diff --git a/cmd/example/main.go b/cmd/example/main.go
index 2469268..0e4c1c2 100644
--- a/cmd/example/main.go
+++ b/cmd/example/main.go
@@ -307,7 +307,7 @@ func transcode(hlsStream stream.HLSVideoStream, flagclass int, tinterval float64
 		//getfile := ".tmp/" + seg.Name
 		getfile := workDir + seg.Name
 		//Transcode stream
-		tData, err := t.Transcode(getfile)
+		tData, _, err := t.Transcode(getfile)
 		if err != nil {
 			glog.Errorf("Error transcoding: %v", err)
 		} else {
diff --git a/ffmpeg/ffmpeg.go b/ffmpeg/ffmpeg.go
index bf6604f..1599c7d 100644
--- a/ffmpeg/ffmpeg.go
+++ b/ffmpeg/ffmpeg.go
@@ -72,6 +72,7 @@ type TranscodeResults struct {
 	Decoded    MediaInfo
 	Encoded    []MediaInfo
 	DetectProb float32
+	Contents   string
 }
 
 //for multiple model
@@ -129,7 +130,7 @@ func RTMPToHLS(localRTMPUrl string, outM3U8 string, tmpl string, seglen_secs str
 }
 
 //call subscriber
-func Transcode(input string, workDir string, pid int, gid int, ps []VideoProfile) error {
+func Transcode(input string, workDir string, pid int, gid int, ps []VideoProfile) (string, error) {
 	sdev := fmt.Sprintf("%d", gid)
 	opts := make([]TranscodeOptions, len(ps))
 	for i, param := range ps {
@@ -149,7 +150,12 @@ func Transcode(input string, workDir string, pid int, gid int, ps []VideoProfile
 		Device:     sdev,
 		ParallelID: pid,
 	}
-	return Transcode2(inopts, opts)
+	return TranscodeAndDetection(inopts, opts)
+}
+
+func TranscodeAndDetection(input *TranscodeOptionsIn, ps []TranscodeOptions) (string, error) {
+	res, err := Transcode3(input, ps)
+	return res.Contents, err
 }
 
 func newAVOpts(opts map[string]string) *C.AVDictionary {
@@ -572,7 +578,7 @@ func (t *Transcoder) Transcode(input *TranscodeOptionsIn, psin []TranscodeOption
 		Pixels: int64(decoded.pixels),
 	}
 
-	return &TranscodeResults{Encoded: tr, Decoded: dec, DetectProb: fconfidence}, nil
+	return &TranscodeResults{Encoded: tr, Decoded: dec, DetectProb: fconfidence, Contents: srtmetadata}, nil
 }
 
 func NewTranscoder() *Transcoder {
diff --git a/go.mod b/go.mod
index 83008aa..2f39b7f 100644
--- a/go.mod
+++ b/go.mod
@@ -5,4 +5,5 @@ go 1.12
 require (
 	github.com/golang/glog v0.0.0-20160126235308-23def4e6c14b
 	github.com/livepeer/joy4 v0.1.2-0.20191121080656-b2fea45cbded
+	github.com/stretchr/testify v1.5.1
 )
diff --git a/go.sum b/go.sum
index 04878ea..2d9c69c 100644
--- a/go.sum
+++ b/go.sum
@@ -9,3 +9,8 @@ github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZN
 github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
 github.com/stretchr/testify v1.3.0 h1:TivCn/peBQ7UY8ooIcPgZFpTNSz0Q2U6UrFlUfqbe0Q=
 github.com/stretchr/testify v1.3.0/go.mod h1:M5WIy9Dh21IEIfnGCwXGc5bZfKNJtfHm1UVUgZn+9EI=
+github.com/stretchr/testify v1.5.1 h1:nOGnQDM7FYENwehXlg/kFVnos3rEvtKTjRvOWSzb6H4=
+github.com/stretchr/testify v1.5.1/go.mod h1:5W2xD1RspED5o8YsWQXVCued0rvSQ+mT+I5cxcmMvtA=
+gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
+gopkg.in/yaml.v2 v2.2.2 h1:ZCJp+EgiOT7lHqUV2J862kp8Qj64Jo6az82+3Td9dZw=
+gopkg.in/yaml.v2 v2.2.2/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
diff --git a/transcoder/ffmpeg_segment_transcoder.go b/transcoder/ffmpeg_segment_transcoder.go
index 06c1396..b631108 100644
--- a/transcoder/ffmpeg_segment_transcoder.go
+++ b/transcoder/ffmpeg_segment_transcoder.go
@@ -32,12 +32,13 @@ func (t *FFMpegSegmentTranscoder) SetParallelID(pid int) {
 func (t *FFMpegSegmentTranscoder) SetGpuID(gid int) {
 	t.gpuid = gid
 }
-func (t *FFMpegSegmentTranscoder) Transcode(fname string) ([][]byte, error) {
+func (t *FFMpegSegmentTranscoder) Transcode(fname string) ([][]byte, string ,error) {
 	//Invoke ffmpeg
-	err := ffmpeg.Transcode(fname, t.workDir, t.parallelid, t.gpuid, t.tProfiles)
+	contents := ""
+	contents, err := ffmpeg.Transcode(fname, t.workDir, t.parallelid, t.gpuid, t.tProfiles)
 	if err != nil {
 		glog.Errorf("Error transcoding: %v", err)
-		return nil, err
+		return nil, contents, err
 	}
 
 	dout := make([][]byte, len(t.tProfiles), len(t.tProfiles))
@@ -55,5 +56,5 @@ func (t *FFMpegSegmentTranscoder) Transcode(fname string) ([][]byte, error) {
 		os.Remove(ofile)
 	}
 
-	return dout, nil
+	return dout, contents, nil
 }