diff --git a/player/javascript.c b/player/javascript.c
index fa3b09c7f3..8d0e7715f1 100644
--- a/player/javascript.c
+++ b/player/javascript.c
@@ -743,15 +743,6 @@ static void push_nums_obj(js_State *J, const char * const names[],
     }
 }
 
-// args: none, return: object with properties top, bottom, left, right
-static void script_get_osd_margins(js_State *J)
-{
-    struct mp_osd_res r = osd_get_vo_res(jctx(J)->mpctx->osd);
-    const char * const names[] = {"left", "top", "right", "bottom", NULL};
-    const double vals[] = {r.ml, r.mt, r.mr, r.mb};
-    push_nums_obj(J, names, vals);
-}
-
 // args: none, return: object with properties x, y
 static void script_get_mouse_pos(js_State *J)
 {
@@ -1237,7 +1228,6 @@ static const struct fn_entry main_fns[] = {
     FN_ENTRY(get_wakeup_pipe, 0),
     FN_ENTRY(_hook_add, 3),
     FN_ENTRY(_hook_continue, 1),
-    FN_ENTRY(get_osd_margins, 0),
     FN_ENTRY(get_mouse_pos, 0),
     FN_ENTRY(input_set_section_mouse_area, 5),
     FN_ENTRY(last_error, 0),
diff --git a/player/javascript/defaults.js b/player/javascript/defaults.js
index 18edab35b7..0a1c99bcef 100644
--- a/player/javascript/defaults.js
+++ b/player/javascript/defaults.js
@@ -238,11 +238,14 @@ mp.set_osd_ass = function set_osd_ass(res_x, res_y, data) {
     return mp._legacy_overlay.update();
 }
 
+// the following return undefined on error, null passthrough, or legacy object
 mp.get_osd_size = function get_osd_size() {
-    var w = mp.get_property_number("osd-width", 0),
-        h = mp.get_property_number("osd-height", 0),
-        par = mp.get_property_number("osd-par", 0);
-    return {width: w, height: h, aspect: w / (h || 1) / (par || 1)};
+    var d = mp.get_property_native("osd-dimensions");
+    return d && {width: d.w, height: d.h, aspect: d.aspect};
+}
+mp.get_osd_margins = function get_osd_margins() {
+    var d = mp.get_property_native("osd-dimensions");
+    return d && {left: d.ml, right: d.mr, top: d.mt, bottom: d.mb};
 }
 
 /**********************************************************************