Dolby Vision
Dolby Vision is a proprietary HDR video format from Dolby that uses dynamic metadata to adjust brightness and color scene by scene for each display. Dolby Vision supports up to 12-bit color and very high peak brightness. Many TVs, streaming devices and phones support it, including iPhones, which record in Dolby Vision. Devices must be licensed to decode it.
Why it matters
Dolby Vision is a mark of premium quality for OTT services and many viewers look for it. It requires licensed devices and adds mastering and encoding work. User-upload platforms also face it, since iPhones record Dolby Vision HDR, and mishandling those clips leads to strange colors.
How it works
- Content is mastered in HDR, often at 12-bit, with wide Rec. 2020 color.
- Dolby tools analyze each scene and write dynamic metadata describing its brightness.
- The video is encoded with that metadata, often on an HEVC or AV1 base layer.
- A licensed device reads the metadata and tunes the picture to its own screen, scene by scene.
Dolby Vision vs HDR10: which is better?
Dolby Vision usually looks better on capable screens because its dynamic metadata tunes each scene. It also supports up to 12-bit color. HDR10 is royalty-free and works on almost every HDR device. Services commonly ship both, and Apple recommends offering both for Apple TV.
Why do iPhone videos look wrong after uploading?
iPhone videos often look wrong because they are recorded in Dolby Vision HDR and the upload pipeline treats them as standard video. Brightness and color tags get dropped, so the clip looks too bright or washed out. Correct HDR handling or proper conversion to SDR fixes it.
Where it's used
OTT services stream Dolby Vision on premium titles for the strongest HDR picture on compatible screens. Video platforms and short video apps must handle it correctly in iPhone uploads to avoid odd colors.
By the numbers
- Dolby Vision supports up to 12-bit color depth and up to 10,000 nits peak brightness. (Wikipedia: Dolby Vision)
- Apple's HLS specification requires Dolby Vision streams to use Profile 5, single layer 10-bit HEVC. (Apple Developer: HLS Authoring Specification for Apple Devices)
