diff --git a/cmd/apply_lut.go b/cmd/apply_lut.go
index 1671c03..dde7886 100644
--- a/cmd/apply_lut.go
+++ b/cmd/apply_lut.go
@@ -88,14 +88,14 @@ var applyLutCmd = &cobra.Command{
 	Use:   "apply-lut",
 	Short: "Apply LUT to one or more images",
 	Run: func(cmd *cobra.Command, _ []string) {
-		input := getFlagString(cmd, "input")
-		lutFile := getFlagString(cmd, "lut")
+		input := getFlagString(cmd, "input", "")
+		lutFile := getFlagString(cmd, "lut", "")
 
 		intensity := getFlagInt(cmd, "intensity", "100")
 		intensityParsed := float64(intensity) / 100
 
 		quality := getFlagInt(cmd, "quality", "100")
-		resizeTo := getFlagString(cmd, "resize")
+		resizeTo := getFlagString(cmd, "resize", "")
 
 		stat, err := os.Stat(input)
 		if err != nil {
diff --git a/cmd/export_tags.go b/cmd/export_tags.go
index 65e5e3d..de0c1cc 100644
--- a/cmd/export_tags.go
+++ b/cmd/export_tags.go
@@ -91,9 +91,9 @@ var exportTags = &cobra.Command{
 	Use:   "export-tags",
 	Short: "Export HiLight/other tags in video",
 	Run: func(cmd *cobra.Command, _ []string) {
-		input := getFlagString(cmd, "input")
-		format := getFlagString(cmd, "format")
-		output := getFlagString(cmd, "output")
+		input := getFlagString(cmd, "input", "")
+		format := getFlagString(cmd, "format", "")
+		output := getFlagString(cmd, "output", "")
 
 		stat, err := os.Stat(input)
 		if err != nil {
diff --git a/cmd/helper.go b/cmd/helper.go
index c1e913d..bed98b8 100644
--- a/cmd/helper.go
+++ b/cmd/helper.go
@@ -8,7 +8,7 @@ import (
 	"github.com/spf13/viper"
 )
 
-func getFlagString(cmd *cobra.Command, name string) string {
+func getFlagString(cmd *cobra.Command, name string, defaultString string) string {
 	value, err := cmd.Flags().GetString(name)
 	if err != nil {
 		cui.Error("Problem parsing "+name, err)
@@ -16,6 +16,9 @@ func getFlagString(cmd *cobra.Command, name string) string {
 	if value == "" {
 		value = viper.GetString(name)
 	}
+	if value == "" {
+		value = defaultString
+	}
 	return value
 }
 
diff --git a/cmd/import.go b/cmd/import.go
index cfde672..bd39a8f 100644
--- a/cmd/import.go
+++ b/cmd/import.go
@@ -25,10 +25,10 @@ var importCmd = &cobra.Command{
 	Use:   "import",
 	Short: "Import media",
 	Run: func(cmd *cobra.Command, _ []string) {
-		input := getFlagString(cmd, "input")
-		output := getFlagString(cmd, "output")
-		camera := getFlagString(cmd, "camera")
-		projectName := getFlagString(cmd, "name")
+		input := getFlagString(cmd, "input", "")
+		output := getFlagString(cmd, "output", "")
+		camera := getFlagString(cmd, "camera", "")
+		projectName := getFlagString(cmd, "name", "")
 
 		if projectName != "" {
 			_, err := os.Stat(filepath.Join(output, projectName))
@@ -40,12 +40,12 @@ var importCmd = &cobra.Command{
 			}
 		}
 
-		dateFormat := getFlagString(cmd, "date")
+		dateFormat := getFlagString(cmd, "date", "dd-mm-yyyy")
 		bufferSize := getFlagInt(cmd, "buffer", "1000")
-		prefix := getFlagString(cmd, "prefix")
+		prefix := getFlagString(cmd, "prefix", "")
 		dateRange := getFlagSlice(cmd, "range")
-		cameraName := getFlagString(cmd, "camera-name")
-		connection := utils.ConnectionType(getFlagString(cmd, "connection"))
+		cameraName := getFlagString(cmd, "camera-name", "")
+		connection := utils.ConnectionType(getFlagString(cmd, "connection", ""))
 		skipAuxFiles := getFlagBool(cmd, "skip-aux", "true")
 		sortBy := getFlagSlice(cmd, "sort-by")
 		if len(sortBy) == 0 {
@@ -137,7 +137,7 @@ func init() {
 	importCmd.Flags().StringP("output", "o", "", "Output directory for sorted media")
 	importCmd.Flags().StringP("name", "n", "", "Project name")
 	importCmd.Flags().StringP("camera", "c", "", "Camera type")
-	importCmd.Flags().StringP("date", "d", "dd-mm-yyyy", "Date format, dd-mm-yyyy by default")
+	importCmd.Flags().StringP("date", "d", "", "Date format, dd-mm-yyyy by default")
 	importCmd.Flags().StringP("buffer", "b", "", "Buffer size for copying, default is 1000 bytes")
 	importCmd.Flags().StringP("prefix", "p", "", "Prefix for each file, pass `cameraname` to prepend the camera name (eg: Hero9 Black)")
 	importCmd.Flags().StringSlice("range", []string{}, "A date range, eg: 01-05-2020,05-05-2020 -- also accepted: `today`, `yesterday`, `week`")
diff --git a/cmd/update.go b/cmd/update.go
index 012d432..42f8131 100644
--- a/cmd/update.go
+++ b/cmd/update.go
@@ -12,8 +12,8 @@ var updateCmd = &cobra.Command{
 	Use:   "update",
 	Short: "Update camera firmware",
 	Run: func(cmd *cobra.Command, _ []string) {
-		input := getFlagString(cmd, "input")
-		camera := getFlagString(cmd, "camera")
+		input := getFlagString(cmd, "input", "")
+		camera := getFlagString(cmd, "camera", "")
 		c, err := utils.CameraGet(camera)
 		if err != nil {
 			cui.Error("Something went wrong", err)
@@ -25,7 +25,7 @@ var updateCmd = &cobra.Command{
 				cui.Error("Something went wrong", err)
 			}
 		case utils.Insta360:
-			model := getFlagString(cmd, "model")
+			model := getFlagString(cmd, "model", "")
 			err = insta360.UpdateCamera(input, model)
 			if err != nil {
 				cui.Error("Something went wrong", err)