A video generation method and apparatus, and a promotional video generation method and apparatus are disclosed. The video generation method includes: obtaining a plurality of original files, each of the plurality of original files includes at least one subject matter; extracting multiple subject matters and labeling information corresponding to the multiple subject matters from the plurality of original files; establishing a display structure corresponding to the multiple subject matters based on the labeling information; and combining the multiple subject matters using the display structure to generate a target video. The present disclosure solves the technical problems of difficulties in automatic reconstruction and generation of video data from a product detail page in existing technologies.