Hardware Reference
In-Depth Information
Overscan Video
A few options control the overscan support of the composite video output. When overscan
is enabled, a certain number of pixels are skipped at the sides of the screen as configured.
Disable Overscan
The
disable_overscan
option can disable the overscan feature. It is enabled by default:
disable_overscan
Description
0
Overscan enabled (default)
1
Overscan disabled
Overscan Left, Right, Top, and Bottom
These parameters control the number of pixels to skip at the left, right, top, and bottom of
the screen.
Parameter
Pixels to Skip
overscan_left=0
At left
overscan_right=0
At right
overscan_top=0
At top
overscan_bottom=0
At bottom
Frame Buffer Settings
The Linux frame buffer support is configured by a few configuration options described in
this section.
Frame Buffer Width
The default is to define the width of the frame buffer as the display's width minus the
overscan pixels.
framebuffer_width
Description
default
Display width overscan
framebuffer_width=n
Set width to
n
pixels
