720 X 486 Industry Standard ITU-R
601 Image Output
When digitizing video, it's important
to digitize the full 720 x 486 pixel matrix of the NTSC signal
(a total of 349,920 pixels). This captures all of the data
from the original tape. dTective digitizes
video at the industry standard 720 x 486 pixel matrix, capturing
the full NTSC resolution ensuring analysis of every pixel.
Many capture devices on the market
today are only capable of recording a 640 X 480 pixel matrix;
These devices capture 42,720 fewer pixels from each NTSC frame
than a 720 x 486 capture card.
Viewing 720 x 486 video (349,920
Pixels) vs. Viewing Underscanned Video on a Television Monitor
A typical television contains an
underscan area that crops the top, bottom and sides of the
image. This cropping conceals approximately 10% of the image,
often hiding important clues from the investigator. Avid Xpress
displays every pixel of the video, including the underscan
area.
Image below shown as
seen on typical TV monitor:
Image below shown as
seen with underscan areas viewable:

