The Archive search component allows you to request small video clips from an object. For that, follow these steps:

  1. Search by titles or clips as described above.
  2. The search results are shown as a list of entries. Right click on the required entry. A context menu opens. The menu has two items: Video request and Frame request.
  3. Select the Video request menu item. A dialog form for the request opens (Fig. 4.5—1). There is another way to open this form: Select an entry from the list and click Video.


Fig. 4.5—1 Video request form

  1. The Date and time and Camera fields are filled in automatically.
  2. Use the Duration (sec.) field to limit video clips by time.
  3. If you want to decrease network load, set the Transfer Rate (KB/s) field to the appropriate value.
  4. in the Start area, select the time for sending the request: Click either the Immediately option button or By schedule option button.
  5. Set the waiting time by using the Data timeout (sec.) field.
  6. If the check box Open immediately is selected, the data is put into the video archive and shown immediately. Otherwise, the data is only sent to the archive. To view such data, use the Monitoring reports component.
  7. If you try to set the value of the Duration (sec.) field to over 120, the value of 120 is offered. This is done to remind the user that such requests can export a big data file from a video archive on Agent Of Control's side. If you want to turn this limitation off, click Settings in the lower-left area of the Archive Search area. A window opens. In the window, change the value of the Maximum duration for loaded video (sec) field. (Fig. 4.5—2).


Fig. 4.5—2 Configuring video clip duration

  1. After you fill in all the fields, click Create.
  2. You can check how the task is being performed in the Downloads tab. While the video clip is being downloaded, it file size, loaded size, and transfer rate are shown (Fig. 4.5—3). You can pause the download at any moment by clicking Pause.


Fig. 4.5—3 Loading video clips in Downloads tab
_Note. In case data have stopped coming during the download, for example if connection with the object is lost, download will be restarted after a random time interval from 1 to 60 seconds. In case of the attempt failure, attempts will be made ​​at intervals of 1 minute._
Information on the time remaining to the restart is displayed in the Comment field (Fig. 4.5—4). Any time you can restart loading manually using the Restart button.
Fig. 4.5—4 Time remaining to the restart

  1. If the data is loaded successfully and the Open immediately check box is selected, the downloaded clip is played with Axxon Player (Fig. 4.5—5).


Fig. 4.5—5 Playing downloaded video clip
The successfully completed task is marked in green. Double click such entry to see the corresponding frame or play the corresponding video clip.
The Archive search component supports the download resume function. If the connection to Agent Of Control breaks during a download, the task status changes to Network Error after two minutes' time-out. The Comment field shows the information that the data is no longer being transferred. Ten seconds later the system start periodic attempts to resume the download. It tries to do it every minute. After the connection to Agent Of Control is reestablished, the data is downloaded not from the beginning, but from the point where the connection was lost.
The download resume function uses temporary files. They are saved both on Agent Of Control and on Server Of Control. These files are stored for three days. After that, they are removed. For example, if you start a download, then click Pause, and resume the download five days later, the download starts from the beginning.
To change the storage period for the temporary files, go to the registry and create the value "StoreVideoFiles" in the HKLM\SOFTWARE\BITSoft\VHOST\VHostService branch and enter the required data in days. Then restart Videosrv.exe.
If you want to remove old tasks from the task list, go to Downloads tab and click Remove button. Tasks are stored in the database for max. 100 days. If you want to limit the number of tasks that are shown in the Downloads tab, use the Show tasks for last N days field in upper-right corner of the screen (Fig. 4.5—6).
Fig. 4.5—6 Configuring the time of showing downloads
Important:

  1. If you request a clip that is longer than one minute, you have to increase the value of the Data timeout (sec.) parameter. You must do it, because some time is required for Agent Of Control to export large video clip.

If Intellect closes, all tasks with the Downloading status are paused. Start these tasks manually to resume.