Hiding Text in Video Using Steganographic Technique - A Review

This paper presents the hiding of text in video using haar wavelet transform in particular frame and BCH codes. Haar wavelet transform is applied to get the low frequency sub-band in an image to hide data. The frequency sub-bands are (LL, LH, HL and HH). BCH codes are used to encrypt the data. The work of various researchers is discussed about video steganography and their techniques for embedding and extraction of data. With the advancement of technology and multimedia information, Videos and digital images are increasing very quickly. Steganography is hiding private or secret data within a carrier in invisible manner. A lot of information can be stored in video files. It contains number of frames played over a period of time. Information can be stored in any or number of frames. Moreover, Attacker or Human eye cannot detect the presence of message in video because video frame is only visible for a fraction of time.