Whether to automatically create a transition whenever two #GESSource-s overlap in a track of the timeline. See #GESLayer:auto-transition if you want this to only happen in some layers.
Forward all children messages, even those that would normally be filtered by the bin. This can be interesting when one wants to be notified of the EOS state of individual elements, for example.
The messages are converted to an ELEMENT message with the bin as the
source. The structure of the message is named GstBinForwarded and contains
a field named message that contains the original forwarded #GstMessage.
The parent of the object. Please note, that when changing the 'parent' property, we don't emit #GObject::notify and #GstObject::deep-notify signals due to locking issues. In some cases one can use #GstBin::element-added or #GstBin::element-removed signals on the parent to achieve a similar effect.
The distance (in nanoseconds) at which a #GESTimelineElement being moved within the timeline should snap one of its #GESSource-s with another #GESSource-s edge. See #GESEditMode for which edges can snap during an edit. 0 means no snapping.
If set to %TRUE, the bin will handle asynchronous state changes. This should be used only if the bin subclass is modifying the state of its children on its own.