bionic (1) zapping_setup_fb.1.gz

NAME

       zapping_setup_fb - prepares V4L/V4L2 driver for overlay

SYNOPSIS

       zapping_setup_fb [-?, -h, --help, --usage] [-b, --bpp NUMBER] [-c, --child] [-d, --device FILENAME]
                        [-D, --display NAME] [-f, --fd] [-q, --quiet] [-S, --screen SCREEN NUMBER]
                        [-v, --verbose] [-V, --version]

DESCRIPTION

       zapping_setup_fb is a small program to prepare Video For Linux (V4L) or Video For Linux Two (V4L2) video
       capture drivers for video overlay. It must be executed by pam(8) with root privileges, or owned by root
       with the set-user-ID bit set (see chmod(1)). This manual page refers to zapping_setup_fb version 0.13.

BACKGROUND

       To enable video overlay V4L and V4L2 drivers need to know the screen memory address. For security reasons
       only the system administrator can program this address.  zapping(1) delegates the task to this helper
       application.

OPTIONS

       -?, -h, --help, --usage
           Prints usage information on stdout, then terminates the program.

       -b, --bpp NUMBER
           Color depth hint, the number of bits per pixel on the display in question, either 24 or 32. Usually
           zapping_setup_fb can determine this number automatically.

       -c, --child
           Zapping sets this flag when executing zapping_setup_fb as child process to enable the output of
           localized error messages in UTF-8 encoding on stderr.

       -d, --device FILENAME
           The video capture device to open, by default /dev/video0.

       -D, --display NAME
           The X display to use. Defaults to the name defined by the DISPLAY environment variable.

       -f, --fd NUMBER
           Zapping uses this option when executing zapping_setup_fb as child process to access the video capture
           driver by this shared file descriptor instead of opening the device file by name.

       -q, --quiet
           Decrements the verbosity level.

       -S, --screen NUMBER
           The X screen to use (Xinerama), defaults to 0.

       -v, --verbose
           Increments the verbosity level.

       -V, --version
           Prints the version of zapping_setup_fb on stdout, then terminates the program.

BUGS

       None known.

SEE ALSO

       zapping(1), zapping_remote(1), pam(8)

AUTHORS

       Zapping and zapping_setup_fb were written by Iñaki García Etxebarria, Michael H. Schimek
       (mschimek@users.sourceforge.net) and many contributors.

       This manual page was written by Michael H. Schimek based on work by Christian Marillat.

[FIXME: source]                                    01/02/2018                                ZAPPING_SETUP_FB(1)