straight from the Denon Web site: [Link: usa.denon.com]

AVR-3803
...... • 2 Assignable component video inputs (100MHz), with On-Screen Display • Video Conversion of Composite to S-Video and/or to Component, with on-screen display • 7 sets composite and "S" video inputs • ..........

I haven't seen one yet, I hope that it works well.
the 1803 dosen't say anything about it.