A video processing method includes: acquiring video substreams through at least two channels, to obtain at least two video substreams each having a one-to-one correspondence with one of the at least two channels (S202); extracting video slice numbers from supplemental enhancement information (SEI) frames of the at least two video substreams (S204); determining a missing video slice missed from a target video substream of the at least two video substreams according to the extracted video slice numbers (S206); downloading the missing video slice from a video source corresponding to the target video substream (S208); and playing the downloaded video slice and the at least two video substreams according to a sequence of the video slice numbers (S210).