Can anyone tell me something about audio video forensic ? What are the appropriate softwares for those ?

Dear Mr. Ahmed Fathy, Audio-Video Forensics are very distinct and a software cannot be directly applied. Since Audio and Vidoe are either in Analog OR in Digital formats, An expert Electronics specifically in the field of Digital Signals Processing, Acoustics and Sound Engineering OR related subjects must be brought.Instead of Software alone as a platform, Audio Video Forensics relies on an elaborate lab environment using hardware primarily along side clever combinations with software to enhance quality (In case of evidence for Judicial Systems/ Courts). In Other cases, We can use to verify integrity and to verify that a tape was not altered OR duplicated.I have found very useful information tailored for this purpose at the below URL.http://www.fbi.gov/about-us/lab/forensic-science-communications/fsc/april2003/index.htm/lacey.htm