On Fri, Mar 04, 2005 at 03:54:56PM -0600, Neil wrote:Brad Templeton writes:
It's totally different from interlace artifacts. Here is an example of how I am understanding on what you meant by interlaced artifacts - http://neuron2.net/LVG/inthead.jpg Please correct me if I am wrong.
Yes, those are interlace artifacts. These only occur on moving objects,
however, not on stationary ones. Smart deinterlacers know the difference
between moving objects and stationary ones, and deinterlace differently.
If your TV is native 720p, like many Mitsubishis, the main reason to run
1080i video at 1080i is that the TV probaly has a high quality hardware
deinterlacer in it you would then take advantage of. It is carefully
tuned to reduce 1080i to your native resolution.
If your software will do it better than the TV, better to run at 720p and
have myth do it. But all myth offers are things like linear blend (which
blurs moving objects a lot) and bob (which works well with some artifacts
and some shimmer on certain things.)
If so, then, it's different. I only see mine in just 1 line but random Y coordinates. It only happens on very fast moving objects. Here is an example. Like in the program American Idol, I don't know if you have that program. During a presentation of a performer, behind her is a large flat
Unfortunately, we do have it, but I don't record it.
But American Idol is on Fox, and Fox transmits at 720p, not 1080i.
You definitely should not be taking a 720p signal and running it to your
TV at 1080i, especially if your TV is not native 1080 lines. If you
have a native 720 line TV like my Mitsubishi, avoid this like the plague.
Use RANDR.
Overscan? I guess, overscan only has something to do with picture being larger than my hdtv. Fortunately, mythfrontend comes with X&Y offsets, size that we can tweak. And with that, I am able to size my watching to almost 99% of my hdtv screen.The problem I see with overscan is that I don't know what happens when you send a 1080i signal in that is not being downscaled at the ratio the TV is tuned for on other 1080i signals it gets, like from the tuner.
My mitsubishi 48313, based from the manual, only supports 480i, 480p and 1080i, no 720p. Here is another one, I'm also recording other programs which is only at 480. I do see those tearing too in fast moving objects. And btw, about twinview, it is true that it degrades performance since it doesn't use overlay on multiple screens, just the first one. It uses blitted but I don't know what it is. It might be software rendering.
here it is, http://www.restricted.dyndns.org/README.txt
You can find it in:
FREQUENTLY ASKED TWINVIEW QUESTIONS:
Here is an excerpt:
Q: Do video overlays work across both display devices?
A: Hardware video overlays only work on the first display device.
The current solution is that blitted video is used instead on TwinView.
Well, the guys at nvidia channel told me that it might be a real nvidia driver issue. I just have to wait then....
But, I'm doing more investigations. I'm gonna try EDID enabled again and see if I can get it to work at 1080i.
I'll let you know...Btw, your info is very helpful.
Thanks,
Neil _______________________________________________ mythtv-users mailing list [email protected] http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users
