V.I.O. Stream - Manual (Page 66)

STREAM User Manual
66
Tips and guidelines for getting the most out of your STREAM
Over time you will learn from experience exactly how you want to configure the STREAM settings for the
conditions you shoot in. This section will help get you started and answer some basic questions about how to
use the settings.
Choosing a video format
The STREAM supports several different recording formats which are designated by industry standard labels
such as 1080p30. In this example, ‘1080’ designates 1080 horizontal scan lines in the frame, ‘p’ designates
progressive scanning which means all lines in the frame are captured in each frame, and ‘30’ designates 30
frames per second.
(You may have noticed elsewhere formats such as 1080i. In such a case, ‘i’ designates interlaced scanning in
which the odd numbered scan lines are captured in in one frame and the even numbered lines in the next.
This method uses less bandwidth and less file space, but in some circumstances such as filming rapid motion
the perceived picture may not be as sharp as with progressive scanning. Also the frame rate is commonly left
off the label for consumer video equipment because consumer TV sets automatically adjust to the frame rate
of the incoming signal.)
Format Resolutions
In this illustration, the shape of each box shows the shape (aspect ratio) in which each format is displayed. The
area of each box is proportional to the resolution. The actual physical size of any format is determined by the
device on which it is displayed.
width = 1920 pixels
height = 1080 pixels
~2 megapixels/frame width = 1280 pixels
height = 720 pixels
~0.9 megapixels/frame