OpenLvVision_OpenCv.lvlib:VideoCapture.lvclass:VideoCapture Open_FileWithParams.vi

Opens a video file or a capturing device or an IP video stream for video capturing with API Preference.

For detailed information, please refer to the OpenCV documentation

OpenLvVision_OpenCv.lvlib:VideoCapture.lvclass:VideoCapture Open_FileWithParams.vi

cerrcodeclst

error in (no error)

The error in cluster can accept error information wired from VIs previously called. Use this information to decide if any functionality should be bypassed in the event of errors from other VIs.

The pop-up option Explain Error (or Explain Warning) gives more information about the error displayed.

    cbool

    		status

    The status boolean is either TRUE (X) for an error, or FALSE (checkmark) for no error or a warning.

    The pop-up option Explain Error (or Explain Warning) gives more information about the error displayed.

    ci32

    		code

    The code input identifies the error or warning.

    The pop-up option Explain Error (or Explain Warning) gives more information about the error displayed.

    cstr

    		source

    The source string describes the origin of the error or warning.

    The pop-up option Explain Error (or Explain Warning) gives more information about the error displayed.

cOpenLvVision__OpenCv_lvlib_VideoCapturelvclass

VideoCapture in

cstr

Filename

it can be:

name of video file (eg. video.avi)

or image sequence (eg. img_%02d.jpg, which will read samples like img_00.jpg, img_01.jpg, img_02.jpg, ...)

or URL of video stream (eg. protocol://host:port/script_name?script_params|auth)

or GStreamer pipeline string in gst-launch tool format in case if GStreamer is used as backend Note that each video stream or IP camera feed has its own URL scheme. Please refer to the documentation of source stream to know the right URL.

ci32

apiPreference

preferred Capture API backends to use. Can be used to enforce a specific reader implementation if multiple are available

c1dnclst

Params

The params parameter allows to specify extra parameters

    cnclst

    		Param

      ci32

      		VideoCaptureProperty

      ci32

      		Value

ierrcodeclst

error out

The error out cluster passes error or warning information out of a VI to be used by other VIs.

The pop-up option Explain Error (or Explain Warning) gives more information about the error displayed.

    ibool

    		status

    The status boolean is either TRUE (X) for an error, or FALSE (checkmark) for no error or a warning.

    The pop-up option Explain Error (or Explain Warning) gives more information about the error displayed.

    ii32

    		code

    The code input identifies the error or warning.

    The pop-up option Explain Error (or Explain Warning) gives more information about the error displayed.

    istr

    		source

    The source string describes the origin of the error or warning.

    The pop-up option Explain Error (or Explain Warning) gives more information about the error displayed.

iOpenLvVision__OpenCv_lvlib_VideoCapturelvclass

VideoCapture out

ibool

Success

true if the file has been successfully opened