On-demand digital communications on internet/cloud has been predominantly increasing recently. Due to the increase in the communication levels so did the security for the digital communications (called as multimedia Security) came into the system. Most Reliable and Secure communication is needed for most of the real time applications like Video conferencing, Medical Image Systems and Entertainment Services. The existing cryptographic techniques that we are currently using for the Data security will not be appropriate for the digital multimedia communication. Hence here comes an urgency to develop some new security protocols for our most rapidly developing Multimedia or Digital communications and to provide security and privacy for multimedia data. This paper provides a light weight mechanism for securing video file on-demand over Cloud.