No, the Sky HD box also has component, s-video and SCART outputs (not inputs). HD video is available over the HDMI and component outputs, but the s-video and SCART (RGB or composite) outputs are not high definition. Not quite sure what you mean about BBC1/2 and ITV, do you realise that there is a limited range of HD channels at present? The channels you name are only normal standard definiton channels. Have you looked through the Sky HD website (www.sky.com/hd) ?
it's time consuming but try all combinations for sd and hd at the various resolutions! honest it can make a difference, everyone assumes hdmi is the best connections but it might not be depending on your telly
i've founf so far that sd channels look better through RGB scart than component and hdmi!! upscaling or no upscaling and with or without de-interlacing (576)
I have a Denon 2307 amp (2 HDMI inputs) with HD-DVD and PS3 connected via HDMI. If I upgrade to Sky HD is there any disadvantage connecting via component? Are any of the functions limited (I'm thinking HDCP type issues with HD movies) or do you lose some worthwhile functionality with auto aspect switching etc?
not sure about the aspect ratio thing but from my experience so far hdmi and component all come through at 16:9 and i have to manually switch to 4:3 if desired (might be my tv though!)
with regards to component other than the hdcp issues which i think will only kick in later on, most people claim no degradation in picture performance although you won't know till you try it for yourself. bear in mind, hdmi maintains the 'digital' path whereas as component to the display will have to got through a couple of conversions digital-analogue-digital but again according to most folks you can't tell the difference
yep Samsung seem to ignore the aspect ratio flag being sent over HDMI even with the SkyHD box set to auto (720p and 1080i settings assume that you want all content to be 16:9 format so 4:3 channels are stretched to fill the frame). However Samsung do at least give us the option of manually changing it unlike a few other mfr's who always show it 16:9 format regardless and grey out the aspect ratio option.
As to HDCP - that's already in effect over HDMI on all bar the welcome channel 998. If the SkyHD box is connected to a non HDCP compliant TV it will show a message saying the TV is not HDCP enabled. What they haven't implemented yet is the channel content providers right to downgrade the component output. I very much doubt they will ever get around to doing this on the current box as Sky have no interest in limiting their subscribers viewing and are big/ugly enough to broker deals with the content providers to show them unrestricted. More's likely that they will bring out the next gen box without the component outputs and therefore implement it that way. Any existing SkyHD box owners will continue being able to view them untill such time as their box gets swapped under warranty (Sky are at liberty to provide a new box as a replacement so could be a component less one) or the owner buys a new one. Hence gradual phase out.