Scroll to navigation



ir-keytable - a swiss-knife tool to handle Remote Controllers.


ir-keytable [OPTION]...


ir-keytable is a tool that lists Remote Controller devices, loads rc keymaps, tests events, and adjusts other Remote Controller options.

Rather than loading a rc keymap, it is also possible to set protocol decoders and set rc scancode to keycode mappings directly.

Note: You need to have read permissions on /dev/input for most of the options to work.


-a, --auto-load=CFGFILE
Auto-load keymaps, based on a configuration file. Only works with --sysdev.
-c, --clear
Clears the scancode to keycode mappings.
-D, --delay=DELAY
Sets the delay before repeating a keystroke.
-k, --set-key=SCANKEY
Set scancode to keycode mapping.
-p, --protocol=PROTOCOL
Comma separated list of kernel protocols or BPF protocol to enable. All other protocols are disabled.
-e, --parameter=PARAMETER
Comma separated list of parameters for the BPF protocol.
-P, --period=PERIOD
Sets the period to repeat a keystroke.
-r, --read
Read and show the current scancode to keycode mapping.
-s, --sysdev=SYSDEV
rc device to control, defaults to rc0 if not specified.
-t, --test
test if the rc device is generating events
-v, --verbose
Enables debug messages.
-w, --write=KEYMAP
Reads the protocols and scancode to keycode mapping from the KEYMAP file, and enables those on the rc device.
-?, --help
Prints the help message
Give a short usage message
-V, --version
print the v4l2-utils version

Mandatory or optional arguments to long options are also mandatory or optional for any corresponding short options. Options can be combined together.

The options arguments are:

the rc device as found at /sys/class/rc
a toml keymap file with a list of protocols and scancodes to keycode mappings. The format is described in rc_keymap(5).
a set of scancode1=keycode1,scancode2=keycode2.. value pairs
Comma separated list of kernel protocols to be enabled (case insensitive). Supported kernel protocols are: nec, rc-5, rc-6, jvc, sony, sanyo, rc-5-sz, sharp, mce-kbd, xmp, imon, rc-mm, other, all. It can also be a BPF protocol, e.g. manchester, pulse_distance, pulse_length. If it does not match any of these, it is taken to be the path of BPF decoder to be loaded.
Comma separated list of parameters for the BPF protocol being loaded. They have the format of name=value, where value is an number.
Delay before repeating a keystroke
Period to repeat a keystroke
configuration file that associates a driver/keymap name with a keymap file


On success, it returns 0. Otherwise, it will return the error code.


To list all connected Remote Controller devices:

To clean the keycode mapping and use a newer one:
ir-keytable -c -w /etc/rc_keymaps/nec_terratec_cinergy_xs.toml

To append more codes to the existing table:
ir-keytable -w /etc/rc_keymaps/nec_terratec_cinergy_xs.toml

To read the current scancode to keycode mapping on the second remote controller:
ir-keytable -s rc1 -r

To enable NEC protocol and load a BPF protocol, with a parameter for the BPF protocol:
ir-keytable -p nec,pulse_distance -e pulse_header=9000

If you do not know what protocol a remote uses, it can be helpful to first try with all kernel decoders enabled. The decoded protocol and scancodes will be displayed in the output:
ir-keytable -c -p all -t


Report bugs to Linux Media Mailing List <>


Copyright (c) 2010-2014 by Mauro Carvalho Chehab.

License GPLv2: GNU GPL version 2 <>.
This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law.


The keymap format is described in rc_keymap(5).

To transmit IR or receive raw IR, see ir-ctl(1).

Fri Oct 3 2014 v4l-utils 1.18.1