Finds the first #GstReferenceTimestampMeta on buffer that conforms to reference. Conformance is tested by checking if the meta's reference is a subset of reference.
Buffers can contain multiple #GstReferenceTimestampMeta metadata items.
a reference #GstCaps
the #GstReferenceTimestampMeta or null when there is no such metadata on buffer.
Finds the first #GstReferenceTimestampMeta on buffer that conforms to reference. Conformance is tested by checking if the meta's reference is a subset of reference.
Buffers can contain multiple #GstReferenceTimestampMeta metadata items.