Can you play 3D video with S-video composite cable?

You can use the component cable to connect the PS 3 to the projector. Keep in mind you also need a 3D glasses. You can use S-video, but the picture quality will not be as good. If the projector is 3D projector it should also have HDMI cable input. Double check you projector if it is a 3D or a 3D ready. Hope this will help you out.

I'm not sure, but I don't think so. I'm pretty sure you need an HD-capable cable. There are only 2 types of those: HDMI and component. If you can't use HDMI, that leaves component (the red, green and blue connectors).

No, ipad 2 would not help 1080p, following formats may be supported via ipad 2 * H.264 video, as much as 720p, 30 frames according to 2nd, considerable Profile point 3.a million with AAC-LC audio as much as a hundred and sixty Kbps, 48kHz, stereo audio in .m4v, .mp4, and .mov report formats; * MPEG-4 video, as much as two.5 Mbps, 640 via 480 pixels, 30 frames according to 2nd, user-friendly Profile with AAC-LC audio as much as a hundred and sixty Kbps, 48kHz, stereo audio in .m4v, .mp4, and .mov report formats; * action JPEG (M-JPEG), as much as 35 Mbps, 1280 via 720 pixels, 30 frames according to 2nd, audio in ulaw, PCM stereo audio in .avi report format you are able to convert your video via potential of kit like 4Videosoft iPod supervisor to 720p. additionally you are able to stick to this seek result for extra detials in case you like or merely loose acquire & try it your self.(: