![]() |
|
||||||
|
|
|
|
|
||||
|
|
|
||||||
|
|
|
|
|
||||
|
|
![]() |
|
|||||
|
|
Oftentimes, the first problem encountered with video evidence is multiplexing. A multiplexed VHS tape will look like any other VHS tape, and will load right up in a standard VCR. Unfortunately, standard VCRs cannot properly play a multiplexed signal, and what you'll get is a rapid sequence of jumbled images that looks like purest gibberish. The same applies to digitally multiplexed signals. Quite often, multiplexed recordings are done in such a way that they can only be properly played back upon the original recording gear, or identical gear. Even if you have access to such gear, the problem of getting the evidence into useable form, while maintaining admissibility, remains. We can take virtually any multiplexed signal and separate it into its individual video streams, while preserving the original evidence and maintaining a strict chain of custody.
![]() |
|
|
||||
|
|
|
||||||
|
|
|
||||||
|
![]() |
|
||||||
|
|
|
||||||
|
|
|
||||||
![]() |
|
||||||
|
|
|
||||||
|
FACT:
Every time a videotape is played, the quality degrades. Many surveillance
systems record in poor quality to begin with, and since the recording often
takes place on a tape that is used over and over, the problem is compounded.
Pausing and rewinding a certain segment is even more brutal on the tape, and the segment that receives this treatment is virtually always the most important part of the tape from an evidentiary perspective. Bottom line? It's easy for critical video evidence to be rendered unuseable after only a few playings. SOLUTION: Don't play an evidence videotape for viewing purposes. Its only playing should be the process of digitizing it into a computer for viewing and analysis. ![]() |
|
||||||
|
|
|
||||||
|
|
|
||||||
|
Multiplexing: The process of simultaneously recording signals from
multiple cameras onto a single tape or into a single computer file.
Time-Lapse: Recording fewer than the standard 30 frames of video per second, in order to conserve space on the media. ![]() |
|
||||||
|
|
|
||||||
|
|
|
||||||
|
|
|
||||||
|
Copyright 2004, Evidence Technology, LLC, All Rights Reserved |
|
||||||
|
|
|
||||||