Page History

The SaveToFile method is in use used to save in to a file the frame from the camera receiving that is received in the data parameter of the FRAME_SENT event.

Syntax of for method invocation:

function  SaveToFile (path: String,  data: String,  param : Boolean)

Saving of frame is also can be performed You can also save the frame using the GET_FRAME reaction of the CAM object. It is required to To do this, you must specify the path for saving the file with the frame in the path parameter of this reaction. The FRAME_SENT event is created in the system if the GET_FRAME reaction has not got doesn't have the path parameter. In the data parameter of the FRAME_SENT event, the video image frame which is to frame that must be saved using the SaveToFile method is stored.

The reaction allows exporting of video image you to export a frame even if the camera is not displaying in the Monitor window Video surveillance monitor.

Method argument:

1. path – mandatory is a required argument. Specifies It specifies the full path to save the file with a frame.
2. data – mandatory is a required argument. Specifies It specifies data to save in to a file.
3. param – mandatory argument. Defines necessity of conversion from base 64 is a required argument. It determines whether to transcode from base64 format before saving. Possible parameter values:
   1. true – decode —transcode from base64 before saving;
   2. false – —save the string without conversiontranscoding.

Time of frame saving depends on the anchor frames frequencyreference frame rate. The higher the anchor frames frequencyreference frame rate, the less shorter the time.

Example.

...

When a frame is received from Camera 1

...

, save it to the test.jpg file on

...

disk D

...

:

if (Event.SourceType == "CAM" && Event.SourceId == "1" && Event.Action == "FRAME_SENT")
  {
    SaveToFile("D:\\test.jpg",Event.GetParam("data"),true);
  }