This ioctl is deprecated. Synopsis

int ioctl(fd, VIDEO_SET_BLANK, boolean mode) Arguments

int fd File descriptor returned by a previous call to open().
int request Equals VIDEO_SET_BLANK for this command.
boolean mode TRUE: Blank screen when stop.
  FALSE: Show last decoded frame. Description

This ioctl call asks the Video Device to blank out the picture. Return Value

On success 0 is returned, on error -1 and the errno variable is set appropriately. The generic error codes are described at the Generic Error Codes chapter.