The ID passed is malformed
The formatted files was malformed
The frame number is invalid
The operation would break one of the overlap conditions for the GES.Timeline. (Since: 1.18)
The operation would lead to a negative #GES_TIMELINE_ELEMENT_LAYER_PRIORITY. (Since: 1.18)
The operation would lead to a negative time. E.g. for the GES.TimelineElement.start GES.TimelineElement.duration or GES.TimelineElement.in_point. (Since: 1.18)
Some GES.TimelineElement does not have a large enough GES.TimelineElement.max_duration to cover the desired operation. (Since: 1.18)
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