  The Digital Forgeries though not visibly identifiable to human perception it
may alter or meddle with underlying natural statistics of digital content.
Tampering involves fiddling with video content in order to cause damage or make
unauthorized alteration/modification. Tampering detection in video is
cumbersome compared to image when considering the properties of the video.
Tampering impacts need to be studied and the applied technique/method is used
to establish the factual information for legal course in judiciary. In this
paper we give an overview of the prior literature and challenges involved in
video forgery detection where passive approach is found.
