Hi!
Currently, there is a bug in the region filter which prevents it from
working
in multi track playlists.
For example, when issuing the following command:
melt -profile dv_pal colour:red -track colour:blue -attach region:circle
filter0=brightness:2
You expect to get a blue background with a light blue circle. But
currently, the
region filter behaves exactly like the region transition, meaning that
you will
end with a red background with a light blue circle.
My attached patch fixes that behavior when setting the "filter_only"
property.
It means that doing:
melt -profile dv_pal colour:red -track colour:blue -attach region:circle
filter0=brightness:2 filter_only=1
Will give you the expected light blue circle on blue background.
This can bring some really exciting features to Kdenlive, combined with the
rotoscoping filter. You can for example create an animated mask using the
rotoscoping filter, like my attached spline.mlt
Then, feeding this mask to the region filter, you can apply effects on
the mask
zone only, test it with:
melt -profile dv_pal colour:blue -attach region:spline.mlt
filter0=brightness:2
filter_only=1
I am not sure my patch is the best way to fix the issue, but at least it
seems
to work.
Ok, now I should probably concentrate on the Kdenlive release...
regards
jb
________________________________________________________________
Region filter patch:
diff --git a/src/modules/core/transition_region.c
b/src/modules/core/transition_region.c
index afab7f6..9672162 100644
--- a/src/modules/core/transition_region.c
+++ b/src/modules/core/transition_region.c
@@ -292,6 +292,13 @@ static int transition_get_image( mlt_frame frame,
uint8_t
**image, mlt_image_for
char *name = mlt_properties_get( properties,
"_unique_id" );
mlt_properties_set_data( MLT_FRAME_PROPERTIES( frame
), name, b_frame, 0, ( mlt_destructor )mlt_frame_close, NULL );
}
+
+ if ( mlt_properties_get_int( properties, "filter_only" ) )
+ {
+ frame = composite_copy_region( composite, b_frame,
position );
+ }
+
+
// Make sure the filter is in the correct position
while ( filter != NULL )
<?xml version="1.0" encoding="utf-8"?>
<mlt LC_NUMERIC="en_US.UTF-8" root="/home/two" title="colour:black">
<profile description="DV/DVD PAL" width="720" height="576" progressive="0" sample_aspect_num="16" sample_aspect_den="15" display_aspect_num="4" display_aspect_den="3" frame_rate_num="25" frame_rate_den="1" colorspace="601"/>
<producer id="producer0" in="0" out="14999">
<property name="mlt_type">producer</property>
<property name="length">15000</property>
<property name="eof">pause</property>
<property name="resource">black</property>
<property name="aspect_ratio">1.066667</property>
<property name="mlt_service">colour</property>
<filter id="filter0">
<property name="track">0</property>
<property name="mode">alpha</property>
<property name="alpha_operation">clear</property>
<property name="invert">0</property>
<property name="feather">3</property>
<property name="feather_passes">1</property>
<property name="mlt_type">filter</property>
<property name="mlt_service">rotoscoping</property>
<property name="spline">{ "000" : [ [ [ 0.277343, 0.291822 ], [ 0.278211, 0.367694 ], [ 0.27913, 0.448073 ] ], [ [ 0.280053, 0.528437 ], [ 0.280842, 0.609341 ], [ 0.340302, 0.60795 ] ], [ [ 0.401227, 0.607802 ], [ 0.462121, 0.607628 ], [ 0.520456, 0.607461 ] ], [ [ 0.578762, 0.607269 ], [ 0.635723, 0.605937 ], [ 0.635464, 0.528581 ] ], [ [ 0.634943, 0.448072 ], [ 0.634425, 0.367609 ], [ 0.633921, 0.28944 ] ], [ [ 0.633422, 0.211315 ], [ 0.63317, 0.136166 ], [ 0.571314, 0.13509 ] ], [ [ 0.512999, 0.137036 ], [ 0.451884, 0.138622 ], [ 0.396963, 0.140047 ] ], [ [ 0.339781, 0.141181 ], [ 0.275735, 0.13957 ], [ 0.276479, 0.215937 ] ] ], "161" : [ [ [ 0.376992, 0.305392 ], [ 0.377859, 0.381264 ], [ 0.378779, 0.461643 ] ], [ [ 0.280053, 0.528437 ], [ 0.280842, 0.609341 ], [ 0.340302, 0.60795 ] ], [ [ 0.401218, 0.510795 ], [ 0.462112, 0.510621 ], [ 0.520447, 0.510454 ] ], [ [ 0.578762, 0.607269 ], [ 0.635723, 0.605937 ], [ 0.635464, 0.528581 ] ], [ [ 0.541776, 0.475344 ], [ 0.541258, 0.39488 ], [ 0.540755, 0.316712 ] ], [ [ 0.633422, 0.211315 ], [ 0.63317, 0.136166 ], [ 0.571314, 0.13509 ] ], [ [ 0.52578, 0.253725 ], [ 0.464665, 0.25531 ], [ 0.409744, 0.256736 ] ], [ [ 0.339781, 0.141181 ], [ 0.275735, 0.13957 ], [ 0.276479, 0.215937 ] ] ] }</property>
</filter>
</producer>
<playlist id="playlist0">
<entry producer="producer0" in="0" out="14999"/>
</playlist>
<tractor id="tractor0" title="colour:black" global_feed="1" in="0" out="14999">
<track producer="playlist0"/>
</tractor>
</mlt>
diff --git a/src/modules/core/transition_region.c b/src/modules/core/transition_region.c
index afab7f6..9672162 100644
--- a/src/modules/core/transition_region.c
+++ b/src/modules/core/transition_region.c
@@ -292,6 +292,13 @@ static int transition_get_image( mlt_frame frame, uint8_t **image, mlt_image_for
char *name = mlt_properties_get( properties, "_unique_id" );
mlt_properties_set_data( MLT_FRAME_PROPERTIES( frame ), name, b_frame, 0, ( mlt_destructor )mlt_frame_close, NULL );
}
+
+ if ( mlt_properties_get_int( properties, "filter_only" ) )
+ {
+ frame = composite_copy_region( composite, b_frame, position );
+ }
+
+
// Make sure the filter is in the correct position
while ( filter != NULL )
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