Method WaitAny

Namespace

OpenCvSharp

Assembly

OpenCvSharp.dll

WaitAny(IEnumerable<VideoCapture>, out int[], long)

Wait for ready frames from VideoCapture.

The primary use of the function is in multi-camera environments. The method fills the ready state vector, grabs video frame, if camera is ready.

After this call use VideoCapture::retrieve() to decode and fetch frame data.

public static bool WaitAny(IEnumerable<VideoCapture> streams, out int[] readyIndex, long timeoutNs = 0)

Parameters

streams IEnumerable<VideoCapture>

input video streams

readyIndex int[]

stream indexes with grabbed frames (ready to use .retrieve() to fetch actual frame)

timeoutNs long

number of nanoseconds (0 - infinite)

Returns

bool

`true if streamReady is not empty

Exceptions

OpenCVException

Exception %Exception on stream errors (check .isOpened() to filter out malformed streams) or VideoCapture type is not supported