HDR review

Farbstrom supports color-critical HDR review in H.265 (HEVC), played directly in the browser on Apple HDR hardware. A native viewer, Farbplay, is in development to bring HDR review to other platforms (see below).

In the browser (LLHLS, Apple HDR devices)

Browser HDR works only with the LLHLS delivery mode — WebRTC does not carry HDR. For a room set to LLHLS, the HDR image renders directly in the browser on Apple devices with HDR-capable screens:

• Safari and Chrome on Apple devices with HDR-capable displays (e.g. MacBook Pro Liquid Retina XDR, Pro Display XDR).
• Any browser on iPadOS and iOS devices with HDR-capable screens.

On other platforms and non-HDR displays LLHLS still plays, but won't render true HDR.

LLHLS trades a little latency for this reach — typically 2–5 seconds. When sub-second HDR matters, that's the gap the forthcoming Farbplay app fills (see below).

Requirements

• An HDR-capable Apple display (Mac, iPad, or iPhone) for browser HDR playback.
• A source encoded in H.265 (HEVC) — see Encoders and OBS Studio.
• The room set to LLHLS delivery mode by the admin when creating the room. (WebRTC will not display HDR.)

Farbplay (in development)

Browser HDR is only available over LLHLS, and LLHLS adds a few seconds of latency. Farbplay is a native HDR SRT viewer being built to close that gap — sub-second HDR in H.265 over SRT, on platforms beyond Apple's HDR browsers. It is currently in development and not yet publicly available.

Farbplay will connect from the ordinary room link, mirroring the browser viewer's waiting-room and removal behavior. The admin room settings already include a Farbplay App only (SRT · H.265) delivery mode in anticipation: in that mode the browser viewer is call-only (conference, chat, roster, and files, with a "watch in Farbplay" placeholder instead of a video tile). Until Farbplay ships, use LLHLS on an Apple HDR device for HDR review.