This is the Australia National Museum's website with a pic of the dress and the shoes, shown in the vid:

http://www.nma.gov.au/collections/highlights/azaria-chamberlains-dress

Interestingly, already in the 1980s, the public speculated that the child might have been sacrificed (see link above):

The fact that the Chamberlains were Seventh-Day Adventists led to bizarre rumours and theories.

For instance, it was said that Adventists believed in sacrificing a child to atone for sin and that Azaria’s name meant ‘sacrifice in the wilderness’.