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General information about the virtual Video Capture Device

Intellect implements a way to One can work with a virtual Video Capture Device in INTELLECT™ software package. This way assumes that INTELLECT™ Intellect operates in a test mode and consists of imitation of imitates the video stream feed to virtual Video Capture Device by playing back ready-made video recording. The following video recordings are played back:videos (video recordings). There are two types of virtual Video Capture Devices in Intellect: 

1. Virtual bench. It plays back video recordings in mkv, mp4 and avi
2. Video recordings of internal INTELLECT™ format;
3. AVI-files in formats for which DirectShow filters ( codecs ) are installed in on Windows OS.
4. Virtual. It plays back video recordings in internal Intellect format and files in .avi format.

Virtual Video Capture Devices do not support multistreaming. To ensure the correct operation of a virtual Video Capture Device, including displaying the video archive and archiving, disable the multistreaming (see Configuration of multistream video).

It is not recommended to use LAV Splitter to playback video recordings in the Virtual Video Capture Device. The FFDSHOW mediadecoder is preferable.

Creating and configuring the virtual Video Capture Device

Create and configure the To create and configure a virtual Video Capture Device , do the followingas follows:

1. Set the Use virtual grabber checkbox (The Settings panel of the Video subsystem section in Tweake.exe utility), having ). Before that shut down INTELLECT™ beforehand Intellect.
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2. On the Hardware tab (1) create the Video Capture Device object (2).
3. Set the Virtual or Virtual bench type of the Video Capture Device depending on the type of the file that will be used for imitation of the video signal (3).
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4. Click the Apply button (4).
5. Create the Camera child object for the Video Capture Device (2).

6. Specify the storage for the video recording that is

   to be

   used for the video signal imitation in the Basic settings tab (3) of the selected Camera object (4).        
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   title Note
   It isn’t recommended to use videos compressed by the Wavelet codec, as their use significantly increases the load on the Server.

   
   

7. Click the Apply button (5).
   If Intellect does not find files for playback within one minute after clicking the Apply button, the file search will be interrupted.

Features of playing black the files in the virtual Video Capture Device

As a result of the above settings, the video recording file from the selected folder will be played back in a loop. 

If you set path to a separate file not a folder for a Virtual type, the file is played once without looping.

You can disable looping of a separate file for the Virtual bench type device in one of the following ways:

1. Enter "OPTIONS:playFileOnce=true" in the IP address field on the Video Capture Device settings panel:
   1. OPTIONS: enables the use of advanced options.
   2. playFileOnce corresponds to the "Single Play" option (the parameter name should be specified strictly case-sensitive).
   3. after the '=' symbol specify the value that should be applied (the correct values are true, TRUE, or 1 for the "On" value / false, FALSE or 0 for the "Off" value).
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2. Set the ​playFileOnce = 1 registry key (see Registry keys reference guide).

If there are several files in the folder, they are to will be played back in the order set in the latest modification.

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Files can also be sorted by

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name and

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time of creation during playback. The sorting order is set by the VirtualGrabberSortMode registry parameter (see Registry keys reference guide).

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When playing back the files, the system sends events to the Debug window displaying the playback status (see CAM Camera). There are also reactions for controlling video recordings playback in virtual Video Capture Device using the scripts (see GRABBER Video capture device).