UPDATE: TikTok LIVE Camera Requirement

[kat]

UPDATE: with recent updates to TikTok Studio, the settings to configure the 'greenscreen' camera workaround that enables live streaming without a physical camera (thus avoiding concerns over revealing identity information, Ed.) have been moved. The options are now under Background, found within Camera properties.

Aside: for the TikTok greenscreen to work, a Virtual Camera is needed alongside a 'greenscreen' image. See "TikTok Live Studio CAMERA requirement - workaround" for full details on creating the greenscreen image and setting that up in OBS.

How To Set Up A TikTik Greenscreen
To set up a greenscreen in TikTok now, once a Camera entity has been added to the Sources panel on the left-hand side of TikTok Studio, click the 'cog' icon [1] to access Camera (properties) window overlay. Here, click Background [2], then on the Cutout 'thumbnail' [3]. In the panel now available below, set;

 - "Chroma key" (enable).
 - "Removal color", type or select a value e.g. "00FF00" (Hex) or "0, 255, 0" (RGB) for green [4].

Depending on the image being broadcast as a Virtual Camera from OBS, the 'camera' should then appear partially or fully transparent in TikTok Studio depending on the greenscreen image

Aside: the greenscreen image itself can be entirely green, or another easily removeable primary colour, or partially green, creating a 'mask' or 'cutout' as the camera.

Enabling the TikTok greenscreen in Background options.

After Camera options have been set the camera source widget will be tranparent.