Exporting video with Video Analytics meta data is very useful in the process of optimization of Video Content Analytics performance. One could configure VA, record particular scene and then replay this scene over and over again using different VA configurations.
Moreover the video could be exported and replayed multiple times with different VA configuration settings.
This article describes the different possibilities - VRM eXpport Wizard and Web Interface of a Bosch Camera. The choice of the tool depends on the way the camera and recording are managed.
Camera that is managed by non Bosch Video Management System (also no VRM recording), or is not recording - Camera Web Interface
VRM recorded video - VRM eXport Wizard
Camera that is managed by Bosch Video Management System - VRM eXport Wizard
Note: Forensic search makes possible to search the meta data of the recorded video and select the relevant export stamp. Forensic search is part of BVMS OC and BVMS Viewer
Export of VRM recorded video using VRM eXport Wizard
VRM eXport Wizard description:
is a tool that records or transcodes VRM recorded video.
eXport Wizard is part of VRM installation package
For more details how to use the tool, please read:
version 2.10 > Document attached
Export process with VRM eXport Wizard
VA task should be configured and enabled for the Camera, thus meta data is created and included in the video stream
Alarm Recording should be enabled
Use VRM eXport Wizard to connect to VRM
chose the camera and the time span to be exported. There is no option to replay or search for alarms with this tool, you should know the time span you need to export.
choose location for the export
Note: The exported video created as directory, called export_date_time. It includes the following files and directories.
Record of a video from a Bosch camera
If it is managed by non Bosch Video Management System, or is not recording, use the Web Interface of the camera.
download and install MPEG ActiveX (https://downloadstore.boschsecurity.com/)
configure Video Analytics
click the recording button to start the recording and click it again to stop it. The video will be stored on the local drive
T he exported / recorded videos can be imported in BVMS OC 10.01. There it is possible to edit the VA Task settings for this particular export and to search the video for alarms. In that way is possible to apply different VA settings to the same video export, compare the results and find the optimal VA settings for the particular scene.
... View more
In order to start to analyze and optimize Video Analytics settings for particular customer set up, we need initial information and export of example video.
This article describes the absolute minimum information we need in order to start analyzing and optimizing Video Analytics performance.
Video Analytics (VA) task performance optimization
Please provide the following details:
Symptom specific Information
Describe the expected result from the VA task.
It is important to get detailed information of the results VA should provide.
Define what is the customer’s priority:
High sensitivity - miss as few true alarms as possible, but increases the likelihood of more false alarms!
High precision – have less false alarms, but accept the risk to miss true alarm!
Using VA is always based on balancing between sensitivity and precision. It is not always possible to get high sensitivity and high precision at the same time.
Provide an export of recorded video that should contain:
for basic understanding of meta data, please read the latest Software Manual Video Content Analytics
for instructions about doing a video export with meta data, please read the article: How to export video including meta data (Export video including Video Analytics meta data).
Couple of examples of false alarms (in case false alarms are the issue)
Provide the number of false alarms per time span (per day, per week, etc.)
What would be acceptable as a number of false alarms per time span
Couple of examples of situation that should have caused alarm, but VA did not generate the alarm as expected.
In this case please provide the time stamp of the event and short description
Screenshot from the Camera Calibration Verification page - only in case calibration is needed for the particular VA functionality
access the Calibration Verification page of the camera (via the Configuration Manager or Web Interface)
provide screenshot from the verification of each parameter used for camera calibration
Note: For more information on Camera Calibration and Calibration Verification, please check:
How To calibrate camera for Video Analytics?
... View more
Related Products: Configuration Manager 7.00 and above.
This article shows how to use recorded video in Configuration Manager in order to calibrate a camera and to configure a task.
Camera Calibration using Recorded Video
It is possible to calibrate camera using already recorded video in Configuration Manager 7.0. This feature is independent of the camera firmware version.
Configure a Video Analytics Task using Recorded Video
It is possible to configure a Video Analytics Task, using already recorded video in Configuration Manger 7.00 and above. This includes initial Task configuration, verification and then further performance analysis over the time and fine-tuning of the task parameters.
Note: There are multiple video analytics how-to videos in the following lists:
Calibration playlist: https://www.youtube.com/playlist?list=PLz97rFi-OzLfI2F4sP-ocX3BhX0rtJvgt
Video Analytic how-to playlist: https://www.youtube.com/playlist?list=PLz97rFi-OzLdPrzs-SR-g1oo4RkV9mvf5
... View more