Hmm. looking at the guide, i found this:
Some people have run into issues with their cards generating a slight
inverse ghosted image off to the right of the main picture, myself
included. The recommended fix, which appears to be working for me, is
to set the DNR mode to 0 (mine was initially set to 3), like this:
# /usr/bin/ivtvctl -c dnr_mode=0
Also make sure that the values for DNR temporal and spatial filters are
set to 0, for best results:
# /usr/bin/ivtvctl -c dnr_temporal=0
# /usr/bin/ivtvctl -c dnr_spatial=0 However, it seems to be pvr350
output related. I don't have a pvr 350 in here. I am using a 350 for
recording in a different backend, but I see this effect on low-def
stuff recorded both with the pvr, and the low-def DTV signal I get from
my CBS affiliate. Quoting Todd Bailey <[EMAIL PROTECTED]>:
I remember reading something about this in Wilson's install guide.
you might want to check and see if various forms of filtering is
turned off.
spatial and dnr come to mind
Quoting Ian Trider <[EMAIL PROTECTED]>:
This is different than the problem that I have with the bob deint. With
that the SD stuff will shimmer. I haven't seen a fix for that one
either. I believe that is also amd64 related.
I don't know about the main problem you describe in your message, but
what you describe here is pretty much inherent in a bob deinterlace --
it takes each field of the original interlaced frame and blows it up
to full size, then plays the two one after another in time.
Because the two interlaced fields are in slightly different spatial
positions (i.e. the first field covers the odd scanlines, second field
covers the even scanlines) the image will wobble/jitter vertically
slightly. (That's why it's called 'bob' <g>)
There are strategies for reducing this, but I'm don't know if myth
implements them (using PVR-350 for output) -- if it is available for
realtime playback, though, kerneldeint should look nice, but the
motion won't be as 'smooth'.
I'm guessing this isn't really noticable in HD material because the
higher-resolution probably covers up for the bob effect.
Comparing bob on a x86 machine to it on a amd64 machine. There is
definately something wrong with the amd64. Shimmer was a bad word,
it's more like double vision or ghosting. It did not used to look
like this.
Is there a way to take screen shots in myth? I'd love to provide
pictures of these effects.
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