R
Rye
Hello,
I tried to create a custom "Contrast" effect to increase
contrast of a clip, without success. I used the following
XML cloned and modified from the Sepia Tone effect
described in http://msdn.microsoft.com/library/default.asp?
url=/library/en-us/dnwmt/html/moviemakersfx.asp?_r=1 :
<EffectDLL guid="{B4DC8DD9-2CC1-4081-9B2B-20D7030234EF}">
<Effect name="Contrast" iconid="25" comment="Contrast">
<Param name="InternalName" value="Standard" />
<Param name="contrast" value="2.0" />
</Effect>
</EffectDLL>
The icon appeared in the effects collection when I opened
up MM2 indicating that the XML was properly formed. But,
the effect seem to have no, effect. I tried various
values for "contrast" from 1.1 to 1000.0 and the clip
appeared the same as without. I also had 2 occurrences of
the brightness effect, which is included with MM2, on the
clip.
I don't understand the description of the contrast
parameter "Contrast adjustment shifts the range of each
color channel around a midpoint. These values should be
greater than or equal to zero, and are usually around
1.0." since the range of this parameter is specified as
0.0 to infinity how can there be a midpoint? i.e. how can
1.0 be a midpoint? I suspect my problem lies in my
interpretation of this... any thoughts or suggestions are
appreciated.
Thanks,
Rye
I tried to create a custom "Contrast" effect to increase
contrast of a clip, without success. I used the following
XML cloned and modified from the Sepia Tone effect
described in http://msdn.microsoft.com/library/default.asp?
url=/library/en-us/dnwmt/html/moviemakersfx.asp?_r=1 :
<EffectDLL guid="{B4DC8DD9-2CC1-4081-9B2B-20D7030234EF}">
<Effect name="Contrast" iconid="25" comment="Contrast">
<Param name="InternalName" value="Standard" />
<Param name="contrast" value="2.0" />
</Effect>
</EffectDLL>
The icon appeared in the effects collection when I opened
up MM2 indicating that the XML was properly formed. But,
the effect seem to have no, effect. I tried various
values for "contrast" from 1.1 to 1000.0 and the clip
appeared the same as without. I also had 2 occurrences of
the brightness effect, which is included with MM2, on the
clip.
I don't understand the description of the contrast
parameter "Contrast adjustment shifts the range of each
color channel around a midpoint. These values should be
greater than or equal to zero, and are usually around
1.0." since the range of this parameter is specified as
0.0 to infinity how can there be a midpoint? i.e. how can
1.0 be a midpoint? I suspect my problem lies in my
interpretation of this... any thoughts or suggestions are
appreciated.
Thanks,
Rye