The Overlay
transformation task creates an overlay for a video. The task draws regions (such as rectangles, polygons, and ellipses) that are present in the input records.
To create an overlay for a video
Create a new configuration to send to Media Server with the process
action, or open an existing configuration that you want to modify.
In the [Session]
section, add a new task by setting the EngineN
parameter. You can give the task any name, for example:
[Session] Engine0=Ingest ... Engine2=Overlay
Create a new configuration section to contain the task settings and set the following parameters:
Type
|
The transformation engine to use. Set this parameter to Overlay . |
Input
|
The name of the track that contains the metadata to use to draw the overlay. This track does not need to include the video frames. |
Color
|
(Optional) The line color to use when drawing. |
Thickness
|
(Optional) The line thickness to use when drawing. Specify the thickness in pixels. |
For example:
[Overlay] Type=Overlay Input=FaceDetection.Result Color=Red Thickness=1
OverlayInput
to specify the name of the output track from the overlay transformation task. In this example the track is named Overlay.Output
.Save and close the configuration file. Micro Focus recommends that you save your configuration files in the location specified by the ConfigDirectory
parameter.
The following example configuration ingests a video file or stream and encodes a video with an overlay that shows detected faces.
[Ingest] IngestEngine=AV [AV] Type=Video [Analysis] AnalysisEngine0=FaceDetect [FaceDetect] Type=FaceDetect NumParallel=6 MinSize=10% [Transform] TransformEngine0=Overlay [Overlay] Type=Overlay Input=FaceDetect.Result Color=Orange Thickness=1 [Encoding] EncodingEngine0=RollingBuffer [RollingBuffer] Type=RollingBuffer ImageInput=Image_1 AudioInput=None OverlayInput=Overlay.Output Stream=stream1