Implement core video features in the Zoom Video SDK for Windows, including checking video status, starting and stopping video, and rendering user video.

IZoomVideoSDKVideoHelper reference

Core features


The Video SDK for Windows lets you programmatically control user video during a session: check video status, start video, stop video, and render a user's video. For switching cameras, mirroring, and rotating, see [Camera controls](/docs/video-sdk/windows/video/camera-controls/).

You control video with `IZoomVideoSDKVideoHelper`, obtained from `getVideoHelper`.

## Check whether video is on

To check whether a user has their video on, read `isOn` from the user's `ZoomVideoSDKVideoStatus`.

```cpp
// Get the video status for the user.
ZoomVideoSDKVideoStatus videoStatus = pUserInfo->getVideoStatus();
// Check whether the user's video is on.
bool isVideoOn = videoStatus.isOn;
```

## Start video

To start the local user's video, call `startVideo` on the `IZoomVideoSDKVideoHelper`.

```cpp
// Get the IZoomVideoSDKVideoHelper to perform video actions.
IZoomVideoSDKVideoHelper* pVideoHelper = m_pVideoSDK->getVideoHelper();
if (pVideoHelper) {
    // Start the local user's video.
    pVideoHelper->startVideo();
}
```

## Stop video

To stop displaying the local user's video, call `stopVideo`.

```cpp
// Get the IZoomVideoSDKVideoHelper to perform video actions.
IZoomVideoSDKVideoHelper* pVideoHelper = m_pVideoSDK->getVideoHelper();
if (pVideoHelper) {
    // Stop the local user's video.
    pVideoHelper->stopVideo();
}
```

## Render a user's video

On Windows, you render a user's video by subscribing to their raw video data pipe and drawing the YUV frames you receive. For the full subscription and rendering flow, see [Receive raw data](/docs/video-sdk/windows/raw-data/receive-raw-data/).
