diff --git a/rtmp/flv/writer.go b/rtmp/flv/writer.go
index 711a1b7..a2703c6 100644
--- a/rtmp/flv/writer.go
+++ b/rtmp/flv/writer.go
@@ -25,6 +25,7 @@ func NewFLVWriter(stream_key string) (*FLVWriter, error) {
 		"-hls_list_size", "4",
 		"-hls_base_url", "/vid/" + stream_key + "/",
 		"-hls_flags", "delete_segments",
+		"-hls_flags", "+program_date_time",
 		"stream.m3u8",
 	)
 	transcoder.Dir = base_dir + "/live/" + stream_key + "/"