Dolby Vision Profiles and Levels
Dolby Vision profiles describe stream features while levels describe limits such as decoded pixel rate and bitrate.
Read dvhe.05.06 as a delivery description: 05 identifies Dolby Vision Profile 5, while 06 identifies Level 6. The two numbers describe different axes of compatibility.
| Item | Question answered |
|---|---|
| Profile | Which codec, signal interpretation, layer arrangement, and metadata carriage apply? |
| Level | Which pixel-rate, width, and bitrate limits apply within that arrangement? |
| Base compatibility ID | Which other defined signal interpretation can the base provide? |
Estimate the processing dimension
Pixel rate connects resolution and frame rate. A 3840 × 2160 picture has 8,294,400 pixel positions. At 24 frames per second, that is 199,065,600 positions per second; at 60, it is 497,664,000.
The latter rate is 2.5 times the former even though both files are described as 4K. A higher permitted level can accommodate greater processing demand, while width and coded-bitrate limits also have to fit. Comparing only frame size misses those other limits.
The Dolby Vision level and the underlying codec's own profile/level constraints both matter. Support needs to cover the delivered combination, not just one isolated label.
Resolve two common kinds of notation
A complete codec string: profile and level appear as separate fields in a defined syntax. It supplies a compact signal for capability matching.
Shorthand such as 8.1: this commonly names Profile 8 with base cross-compatibility ID 1, the HDR10-compatible form. The number after the point is not the level field. A report saying 8.1 and dvhe.08.06 can consequently describe one stream: Profile 8, HDR10-compatible base, Level 6.
Profile numbers identify feature arrangements rather than chronological quality tiers. A different profile can change the codec or base interpretation without changing the production master.
For an Emby playback report, retain the full codec, profile, compatibility, level, layer, and container information. Then place it beside the delivered stream and actual decoder/output capabilities. The individual profile pages explain the arrangements; fallback describes which other presentation may be available.