A:Answer If the DVD player has HDMI out, just plug the HDMI cable from it into an HDMI input on the protector. If DVD player uses the composit (yellow for analog video) + red and white output, (for left and right audio) then connect the yrw cable from the DVD player to the included yrw to AV adapter and plug the headphone lookin end into the AV port on the back of the projector. Either way, make sure to change the input on the projector's menue to HDMI or AV, and have both devices powered on.