Merge commit 'd0c09302'

* commit 'd0c09302':
  avconv: Use av_gettime_relative

Conflicts:
	ffmpeg.c

See: 76191c08Merged-by: Michael Niedermayer <michaelni@gmx.at>

ffmpeg.c

@@ -3780,7 +3780,7 @@ static int64_t getutime(void)
     GetProcessTimes(proc, &c, &e, &k, &u);
     return ((int64_t) u.dwHighDateTime << 32 | u.dwLowDateTime) / 10;
 #else
-    return av_gettime();
+    return av_gettime_relative();
 #endif
 }