In order to reveal how the “perceptual material space” of the “distant disaster” is transformed into the “communal meaning space” of the public through “video texts” in the media field,and to explore the basic mechanism of narrative techniques and their value shift in the process of mediation.This article focuses on the phenomenon of short videos posted by people who have experienced two natural disasters, the Chongqing fires and the Turkey earthquake, which have become “pop-up” in online social media.The short videos of the disaster shot from the first-person perspective of those who experienced the mountain fires communicate with the onlookers across space and time with multi-dimensional information, emotions and values through internally focused narratives, enhancing the perceptibility of the “distant disaster” and seeking social assistance and support in the process of mediated connection and diffusion, and realizing the dynamic negotiation and reflective reconstruction of collective memory identity in the media ritual of commemoration. In this way, it helps to understand the value and significance of the “community of disaster mimesis” jointly constructed with the professional creation of professional media by the independent dissemination of the fragmented empirical texts of the general public’s “autobiographical memory” into the public view.The significance of the “community of disaster mimesis” is also understood.