A DVD player has to complete these tasks:
Read a DVD disc in ISO – UDF version 1.2 format
optionally decrypt the data with either CSS and/or Macrovision
read and obey the DVD's Regional lockout codes and display a warning if the player is not authorised to play the DVD
decode the MPEG-2 video stream with a maximum of 10 Mbit/s (peak) or 8 Mbit/s (continuous)
decode sound in MP2, PCM or AC-3 format and output (with optional AC-3 to stereo downsampling) on stereo connector, optical or electric digital connector
output a video signal, either an analog one (in NTSC, PAL or SECAM format) on the composite, S-Video, SCART, or component video connectors, or a digital one on the DVI or HDMI connectors
