This clip is from the movie Titas Ekti Nadir Naam by Ritwik Ghatak . The movie is based on Jhalo malo people of bengal.
Their speaking bangla is similar to ours and koiborto . From internet i could trace the dialect name to "Brahmanbaria dialect"
Hailakandi, Oct 1 The Hailakandi district administration has begun efforts to secure a formal archaeological survey and conservation plan for ancient rock-cut sculptures discovered at remote Kahampara along the Assam–Mizoram border.
Dr Ganesh Nandi, Associate Professor in the Department of Visual Arts at Assam University, said the sculptures bear visual similarities to archaeological remains at Unakoti and Pilak in Tripura.
"During our visit to the site in 2023, we estimated that the remains could be around 1,500 years old.
Similar archaeological sites at Unakoti and Pilak in Tripura have been dated to around 1,200-1,300 years old, and the remains found at Kahampara are visually similar to those sites," Nandi said.
Local villagers have offered preliminary interpretations of some of the figures. They said one appears to bear features associated with Buddhist imagery, while another is believed to depict Parvati, with artistic characteristics linked to Gupta-Pala traditions.
Source- The Assam Tribune — “Hidden in Hailakandi forests, Kahampara’s rock sculptures spark heritage hunt”