The 605 has no s-video port, but does have a composite video port.
1) Does the 605 send its video signal through the composite, component, and HDMI ports simultaneously?
2) Is the composite video output on the 605 the same as the s-video output of the 505 -- the "shrunken 16x9" picture I mention above?
1) The 630 does, so I'd assume the 605 does as well.
2) Again, the 630 has it like the 505 did. I'd assume the 605 works the same. BUT, the picture quality is not as good as the s-video.
I have the 505 and now a 630 ... I used the 505 to do exactly what you're doing for a year to a DVD/HDD recorder. I used the S-video out. When I got the 505 I was surpised how much better the picture was over the older SD 401, even on the 480i s-video. Still 480, but the HD made for a much higher quality source signal. By the time I got the 505 last year, my SD channels were looking like fuzzy VHS shows. Too much compression I suspect from the Sat company. My friend on Bell had the same situation. Some shows with lots of strobe lights on stage were almost unwatchable. The HD was fine. But its compressed HD. A blu-ray disk is about 40GB of data. The same film on Satellite would store about 5-7GB. About 1/4 compressed.
Anyway, now I got the 630 , only has component and no S-video. The same process still works, but the picture is degraded a fair bit. I'm going to keep the 505 to do what I used to do unless I can convert the component out into S-video.
The real solution here is for removable external HDD, so that HD can be recorded and stored. But Shaw doesn't have this feature. Bell does. Not sure about Rogers. I'm looking at options and may leave Shaw soon. They seem to be getting behind. Bill is going up, service down.