diff --git a/writer/pkg/storage/file.go b/writer/pkg/storage/file.go
index f1de59a..769f04d 100644
--- a/writer/pkg/storage/file.go
+++ b/writer/pkg/storage/file.go
@@ -190,8 +190,8 @@ func CreateTXT(path, date, startTime, endTime string) (string, error) {
 	return fileNameTXT, nil
 }
 
-// mergeFiles merges the collected files into one MP4 file.
-func mergeFiles(path, fileNamesTXT string) (string, error) {
+// MergeFiles merges the collected files into one MP4 file.
+func MergeFiles(path, fileNamesTXT string) (string, error) {
 	fileNameRes := time.Now().Format("15-04-05") + "_video.mp4"
 
 	cmd := exec.Command("ffmpeg",
@@ -427,12 +427,11 @@ func GetHeader(id, res, file string) ([]string, error) {
 	if _, err := io.ReadFull(f, segData); err != nil {
 		return nil, errors.New("reading header error: " + err.Error())
 	}
-	//headerReader := bytes.NewReader(segData)
-	//headerSeg, err := ReadHeaderSegment(headerReader)
+	headerReader := bytes.NewReader(segData)
+	headerSeg, err := ReadHeaderSegment(headerReader)
 	if err != nil {
 		return nil, errors.New("reading header error: " + err.Error())
 	}
-	return strings.Split(string(segData), "\n"), nil
 }
 
 // readString reads string length and then reads string data.