Find 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.
1.14
See Implementation
Find 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.