Barcode Engine Configuration Parameters

The Barcode analysis engine detects and read QR codes. This section describes the parameters that you can set in the configuration section for a Barcode analysis task.

Configuration Parameter Description
FrameRate The number of frames to analyze per second of video.
Input The image track to process.
Region A region of the frame to restrict processing to.
RegionUnit The units that the Region parameter uses to specify the size and position of a region.
Type The analysis engine to use. Set this parameter to Barcode.

Output Tracks

Output track Type Description Output1This column indicates whether the information contained in the track is included by default in the output created by an output task (when you don't set the Input parameter for the output task).
Data BarcodeResult Contains a record for every frame in which a QR code is detected (multiple records are created when the same QR code appears in consecutive frames). No
DataWithSource BarcodeAndImage Contains the same information as the Data track, but each record also includes the source frame. No
Event BarcodeEvent Media Server creates a record in this track when a QR code appears or disappears. Yes
Result BarcodeResult Contains a single record for each detected QR code (the same QR code might appear in many consecutive frames). This track only contains the best result from processing a QR code. Yes
ResultWithSource BarcodeAndImage Contains the same information as the Result track, but each record also includes the best source frame. No

BarcodeResult

Field name Type Description
id UUIDData A universally unique identifier to identify the barcode (there is one UUID per barcode; records with the same UUID represent the same barcode in different frames)
text TextData The information encoded by the QR code
region RectangleData The location of the QR code in the frame

BarcodeAndImage

Field name Type Description
id UUIDData A universally unique identifier to identify the barcode (there is one UUID per barcode; records with the same UUID represent the same barcode in different frames)
text TextData The information encoded by the QR code
region RectangleData The location of the QR code in the frame
image ImageData The source frame

BarcodeEvent

Field name Type Description
id UUIDData A universally unique identifier to identify the barcode (there is one UUID per barcode; records with the same UUID represent the same barcode in different frames)
event TrackingEventData The type of event (begin/end), and the elapsed time since the barcode appeared.
text TextData The information encoded by the QR code

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