Config file documentation

wifi:
  ssid: MyNetwork           # SSID of the network
  password: "MyPassword"    # Password for the network
  hostname: ps1digital      # Hostname, if your computer supports MDNS,
                            #  the device can be reached via <hostname>.local
firmware:
  server: firmware.i74.de   # Should be default, only for custom firmware servers
  path: /ps1                # Should be default, only for custom firmware servers
  version: master           # change to develop, if you want releases from the
                            #  development branch
httpUser:
  name: ps1digital          # Login username for web console
  password: ""              # Login password for web console, if empty the password
                            #  will be generated on each power cycle or full reset
  protected: "off"          # If "on", the password will not be shown in OSD

staticIp:                   # Use this, if you're wifi network does not use DHCP
  address: ""
  gateway: ""
  netmask: ""
  dnsserver: ""

scanlines:
  active: false             # Scanline on (true) or off (false)
  odd: false                # Odd (true) or Even (false) scanlines
  thick: false              # Thick (true) or thin (false) scanlines
  intensity: 175            # Scanline intensity (0-255)
  dopre: true               # !dopre && !thick -> very thin

osd:
  font: default             # Name of the OSD font to use
  settingsMode: 0           # 0: global, 1: per game

videoconfig:
  resolution: 1080p         # Valid values: VGA, 480p, 960p or 1080p
  colorspace: 0             # 0: auto, 1: full, 2: limited RGB colorspace
  deinterlacer: "on"        # "off": Passthru mode
  deinterlacerMode: 0       # 0: weave, 1: bob
  colorExpansionMode: 7     # 0: RGB555, 1: RGB565, 3: off, 7: auto
  gammaMode: "off"          # Name of the gamma map to use (-0.4 to +0.4 and off are always installed)
  forceMode: 0              # 0: off, 1: force 240p, 2: force 480i, 3: vfr-hdmi, 4: overclock
  autoResetAlignment: true  # Enable (true) or disable (false) automatic alignment reset
  enableHq2x: false         # Enable (true) or disable (false) HQ2X filter
  hq2xStage1: false         # HQ2X filter in stage 1 (true) or stage 2 (false)
  noAdvIntOnClkChg: false   # set to true to not power down tmds lines during clock reconfiguration

captureAdjust:
  manualx: false            # Set to (true) to disable horizontal auto-adjust
  manualy: false            # Set to (true) to disable vertical auto-adjust
  xVal: 0                   # horizontal capture adjust in manual mode
  yVal: 0                   # vertical capture adjust in manual mode
  borderX: 0                # horizontal white border in pixels
  borderY: 0                # vertical white border in lines
  border2X: 0               # horizontal black border in pixels
  border2Y: 0               # vertical black border in lines

misc:
  extraPins: 0              # 0: PsNee, 1: lid/door control
  doorHandler:
    mode: 0                 # 0: follow lid switch, 2: force closed
  psneeInjectType: 0        # 0: inject all regions, 1: inject only SCEE,
                            #  2: inject only SCEA, 3: inject only SCEI
  endlessMenu: false        # menu up/down wrap-around enable
  cecDisable: false         # true: disable CEC
  sendData: false           # true: send resolution information

consoleServer:
  enabled: false            # true: enable serial port server on startup
  port: 7713                # serial port server port
  baudrate: 115200          # serial port baud rate
  wordBits: 8               # serial port word/data bits (5,6,7,8 are supported)
  parity: "N"               # serial port parity ("N", "O", "E" are supported)
  stopBits: "1"             # serial port stop bits ("1", "2" and "1.5" are supported)

For details on videoconfig also check this document