What is an anthropological documentary?

As the name suggests, "anthropological documentary" obviously includes two aspects-anthropology and documentary, which are inseparable. But it is neither equal to the traditional written expression of anthropology, nor to the documentaries that people are familiar with every day. In terms of content, anthropological documentaries are anthropological, rational, and academic achievements. In this sense, they are equivalent to anthropological written works but different from general documentaries.