options: fix runtime update of teletext-page

options/options.c

@@ -322,7 +322,7 @@ const struct m_sub_options mp_subtitle_sub_opts = {
         {"sub-ass-scale-with-window", OPT_BOOL(ass_scale_with_window)},
         {"sub", OPT_SUBSTRUCT(sub_style, sub_style_conf)},
         {"sub-clear-on-seek", OPT_BOOL(sub_clear_on_seek)},
-        {"teletext-page", OPT_INT(teletext_page), M_RANGE(-1, 999)},
+        {"teletext-page", OPT_INT(teletext_page), M_RANGE(-1, 999), .flags = UPDATE_SUB_FILT},
         {"sub-past-video-end", OPT_BOOL(sub_past_video_end)},
         {"sub-ass-force-style", OPT_REPLACED("sub-ass-style-overrides")},
         {"sub-lavc-o", OPT_KEYVALUELIST(sub_avopts)},