Encrypt your video files with embedding decoder and player User neednt install any decoder or player to play your video. you can encrypt various types of video or audio files (e.g. wmv avi asf mpg rm rmvb mp4 flv Vob) into exe files that can only be played when a Playback Password is provided and users can only play the encrypted media files after obtaining the Playback Password provided by you. When a user wants to play an encrypted file the encrypted file will pop up a dialog box to request the user to enter a Playback Password. This dialog box will display the machine ID of the users computer. The user can send hisher own machine ID to you and you can create a Playback Password based on the users machine ID. After that the user can use this Playback Password to play your file on hisher computer. Since the Playback Password is created based on the users machine ID the user will not be able to share the Playback Password with other users. Since the Playback Password is bond to the users computer the user will not be able to re-distribute your files.