Constructs a new stream duration query object to query in the given format. Use gst_query_unref() when done with it. A duration query will give the total length of the stream.
Free-function: gst_query_unref()
the #GstFormat for this duration query
a new #GstQuery
Constructs a new stream duration query object to query in the given format. Use gst_query_unref() when done with it. A duration query will give the total length of the stream.
Free-function: gst_query_unref()