- Unset stream ids if a collection does not contain them - Automatically select a default stream of a type if the stream type is enabled but no stream is selected yet when receiving the stream collection - Warn if there's a collection update via streams-selected and if there are unexpected streams being selected, or actually selected streams not being found - Improve debug output a bit Among other things this also makes sure that we don't forget a selected stream id when disabling a track so that when enabling it again later the same one can be enabled again. See https://gitlab.freedesktop.org/gstreamer/gstreamer/-/issues/4344 Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/9081>