Video Metadata
What Is Video Metadata in Dahua Systems?
Video metadata is AI-generated structured information derived from video footage that describes which target objects are detected in the scene and which attributes can be associated with them. In Dahua systems, video metadata is automatically extracted from the video stream through deep learning video analysis, capturing people, vehicles, and non-motor vehicles together with relevant attribute data. Depending on the system, metadata generation can take place either at camera level or on the NVR and runs in the background as part of ongoing video analytics. This makes video metadata a key foundation for advanced intelligent functions such as AcuPick, Target Video, attribute-based search, alarm workflows, and statistical analysis.
Video metadata is extracted from object-related attributes, typically covering around 22 characteristics, although their exact number and type may vary depending on the specific device.
- Person: age, gender, top color, top type, bottom color, bottom type, hat, bag, umbrella.
- Motor vehicle: license plate, plate color, vehicle shape, vehicle model, vehicle logo, phone use, seatbelt, vehicle interior, country/region.
- Non-motor vehicle: vehicle model, vehicle color, number of persons, helmet.
What Practical Benefits Does Dahua Video Metadata Offer?
Video metadata acts as a structured information layer within Dahua systems and provides the foundation for functions such as AcuPick, Target Video, and other attribute-based analysis mechanisms. Instead of searching through video footage frame by frame, relevant incidents, movements, and target objects can be located more quickly on the basis of detected object attributes. This is particularly beneficial in scenarios with high recording volumes or complex operational processes, as search processes shift from manual visual review to data-based analysis. For day-to-day operations, this means greater efficiency in incident investigation, clearer reconstruction of events, and a noticeable reduction in time and resource requirements.
These Dahua IP Cameras support the video metadata feature:
These Dahua NVRs support the video metadata feature: