diff --git a/libavfilter/vf_fps.c b/libavfilter/vf_fps.c
index ec77ccf722..c1ffc5213b 100644
--- a/libavfilter/vf_fps.c
+++ b/libavfilter/vf_fps.c
@@ -25,6 +25,8 @@
  * a filter enforcing given constant framerate
  */
 
+#include <float.h>
+
 #include "libavutil/common.h"
 #include "libavutil/fifo.h"
 #include "libavutil/mathematics.h"
@@ -61,7 +63,7 @@ typedef struct FPSContext {
 #define F AV_OPT_FLAG_FILTERING_PARAM
 static const AVOption fps_options[] = {
     { "fps", "A string describing desired output framerate", OFFSET(framerate), AV_OPT_TYPE_VIDEO_RATE, { .str = "25" }, .flags = V|F },
-    { "start_time", "Assume the first PTS should be this value.", OFFSET(start_time), AV_OPT_TYPE_DOUBLE, { .dbl = -9223372036854775808.0}, INT64_MIN, INT64_MAX, V },
+    { "start_time", "Assume the first PTS should be this value.", OFFSET(start_time), AV_OPT_TYPE_DOUBLE, { .dbl = DBL_MAX}, -DBL_MAX, DBL_MAX, V },
     { "round", "set rounding method for timestamps", OFFSET(rounding), AV_OPT_TYPE_INT, { .i64 = AV_ROUND_NEAR_INF }, 0, 5, V|F, "round" },
     { "zero", "round towards 0",      OFFSET(rounding), AV_OPT_TYPE_CONST, { .i64 = AV_ROUND_ZERO     }, 0, 5, V|F, "round" },
     { "inf",  "round away from 0",    OFFSET(rounding), AV_OPT_TYPE_CONST, { .i64 = AV_ROUND_INF      }, 0, 5, V|F, "round" },
@@ -182,7 +184,7 @@ static int filter_frame(AVFilterLink *inlink, AVFrame *buf)
             if (ret < 0)
                 return ret;
 
-            if (s->start_time != AV_NOPTS_VALUE) {
+            if (s->start_time != DBL_MAX) {
                 double first_pts = s->start_time * AV_TIME_BASE;
                 first_pts = FFMIN(FFMAX(first_pts, INT64_MIN), INT64_MAX);
                 s->first_pts = s->pts = av_rescale_q(first_pts, AV_TIME_BASE_Q,