The select-streams event requests the specified streams to be activated.
The list of streams corresponds to the "Stream ID" of each stream to be
activated. Those ID can be obtained via the #GstStream objects present
in #GST_EVENT_STREAM_START, #GST_EVENT_STREAM_COLLECTION or
#GST_MESSAGE_STREAM_COLLECTION.
Allocate a new select-streams event.
The select-streams event requests the specified streams to be activated.
The list of streams corresponds to the "Stream ID" of each stream to be activated. Those ID can be obtained via the #GstStream objects present in #GST_EVENT_STREAM_START, #GST_EVENT_STREAM_COLLECTION or #GST_MESSAGE_STREAM_COLLECTION.
Note: The list of streams can not be empty.