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How to transcode Dolby Vision with correct color on non-Dolby device?

Below is a step‑by‑step workflow to “flatten” Dolby Vision into a single‑layer HDR10 (or SDR) encode that preserves the correct color on devices without Dolby Vision support.

At a high level, Dolby Vision streams consist of a backward‑compatible HDR10 base layer plus one or two enhancement layers (dynamic metadata) that non‑Dolby decoders ignore; our goal is to merge and tone‑map these into a single output the target device can render accurately.

1. Understand Dolby Vision’s Dual‑Layer Architecture

Dolby Vision encodes a mandatory HDR10 base layer plus one (Profile 8.1) or two (Profile 7.6) enhancement layers (RPU and optional MEL/FEL) carrying dynamic metadata.

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