add more options for audio

ffmpeg/metadata.go

@@ -48,11 +48,14 @@ type Streams struct {
 	DivxPacked         string      `json:"divx_packed"`
 	RFrameRrate        string      `json:"r_frame_rate"`
 	AvgFrameRate       string      `json:"avg_frame_rate"`
+	NbFrames           string      `json:"nb_frames"`
 	TimeBase           string      `json:"time_base"`
 	DurationTs         int         `json:"duration_ts"`
 	Duration           string      `json:"duration"`
 	Disposition        Disposition `json:"disposition"`
 	BitRate            string      `json:"bit_rate"`
+	SampleRate         string      `json:"sample_rate"`
+	BitsPerSample      string      `json:"bits_per_sample"`
 }
 
 // Tags ...
@@ -262,6 +265,11 @@ func (s Streams) GetAvgFrameRate() string {
 	return s.AvgFrameRate
 }
 
+//GetNbFrames ...
+func (s Streams) GetNbFrames() string {
+	return s.NbFrames
+}
+
 //GetTimeBase ...
 func (s Streams) GetTimeBase() string {
 	return s.TimeBase
@@ -287,6 +295,16 @@ func (s Streams) GetBitRate() string {
 	return s.BitRate
 }
 
+//GetSampleRate ...
+func (s Streams) GetSampleRate() string {
+	return s.SampleRate
+}
+
+//GetBitsPerSample ...
+func (s Streams) GetBitsPerSample() string {
+	return s.BitsPerSample
+}
+
 //GetDefault ...
 func (d Disposition) GetDefault() int {
 	return d.Default

metadata.go

@@ -46,11 +46,14 @@ type Streams interface {
 	GetDivxPacked() string
 	GetRFrameRrate() string
 	GetAvgFrameRate() string
+	GetNbFrames() string
 	GetTimeBase() string
 	GetDurationTs() int
 	GetDuration() string
 	GetDisposition() Disposition
 	GetBitRate() string
+	GetSampleRate() string
+	GetBitsPerSample() string
 }
 
 // Tags ...