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General information about the virtual Video capture device

Axxon PSIM implements a way to work with a virtual Video video capture device. This way assumes that Axxon PSIM operates in a test mode and imitates the video stream feed to a virtual Video capture device by playing back videos video (video recordingsrecording). There In Axxon PSIM there are two types of virtual video capture devices in Axxon PSIM: 

1. Virtual bench. It plays back video recordings in mkvMKV, MP4, mp4 and avi AVI formats, for which DirectShow filters (codecs) are installed on in Windows OS.
2. Virtual. It plays back video recordings in internalthe Axxon PSIM format and files in .avi format internal format only.

Virtual Video video capture devices do not don't support multistreaming mode. To ensure the correct operation of a virtual Video video capture device, including the option of displaying the video archive and archiving, you must disable the multistreaming mode (see Configuration of Configuring the multistream video).

It is not recommended to use We don't recommend using an LAV Splitter to playback video recordings in the Virtual Video play back videos on the virtual video capture device. The FFDSHOW mediadecoder is preferable.

Creating and configuring the virtual

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video capture device

Create To create and configure the virtual Video video capture device as follows, do the following:

1. Set the Use virtual grabber checkbox (see The Settings panel of the Video subsystem section). Before that, shut down Axxon PSIM.
   
2. On the Hardware tab (1) create Create the Video capture device object (2)on the Hardware tab.
3. Set the Virtual or Virtual bench type of the Video video capture device, depending on the type of the file that will be used you want to use for imitation of the video signal (3).
   
4. Click the Apply button (4).
5. Create the Camera child object for the Video capture device (2) object.

6. Specify the storage for the video recording that is used for the that you want to use for video signal imitation in the Basic settings tab (3) of the selected Camera object (4).   
   

   Info
   title Note
   We don't recommend using videos compressed by the Wavelet codec, as their use significantly increases the load on the server.

7. Click the Apply button (5).
   If Axxon PSIM does not doesn't find files for playback within 1 one minute after clicking the Apply button, the file search will be is interrupted.
   

   Note
   title Attention!
   The selected folder

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1. mustn't contain the video recordings of

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1. the Axxon PSIM internal format and AVI

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1. files at the same time.

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1. We recommend using one video recording and

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1. specifying the folder containing only the recording or the path to the file. If you need to use several video recordings, select the recordings with similar codec and resolution. This

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1. helps to avoid delays in Axxon PSIM work when switching between the recordings.

Features of playing

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back 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 is played back in a loop. 

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

You can disable looping of a separate file for the Virtual bench video capture device 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 includes the use of advanced options.
   2. The playFileOnce value corresponds to the "Single Play" option (you must specify the parameter name should be specified , strictly case-sensitive).
   3. after After the '"=' " symbol, specify the value that should must be applied (the correct values are true, TRUE, or 1 for the "On" value / false, FALSE or 0 for the "Off" value).
      
      
2. Set the ​playFileOnce = 1 registry key (see Registry keys reference guide).

If there are several files in the folder, they will be are played back in the order set in the latest modification. Files You can also be sorted sort files by name and time of creation during playback. The Set the sorting order is set by the VirtualGrabberSortMode registry parameter (see see Registry keys reference guide).

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