Hardware Reference
In-Depth Information
Composite Aspect Ratio
The
sdtv_aspect
parameter configures the composite video aspect ratio.
sdtv_aspect
Description
1
4:3 (default)
2
14:9
3
16:9
Color Burst
By default, color burst is enabled. This permits the generation of color out of the composite
video jack. Setting the video for monochrome may be desirable for a sharper display.
sdtv_disable_colourburst
Description
0
Color burst enabled (default)
1
Color burst disabled (monochrome)
High-Definition Video
This section covers
config.txt
settings that affect HDMI operation.
HDMI Safe Mode
The
hdmi_safe
parameter enables support of automatic HDMI configuration for optimal
compatibility.
hdmi_safe
Description
0
Disabled (default)
1
Enabled
When
hdmi_safe=1
(enabled), the following settings are implied:
hdmi_force_hotplug=1
•
config_hdmi_boost=4
•
hdmi_group=1
•
hdmi_mode=1
•
disable_overscan=0
•
