Video recordings of French and German children that start acquiring German or French as an L2 with varying AOAs, mainly of approx. 3 years. Some families use additional languages, mainly English. The child is addressed in the L2 in the recording sessions, which are of the type interviewer/child interaction. On an average, for each child there is data from two occasions each year during two years. Only transcripts and metadata are available. Orthographic transcription according to project internal conventions.