HDR HDR Content Distribution & Delivery 1 — Questions and Answers
Question 1: Which streaming protocol is most commonly used to deliver HDR video content over the internet with adaptive bitrate support?
- RTMP
- HLS (HTTP Live Streaming) (Correct answer)
- FTP
- SFTP
Correct answer: HLS (HTTP Live Streaming)
HLS is the dominant protocol for internet HDR streaming, supporting adaptive bitrate delivery to adjust quality based on available bandwidth while preserving HDR metadata.
Question 2: What is the minimum recommended bit depth for encoding HDR video for streaming distribution?
- 8-bit
- 10-bit (Correct answer)
- 12-bit
- 16-bit
Correct answer: 10-bit
10-bit encoding is the minimum standard for HDR distribution, as it provides sufficient tonal gradations to represent HDR content without banding artifacts.
Question 3: Which codec is most widely used for HDR10 content distribution on Ultra HD Blu-ray discs?
- H.264/AVC
- VP9
- HEVC/H.265 (Correct answer)
- AV1
Correct answer: HEVC/H.265
HEVC (H.265) is the required codec for Ultra HD Blu-ray, providing the compression efficiency needed to deliver 4K HDR10 video at practical bitrates on disc.
Question 4: What HDR metadata format is encapsulated within the SEI (Supplemental Enhancement Information) messages of an HEVC stream?
- Dolby Vision RPU
- HDR10 static metadata (Correct answer)
- HDR10+ dynamic metadata
- HLG metadata
Correct answer: HDR10 static metadata
HDR10 static metadata, including MaxCLL and MaxFALL values, is carried within HEVC SEI messages as per SMPTE ST 2086 specifications.
Question 5: Which HDR format uses a backward-compatible approach that does not require metadata, making it simpler to distribute over broadcast television?
- HDR10
- Dolby Vision
- HDR10+
- HLG (Hybrid Log-Gamma) (Correct answer)
Correct answer: HLG (Hybrid Log-Gamma)
HLG (Hybrid Log-Gamma) was designed for broadcast distribution and is backward compatible with SDR displays, requiring no metadata and fitting standard broadcast workflows.
Question 6: What is the purpose of content packaging in HDR distribution for OTT platforms?
- Generating HDR thumbnail images for user interfaces
- Encrypting and formatting HDR streams with DRM for secure delivery to licensed devices (Correct answer)
- Converting HDR masters to SDR for mobile devices
- Applying dynamic range adjustments for different markets
Correct answer: Encrypting and formatting HDR streams with DRM for secure delivery to licensed devices
Content packaging for OTT combines DRM encryption, manifest generation, and multi-track formatting to ensure HDR content is securely delivered only to authorized, licensed devices.
HDR HDR Content Distribution & Delivery 1
Which streaming protocol is most commonly used to deliver HDR video content over the internet with adaptive bitrate support?