In the field of documentary, the question of “authenticity” has always been the basic proposition that audiovisual communication continues to pursue. In the Internet era, the boundary between non-fiction and fiction of pan-documentary audiovisual content has dissolved, and the paradox of reflecting the real and creating the real has given rise to a new round of authenticity issues. Under the double vision of culture and technology, this paper summarizes the revolution of documentary aesthetics from the 1980s and 1990s in the field of film and television to the field of the Internet, which has lasted for more than forty years, and tries to present the inter-constructive history of documentary culture and contemporary culture in China. The paper explores how people’s understanding, expression, and conception of the authenticity of Internet audiovisual content have changed with the generalization of the term “original ecology” through the evolution of the connotation and practice of the superficial discourse of “original ecology”. This paper argues that under the deep involvement of platforms and capital, concepts such as “original ecology” in audiovisual communication have been alienated in the tug-of-war between multiple parties, and documentary culture has been transformed from pursuing the real to experiencing the “sense of reality”, and the platforms have become the most important players in defining “real” through the use of algorithm, and in the process of the evolution of practice. Through algorithms, platforms have become the structural force that defines “authenticity” and influences the production of content, realizing the domination over the authenticity of visual communication through the creation of landscapes. Based on this, we believe that platforms should be involved in the reconstruction of the boundaries of “authenticity”. It is only by reawakening society’s understanding of the significance of documentary aesthetics that the fundamental purpose of aesthetic restoration and value correction can be achieved.