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1. Run the IP Device Discovery Wizard (see Searching, adding, configuring, and removing IP devices).
2. From the Vendor drop-down list, select Virtual.

3. Select Virtual from the Model drop-down list to emulate a single-stream camera. From the Model drop-down list, select Virtual several streams to emulate a camera supporting multiple streams.
   

4. Click the button.

5. In the Folder field, specify the storage location of the video that you want to use to imitate a video signal.
   

   Infonote
   title NoteAttention!
   You must not use video with B-frames. You can check the presence of B-frames in a video using the ffprobe utility that is included in the FFmpeg package: Code Block language shell ffprobe -v error -select_streams v:0 -show_entries stream=has_b_frames -of default=noprint_wrappers=1:nokey=1 d:\Dev\!temp\1.avi where, instead of d:\Dev!temp\1.avi, specify the actual path to the file. The output value: 0—there are no B-frames in the video. greater than 0—the video contains B-frames. You must not use the H.263 codec. You can identify the codec, for example, using the MediaInfo utility. If there are many files in the folder, they are played in a random order. Scanning for files in a specified directory is limited to one minute.

6. By default, the video is played in a loop. To play the video once, select Yes in the Play the file once parameter.
   

7. Click the Apply button.

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