avfilter/vf_estdif: tweak ecost option

doc/filters.texi

@@ -12376,8 +12376,8 @@ Specify the search radius for best edge matching. Default value is 2.
 Allowed range is from 0 to 15.
 
 @item ecost
-Specify the edge cost for edge matching. Default value is 0.03125.
-Allowed range is from 0 to 1.
+Specify the edge cost for edge matching. Default value is 1.0.
+Allowed range is from 0 to 9.
 
 @item mcost
 Specify the middle cost for edge matching. Default value is 0.5.

libavfilter/vf_estdif.c

@@ -95,7 +95,7 @@ static const AVOption estdif_options[] = {
     CONST("interlaced", "only deinterlace frames marked as interlaced", 1, "deint"),
     { "rslope", "specify the search radius for edge slope tracing", OFFSET(rslope), AV_OPT_TYPE_INT, {.i64=1}, 1, MAX_R, FLAGS, },
     { "redge",  "specify the search radius for best edge matching", OFFSET(redge),  AV_OPT_TYPE_INT, {.i64=2}, 0, MAX_R, FLAGS, },
-    { "ecost",  "specify the edge cost for edge matching",          OFFSET(ecost),  AV_OPT_TYPE_FLOAT,{.dbl=0.03125},0,1,FLAGS, },
+    { "ecost",  "specify the edge cost for edge matching",          OFFSET(ecost),  AV_OPT_TYPE_FLOAT,{.dbl=1},0,9,FLAGS, },
     { "mcost",  "specify the middle cost for edge matching",        OFFSET(mcost),  AV_OPT_TYPE_FLOAT,{.dbl=0.5}, 0, 1,  FLAGS, },
     { "dcost",  "specify the distance cost for edge matching",      OFFSET(dcost),  AV_OPT_TYPE_FLOAT,{.dbl=0.5}, 0, 1,  FLAGS, },
     { "interp", "specify the type of interpolation",                OFFSET(interp), AV_OPT_TYPE_INT, {.i64=1}, 0, 2,     FLAGS, "interp" },