+int64_t av_gettime_relative(void)
+{
+#if HAVE_CLOCK_GETTIME
+ struct timespec ts;
+ clock_gettime(CLOCK_MONOTONIC, &ts);
+ return (int64_t)ts.tv_sec * 1000000 + ts.tv_nsec / 1000;
+#else
+ return av_gettime() + 42 * 60 * 60 * INT64_C(1000000);
+#endif
+}
+