extern int mlt_properties_anim_get_int( mlt_properties self, const char *name, int position, int length );
extern int mlt_properties_anim_set_int( mlt_properties self, const char *name, int value, mlt_keyframe_type keyframe_type, int position, int length );
+extern double mlt_properties_anim_get_double( mlt_properties self, const char *name, int position, int length );
+extern int mlt_properties_anim_set_double( mlt_properties self, const char *name, double value, mlt_keyframe_type keyframe_type, int position, int length );
extern int mlt_properties_set_rect( mlt_properties self, const char *name, mlt_rect value );
extern mlt_rect mlt_properties_get_rect( mlt_properties self, const char *name );
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extern int mlt_properties_anim_set_rect( mlt_properties self, const char *name, mlt_rect value, mlt_keyframe_type keyframe_type, int position, int length );
extern mlt_rect mlt_properties_anim_get_rect( mlt_properties self, const char *name, int position, int length );