You can do it by using OBS as the main camera source and sending that feed into TikTok Live Studio with OBS’s virtual camera, while OBS itself streams to Twitch.

Simple setup

  1. Set up your camera in OBS first.
  1. In OBS, start the virtual camera.
  1. In TikTok Live Studio, change the camera source to OBS Virtual Camera instead of your physical webcam.
  1. Keep your Twitch stream running from OBS as usual.

Why this works

OBS becomes the “master” scene manager, so your camera, overlays, and layout can be built once and reused. TikTok Live Studio then receives that OBS output as a camera feed, which lets you use the same camera on both platforms without plugging in the webcam twice.

Cleaner workflow

If you want the stream to look different on TikTok and Twitch, make a separate vertical scene in OBS for TikTok and a normal horizontal scene for Twitch. Some creators use a vertical plugin or separate scenes so each platform gets the right aspect ratio and framing.

Audio note

Be careful with audio duplication, because TikTok Live Studio can also capture mic or game audio separately. If you hear echo or double audio, disable duplicate audio capture in one app and keep only one program handling the mic/game sound.

Best practical version

The easiest reliable setup is:

  • Camera in OBS.
  • Twitch stream from OBS.
  • OBS Virtual Camera sent to TikTok Live Studio.
  • Separate audio routing checked once so nothing doubles.

TL;DR

Use OBS for the camera and stream layout, then feed OBS into TikTok Live Studio through the virtual camera while OBS handles Twitch.