A method and apparatus for transmitting and receiving a video stream

A method and apparatus for transmitting and receiving a video stream. The transmission method comprising: receiving information and one or more auxiliary video stream, they are distributed as one or more pieces of data path; transmitting data to the receiving path means; receives a result value, a result value indicating a process for or a plurality of video streams in the video processing unit works normally. Said receiving method comprising: receiving information and one or more auxiliary data path of the one or more video streams; the channel data into one or more video streams; selected video processing unit based on the auxiliary information, wherein the one or more a video processing unit for processing a video stream; generating a video processing unit for selecting the result value, a result value indicating the video processing unit works normally; and transmitting the result value to the transmitting apparatus.