HDR & colour
LLDV (Low-Latency Dolby Vision)
Dolby Vision tone-mapped by the player and sent as 12-bit 4:2:2 — usable on any HDR10 display via the Vertex².
What is it?
In LLDV mode the source (Apple TV 4K, Shield Pro, Xbox, Oppo, Sony/Panasonic players) does the Dolby Vision composition and tone mapping itself, using the display limits (primaries, min/max nits) it reads from the EDID. It then sends an ordinary 12-bit YCbCr 4:2:2 signal with a PQ curve. It was designed for gaming (no extra TV processing) — but it also means an HDR10-only display can show the result.
Why it matters with the HDfury Vertex²
By presenting a custom Dolby Vision EDID block, the HDfury Vertex² makes the player output LLDV for a projector or TV that has no Dolby Vision at all, and adds an HDR10 infoframe so the display switches to HDR. Result: dynamic, per-scene tone mapping on JVC/Sony/Epson projectors and every Samsung TV. The OLED shows 'LLDV' on the RX line when it works.
How to use it on the Vertex²
Quick route: Web server → EDID → Custom → EDID 10 (Sony A1 LLDV BT2020). Tunable route: Automix + 'Custom DV string', then HDR/DV → DV datablock creator (interface 'Low Latency 12-bit 4:2:2', primaries, Tmax/Tmin) and tick 'Use custom HDR for TX0/TX1 when input is LLDV'. Restart the source. See the full Dolby Vision guide.
Related terms
- Dolby Vision (DV) — Dolby's premium HDR format: 12-bit, dynamic metadata, tone-mapped per scene.
- EDID — The 'ID card' a display sends to a source listing what it can do — the Vertex² lets you rewrite it.
- HDR metadata: MaxCLL, MaxFALL, mastering display — The numbers inside an HDR10 signal that tell a display how bright the content is.
- Tmax / Tmin (DV datablock luminance) — The maximum and minimum brightness you tell a Dolby Vision player your display can show.