In the ongoing year, video falsification identification is a significant issue in video criminology. Unapproved changes in video outline causing debasement of genuineness and uprightness of inventiveness. With the progression in innovation, video preparing apparatuses and procedures are accessible for modifying the recordings for falsification. The adjustment or changes in current video is imperative to identify, since this video can be utilized in the validation procedure. Video authentication thus required to be checked. There are various ways by which video can be tempered, for example, frame insertion, deletion, duplication, copy and move, splicing and so on. This article presents forgery detection techniques like inter-frame forgery, intra-frame forgery & compression-based forgery detection that can be used for video tampering detection. Thorough analysis of newly developed techniques, passive video forgery detection is helpful for finding the problems and getting out new opportunities in the area of passive video forgery detection.