Mood: The mood of the video appears to be melancholic and nostalgic, with a theme of revisiting the past, as suggested by the title 'zamaana lage rewind'. The overall tone seems to be introspective and emotive, hinting at a story that explores the complexities of human relationships and possibly lost love.

Environment: The setting of the video seems to be a metropolitan city, likely Mumbai, given the presence of a metro and the urban landscape in the background. The cityscape, with its tall buildings and hazy sky, provides a contrasting backdrop to the characters' emotional journeys, which may be unfolding on the metro escalator.