vvas_xskipframe

vvas_xskipframe plugin is used in video analytics pipelines in conjunction with vvas_xreorderframe plugin to control inference rate. It achieves this by using the user configured infer-interval property and determines which frames to be served for inference and which frames to be skipped for inference. For example, if the infer-interval is 1, all frames are sent for inference, if infer-interval is 2, then every alternate frame is sent for inference.

This element has one sink pad and two source pads. It is multi-stream aware and its sink pad can connect with vvas_xfunnel element to accept frames from multiple streams. One source pad is connected to vvas_xinfer element to send the frames that are marked for inference, another source pad is connected to vvas_xreorderframe to send the frames marked skipped.

vvas_xskipframe plugin adds frame id to the GstVvasSrcIDMeta metadata so that vvas_xreorderframe plugin can identify the order of the frames.

Input and Output

vvas_xskipframe plugin is format agnostic and can accept any format on input and output pads.

Control Parameters and Plugin Properties

The following table lists the GStreamer plugin properties supported by the vvas_xskipframe plugin.

Table 9: vvas_xskipframe plugin properties

Property Name	Type	Range	Default	Description
infer-interval	UINT	1 to 7	1	Every n-th frame will be pushed to inference source pad. Here, ‘n’ represents inference interval.