diff --git a/animation.go b/animation.go
index 22ce12b..7104a0d 100644
--- a/animation.go
+++ b/animation.go
@@ -30,6 +30,10 @@ func parseDurations(durations interface{}, frameCount int) []time.Duration {
 		for i := range val {
 			result[i] = val[i]
 		}
+	case []interface{}:
+		for i := range val {
+			result[i] = parseDurationValue(val[i])
+		}
 	case map[string]time.Duration:
 		for key, duration := range val {
 			min, max, step := parseInterval(key)
@@ -37,12 +41,37 @@ func parseDurations(durations interface{}, frameCount int) []time.Duration {
 				result[i-1] = duration
 			}
 		}
+	case map[string]interface{}:
+		for key, duration := range val {
+			min, max, step := parseInterval(key)
+			for i := min; i <= max; i += step {
+				result[i-1] = parseDurationValue(duration)
+			}
+		}
+	case interface{}:
+		for i := 0; i < frameCount; i++ {
+			result[i] = parseDurationValue(val)
+		}
 	default:
-		log.Fatal(fmt.Sprintf("durations must be time.Duration or []time.Duration or map[string]time.Duration. was %v", durations))
+		log.Fatal(fmt.Sprintf("failed to parse durations: type=%T val=%+v", durations, durations))
 	}
 	return result
 }
 
+func parseDurationValue(value interface{}) time.Duration {
+	switch val := value.(type) {
+	case time.Duration:
+		return val
+	case int:
+		return time.Millisecond * time.Duration(val)
+	case float64:
+		return time.Millisecond * time.Duration(val)
+	default:
+		log.Fatal(fmt.Sprintf("failed to parse duration value: %+v", value))
+	}
+	return 0
+}
+
 func parseIntervals(durations []time.Duration) ([]time.Duration, time.Duration) {
 	result := []time.Duration{0}
 	var time time.Duration = 0
diff --git a/animation_test.go b/animation_test.go
index 2ab993e..423ccfd 100644
--- a/animation_test.go
+++ b/animation_test.go
@@ -1,6 +1,7 @@
 package ganim8_test
 
 import (
+	"fmt"
 	"image"
 	"testing"
 	"time"
@@ -40,18 +41,28 @@ func assertEqualDurations(a, b []time.Duration) bool {
 
 func TestParsingDuration(t *testing.T) {
 	var tests = []struct {
-		name string
-		args time.Duration
+		args []interface{}
 		want []time.Duration
 	}{
-		{"reads a simple array", 3, []time.Duration{3, 3, 3, 3}},
-	}
-	for _, tt := range tests {
-		t.Run(tt.name, func(t *testing.T) {
-			anim := ganim8.NewAnimation(mockSprite(4), tt.args, ganim8.Nop)
+		{
+			args: []interface{}{time.Duration(3)},
+			want: []time.Duration{3},
+		},
+		{
+			args: []interface{}{int(3)},
+			want: []time.Duration{time.Millisecond * 3},
+		},
+		{
+			args: []interface{}{float64(3.0)},
+			want: []time.Duration{time.Millisecond * 3},
+		},
+	}
+	for i, tt := range tests {
+		t.Run(fmt.Sprintf("testing-%d", i), func(t *testing.T) {
+			anim := ganim8.NewAnimation(mockSprite(1), tt.args, ganim8.Nop)
 			got := anim.Durations()
 			if assertEqualDurations(got, tt.want) == false {
-				t.Errorf("%s: got %v; want %v", tt.name, got, tt.want)
+				t.Errorf("got %v; want %v", got, tt.want)
 			}
 		})
 	}