Complex sentence: The public donation programme initially highlighted the need to preserve and digitise 200,000 Betacam video tapes from the 1980s which were predominantly from the TVNZ Archive collection.
Split into simpler sentences: The public donation programme initially highlighted the need to preserve and digitise 200,000 Betacam video tapes from the 1980s. The tapes are predominantly from the TVNZ Archive collection.