https://bugs.gentoo.org/show_bug.cgi?id=503452
patch provided by E.Seifert

--- vcd-0.9/player.c	2008-01-16 13:26:38.000000000 +0100
+++ vcd-0.9/player.c	2014-03-04 22:07:39.374281971 +0100
@@ -161,7 +161,11 @@
      int sp = (Speeds[nts] > 0) ? Mult / Speeds[nts] : -Speeds[nts] * Mult;
      if (sp > MAX_VIDEO_SLOWMOTION)
         sp = MAX_VIDEO_SLOWMOTION;
+#if VDRVERSNUM >= 20103
+     DeviceTrickSpeed(sp,true);
+#else
      DeviceTrickSpeed(sp);
+#endif
   }
 }