In order to realize secret transmission of great color video information. This paper presents a new scheme capable ofhiding low levelMPEG2Ⅱcolor video streams intomain levelMPEG2Ⅱcolor video streams. Itmakes fulluse of vision character of our eyes and selects information of intermediate/high frequency as revisable host vector in the DCT domain ofhostvideo streams

which are notsensitive to our eyes. A novel embeddingmethod is proposed in this paper. As many as Lbits of information data can be embedded by changing

atmost

Lbits in the(2L+1)bits cover data

which makes higher dataembedding efficiency and better secrecy. The scheme can be also used for secret transmission of other stream media and great information. The scheme has been simulated in Local areaNetworks and better experimental results have been given.