Test

HDR Standards & Formats 4