The player of your video has one prime function—to send sound and video to other components. The source of the video you are projecting will likely be a computer, dvd player, or a video game. Video can come from phones to blue ray players these days, so you have many options. The source of your video's (video-out) connects to your projector's (video-in). Your video source also has an audio out that connects to your stereo's (audio-in).
Features to consider:
Video-Out Connections: What connections are available to go out to your projector? Most video players offer multiple connections both in and out. Understand the difference between composite, s-video, and component video signals. Component or
HDMI are the current top-of-the-line cabling options for a high definition video signal, but the other connections can come in handy when needed. We always take advantage of versatility when offered.
Audio-out Connections: Audio is generally carried by RCA cables or newer fiber-optic cabling. Either will provide surround-sound; the difference is whether the signal is carried in analog or digital format.