deinterlace: fix off-by-one crash when downstream caps contain a list of framerates

https://bugzilla.gnome.org/show_bug.cgi?id=719544

diff --git a/gst/deinterlace/gstdeinterlace.c b/gst/deinterlace/gstdeinterlace.c
index 518734e..e13c41b 100644 (file)
--- a/gst/deinterlace/gstdeinterlace.c
+++ b/gst/deinterlace/gstdeinterlace.c
@@ -2223,7 +2223,7 @@ gst_deinterlace_getcaps (GstDeinterlace * self, GstPad * pad, GstCaps * filter)
         for (i = gst_value_list_get_size (val); i > 0; i--) {
           gint n, d;
 
-          lval = gst_value_list_get_value (val, i);
+          lval = gst_value_list_get_value (val, i - 1);
 
           if (G_VALUE_TYPE (lval) != GST_TYPE_FRACTION)
             continue;