Use a Phone Camera as a Source in OBS

The short answer

Yes, a phone camera can be an OBS video source. OBS has no built-in way to talk to a phone directly. The phone's picture has to arrive in one of three forms: as a device the computer already recognizes as a camera, as a network video stream, or as a capture-card input. Once it does, you add it in OBS like any other camera. The main limitation for speech capture is that the video route and the audio route are separate decisions. Whether the phone's microphone comes through at all depends on the method and app you use. Wireless connections can also add delay, which pushes your voice out of sync with your lips.

How it differs from a regular webcam

A USB webcam usually appears in OBS as a video capture device as soon as it is plugged in. If it has a built-in microphone, that microphone appears as a separate audio input. A phone needs an intermediary to look like a camera to the computer. That intermediary can be an operating-system feature, a companion app on both the phone and the computer, or a hardware capture path. The intermediary decides what reaches OBS: video only, or video plus audio. It also affects how much delay the signal picks up on the way.

Common ways to get the phone into OBS

• Built-in operating-system support: recent versions of macOS can use a nearby iPhone as a camera through Continuity Camera, and it then appears as a selectable video device.
• Companion webcam apps: third-party apps such as DroidCam, Camo or Iriun install on the phone and the computer and present the phone as a camera, over USB or over a local network. Feature sets, including audio support, vary by app and version.
• Network streams: some phone apps publish a stream that OBS can open as a media source, or through a plugin for a network video protocol.
• Capture card: phones that can output video over a wired display connection can feed a capture card, which OBS sees as a video capture device. The phone's screen interface may appear in the image unless the app offers a clean output.

In OBS, a phone presented as a camera is added with the Video Capture Device source. A network stream normally goes in through a Media Source or a plugin-provided source instead.

What this means for capturing your voice

Decide early which microphone you will speak into. Don't assume the phone's microphone is part of the video feed. Some routes carry only video. Others offer phone audio as a separate device or as part of the stream. If the phone sits farther from you than a desk microphone or headset would, it will pick up more room sound in proportion to your voice. That usually makes speech sound more distant.

• Pick one microphone and mute the others in the OBS Audio Mixer. Two live sources picking up the same voice can produce doubling or a hollow, comb-like sound.
• Check for delay. A wireless phone feed may reach OBS later than a microphone plugged into the computer. Use the Sync Offset field in Advanced Audio Properties to delay the audio until it lines up with the picture.
• If you do use the phone's microphone, confirm in the Audio Mixer that the source shows movement on its level meter when you speak.
• Keep the connection stable. A wired USB connection is generally less prone to drops and varying delay than a busy Wi-Fi network.

Using the phone feed in video calls

If you send OBS's output to a conferencing app through the OBS Virtual Camera, keep in mind that the virtual camera carries video only. The calling app still needs its own microphone selection. You can choose your physical microphone there directly, or use a separate virtual audio routing tool if you want OBS's processed audio in the call. When you send audio straight to the call and video through OBS, any lip-sync correction you made inside OBS does not apply to that audio path.

Evidence gaps

No specific test data, latency figures, app versions, prices or device compatibility lists were available for this guide. Statements about particular apps reflect commonly documented general behavior, not measurements. Check current app documentation for audio support, connection options and supported operating systems before relying on a specific setup.