Significant Other wants "true" HDTV quality recording

[bcjenkins]

Originally Posted by wtsitmn

Since I'm no engineer, can someone tell me why I can't get the highest resolution (1080i 1920x1080) in 60Hz, only 30Hz? And would this have any effect on the image?

How do I reduce the overscan so I can see the whole picture without my having to change the resolution?

1080i is 30hz, 1080p is 60hz.

Also, have you tried adjusting your overscan settings within Sage?

[salsbst]

You can, but you really want to keep HD at 100% H/V or the video card will have to start scaling the video which will degrade the picture, however slightly. This scaling may well be the source of the 5-10% difference.

are you saying that if you get the ouptput to exactly 1080i then the video is never deinterlaced by the PC?

[salsbst]

It's actually a lot more complicated than that, and that description really doesn't clarify the issue.

1080i does have more vertical resolution than 720p. Things get confused because that resolution is spread over two fields. Now most content on TV is actually film sourced, what that means is that properly deinterlaced (inverse telecined, which the high-end Geforce 7's can do) you've got a full 1080p picture out of the original 1080i source. Further, there should be no degridation going from 1080i30->1080p24->1080i30->1080p60 since telecine/inverse telecine is a lossless operation, if done correctly.

Further, well deinterlaced 1080i video should have more spacial resolution than 720p, though 720p would have more temporal resolution.

I wasn't aware of this. Thanks.

[wtsitmn]

Originally Posted by bcjenkins

1080i is 30hz, 1080p is 60hz.

Also, have you tried adjusting your overscan settings within Sage?

Thanks for clearing that up for me.

As far as the overscan goes, I want to stay at 1080i so no scaling takes place. It should be a simple adjustment to the geometry settings of the TV itself. But I just got off the phone with Sony, and they said there are no internal adjustments whatsoever--and that even having a TV service guy come over wouldn't help either, because there is nothing to adjust. I find this very hard to believe myself, but the lady at Sony insisted she was correct.

[stanger89]

Originally Posted by salsbst

are you saying that if you get the ouptput to exactly 1080i then the video is never deinterlaced by the PC?

No but you can avoid scaling (unlike with 480i and TV-outs). And like I said above, if you've got a film source, it can be (theoretically at least) "deinterlaced losslessly" so that there's no degridation.

[bcjenkins]

Originally Posted by wtsitmn

Thanks for clearing that up for me.

As far as the overscan goes, I want to stay at 1080i so no scaling takes place. It should be a simple adjustment to the geometry settings of the TV itself. But I just got off the phone with Sony, and they said there are no internal adjustments whatsoever--and that even having a TV service guy come over wouldn't help either, because there is nothing to adjust. I find this very hard to believe myself, but the lady at Sony insisted she was correct.

To correct overscan try:

Main Menu Sage --> Setup --> Detailed Setup --> Multimedia --> Overscan Settings

It won't fix the overscan of the PC in general, but it will fix the viewing window of Sage.

HIH

B

[stanger89]

Originally Posted by bcjenkins

Main Menu Sage --> Setup --> Detailed Setup --> Multimedia --> Overscan Settings

To clarify, that will adjust the size of the UI, but doesn't affect the size of the video. To do that, you have to use the Aspect Ratio zoom settings.

[wtsitmn]

Originally Posted by stanger89

To clarify, that will adjust the size of the UI, but doesn't affect the size of the video. To do that, you have to use the Aspect Ratio zoom settings.

Perfect! I want to reduce the UI so I can read everything, but I don't want it to affect the video. That's the way live video looks using the TV's built-in tuner anyway!

Thanks!

[sajohns4]

I got the fusion hd 5rt as well...my IQ is awesome. I'm using a 7600GT to drive it with the purevideo decoders.

Anyway...I had a quick question and this looked like a good thread to post it in. I know that theres no compression or anything taht sage does to HD streams. But is there anyway I can output the video to a ts stream instead of mpeg? Beyond Tv does that by default which is nice. I was surprised I didn't see any settings in sage that let you do that with all the options there are.

[stanger89]

Just curious, why do you care?

I think this is what you're looking for (though I think it might still use a .mpg extension):
http://forums.sagetv.com/forums/show...77&postcount=4

[sajohns4]

just wanted to run mpeg2repair on it and look at the data errors. wanted to see how much cleaner my new computer could capture the signal and save it vs my old.

[pgitta]

The HD card does not use any of the Sage settings for quality if you're using an HD tuner

...and why i ask again...does sageTV, during setup, if a known HD card is selected during source setup, not OMIT the quality menu to avoid unnecessary confusion!

It's not that hard to do folks. You know..."IF...THEN...

jeez.

[JasonJoel]

I agree it is confusing the way it is.

But is it a big deal, NO.

Should it get changed eventually, YES.

Should anyone be getting worked up about it, NO.


Jason

[Opus4]

Originally Posted by pgitta

...and why i ask again...does sageTV, during setup, if a known HD card is selected during source setup, not OMIT the quality menu to avoid unnecessary confusion!

...

Originally Posted by Opus4

That would have been done already, but there are behind the scenes reasons why it isn't done that way yet. Maybe in the future.

[paulbeers]

Awwww come on Opus4, leave your message. It was a great response!

[Opus4]

Nah... my point is really that it is known & it was already pointed out that when/if the STV can reliably make the distinction, the UI will implement it.

- Andy