Digital Video Manipulation Detection Technique Based on Compression
  Algorithms
Edgar Gonzalez Fernandez Ana Lucila Sandoval Orozco Luis Javier Garcia Villalba
Digital images and videos play a very important role in everyday life.
Nowadays, people have access the affordable mobile devices equipped with
advanced integrated cameras and powerful image processing applications.
Technological development facilitates not only the generation of multimedia
content, but also the intentional modification of it, either with recreational
or malicious purposes. This is where forensic techniques to detect manipulation
of images and videos become essential. This paper proposes a forensic technique
by analysing compression algorithms used by the H.264 coding. The presence of
recompression uses information of macroblocks, a characteristic of the
H.264-MPEG4 standard, and motion vectors. A Vector Support Machine is used to
create the model that allows to accurately detect if a video has been
recompressed.