Lets subclasses aggregate frames that are ready. Subclasses should iterate the GstElement.sinkpads and use the already mapped #GstVideoFrame from gstvideo.video_aggregator_pad.VideoAggregatorPad.getPreparedFrame or directly use the #GstBuffer from gstvideo.video_aggregator_pad.VideoAggregatorPad.getCurrentBuffer if it needs to map the buffer in a special way. The result of the aggregation should land in @outbuffer.
Lets subclasses aggregate frames that are ready. Subclasses should iterate the GstElement.sinkpads and use the already mapped #GstVideoFrame from gstvideo.video_aggregator_pad.VideoAggregatorPad.getPreparedFrame or directly use the #GstBuffer from gstvideo.video_aggregator_pad.VideoAggregatorPad.getCurrentBuffer if it needs to map the buffer in a special way. The result of the aggregation should land in @outbuffer.