NAME
nvtv — GUI to control TV output hardware settings
DESCRIPTION
nvtv is a small utility to control the output modes of TV-OUT encoders on many Nvidia-based video cards, as well as on the Voodoo3 video card. Use this with care, you may damage your hardware with a wrong set of options! You can find more detailed descritiptions of each option in the file /usr/share/doc/nvtv/USAGE.gz .
OPTIONS
-h --help
Print help message
--display hst:#
X server to contact
-m --tv-off
TV off, switch to monitor
-t --tv-on
TV on
-b --tv-bars
Color bars
-p --print
Calculate and print register values
-F --fetch
Fetch current mode (use only for printing)
-l --list
List available modes on stdout. Must be combined with -T if hardware is not accessible. Can be combined with -S. Fields are separated by tabs, and contain TV system, resolution, size, overscan compenstation percentage, and aspect in that order.
-r --resolution x,y
Select resolution (screen size in pixels)
-o --overscan x,y
Select overscan compensation percentage (as float)
-s --size #
Select size (for predefined modes)
-S --system
NTSC,NTSC-J,PAL,PAL-60,PAL-NC,PAL-M,PAL-M60,PAL-X,SECAM
Select the TV system. PAL-X is a pseudo-PAL system with slightly different subcarrier frequencies.
-C --connector
AUTO, COMPOSITE, SVIDEO, BOTH, CONVERT
Select the video connecter. CONVERT compensates for cheap SVideo to composite converter cables that don’t merge both lines. FBAS and SVHS are still recognized for compatibility reasons.
-T --chip <encoder type> or <bus>:<addr>
Select the encoder chip by I2C bus and address, or by type (BROOKTREE, CONEXANT, NVIDIA, CHRONTEL1,C HRONTEL2, PHILIPS1, PHILIPS2). CHRONTEL and PHILIPS default to CHRONTEL1 and PHILIPS1.
-A --card-addr <bus>:<slot>.<func>
Graphics card pci address (hexadecimal), as given by lspci.
-W --win-id id
Select window by numerical id
-w --win-name name
Select window by name
-c --center
Center selected window
-X --switch-mode
Switch X mode
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-1 |
Use first head |
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-2 |
Use second head (if available) |
-q --query
Query status of display (monitor, TV, flatpanel)
-P --probe
Probe and print system information
-N --nvdev
Enable usage of /dev/nv* devices
-g --gui
Always use gui
-n --no-root
(only for debugging)
-d --debug
(only for debugging)
--set name:val
Specify the setting name with value val (see below).
SETTINGS
A complete list of all available settings can be obtained with the option -h. The values may be adjusted according to the capabilities of the TV encoder chip, and not all encoders support all settings. Also, equal values may have different effects for different encoder chips.
Settings
include
Contrast
from -100 (percent) to 100 (percent).
Saturation
from -100 (percent) to 100 (percent).
Brightness#
from -50 (percent) to 50 (percent). This setting and the two following settings change the TV signal directly and should be used carefully. Extreme values may degrade the signal up to the point where it cannot be properly displayed anymore.
Contrast#
from -50 (percent) to 50 (percent).
Saturation#
from -50 (percent) to 50 (percent).
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Phase |
from -60 (degrees) to 60 (degrees). |
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Hue |
from -60 (degrees) to 60 (degrees). |
Flicker
Flicker filter, from 0 (percent) to 100 (percent).
AdaptFlicker
Adaptive flicker filter, from 0 (percent) to 100 (percent).
LumaBandwidth
Bandwidth filter for the luminance channel, from 0 (percent) to 100 (percent). Larger bandwidth gives more horizontal detail, but is also more sensitive to noise.
ChromaBandwidth
Bandwidth filter for the chrominance channel, from 0 (percent) to 100 (percent).
Sharpness
Sharpness (or text enhancement) filter, from 0 (percent) to 100 (percent).
CrossColor
Cross color reduction filter, from 0 (percent) to 100 (percent).
Dualview
Flag to dislay the image both on the monitor and the TV. Not supported for all modes.
Monochrome
Flag to display TV image in monochrome.
Non-Interlaced
Flag to display TV image in non-interlaced mode. Reduces vertical detail, but decreases flicker.
Macrovision
Flag to enable macrovision.
FreeCarrier
Flag to let the color carrier generator run free.
Colorfix
Flag to fix the color format for Philips encoder chips.
AdjustCursor
Flag to adjust cursor when in shared view dualhead mode.
ViewportCursor (flag)
Flag to adjust the TV viewport by cursor when in shared view dualhead mode.
ViewportMonitor (flag)
Flag to adjust the TV viewport by the monitor viewport when in shared view dualhead mode.
SEE ALSO
The full documentation for nvtv is located in /usr/share/doc/nvtv/ directory.
AUTHORS
Dirk Thierbach
dthierbach [AT] gmx.de
Eduard Bloch,
for the the Debian system.
blade [AT] debian.org
Permission is granted to copy, distribute and/or modify this document under the terms of the BSD License.