Gst.Pad.prototype.proxy_query_caps

function proxy_query_caps(query:Gst.Query):Boolean {
    // Gjs wrapper for gst_pad_proxy_query_caps()
}

Calls Gst.query_caps for all internally linked pads fof pad and returns the intersection of the results.

This function is useful as a default caps query function for an element that can handle any stream format, but requires all its pads to have the same caps. Two such elements are tee and adder.