Abstract: This application discloses a Web-end video playback method and apparatus, and a computer device. The method includes: obtaining to-be-played FLV-format video data; decapsulating the FLV-format video data by using a preset WebAssembly bytecode to obtain effective video data, and storing the effective video data into a preset doubly linked list; encapsulating the effective video data in the doubly linked list using the WebAssembly bytecode to obtain FMP4-format video data; and loading, through media source extensions, the FMP4-format video data to a Web-end video player for playback. This application further provides a computer-readable storage medium. In this application, different video data is decapsulated and encapsulated using the WebAssembly bytecode, and then new-format video data is loaded through media source extensions. This reduces occupation of processing resources in a Web-end video data processing process and improves processing efficiency.