On Sat, 29 Oct 2005, Hans Verkuil wrote:
On Saturday 29 October 2005 18:14, Kevin Atkinson wrote:
I have several issues with the Dynamic Noise Reduction (DNR) filter.
Using version 0.4.0
2) It seams that dnr_spatial only has an effect when capturing at 720x480.
When I set to to anything lower (such as 480x480) this setting has no
effect. I can tell be setting it to 31 so that there is horrible ghosting
artifacts when capturing at 720x480 but not at ANY other horizontal
resolution. I have a PVR-350. If you need more specific info please let
me know, preferably with an explanation of how to get it.
This may be related to the fact the dnr_temporal is forced to 0 by the driver
if the resolution is anything other than 720x480 (or 720x576 for PAL). I'm
not sure what the effect is of spatial DNR if the temporal DNR is disabled,
but my guess is that it is not easy to detect (if it works at all)
Oops. I meant dnr_temporal. So the driver forces it to 0. Is there a
reason for this. Is it due to a hardware limitation, or something else?
BTW: dnr_spatial still seams to work.
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