add mp4 file sample

example/file/main.go

@@ -0,0 +1,43 @@
+package main
+
+import (
+	"net/http"
+
+	"github.com/Danile71/go-logger"
+	"github.com/Danile71/go-rtsp"
+	"github.com/gorilla/mux"
+	"github.com/mattn/go-mjpeg"
+)
+
+const uri = "./sample.mp4"
+
+func main() {
+	s := mjpeg.NewStream()
+
+	stream, err := rtsp.Open(uri)
+	if logger.OnError(err) {
+		return
+	}
+
+	go func() {
+		for {
+			pkt, err := stream.ReadPacket()
+			if logger.OnError(err) {
+				continue
+			}
+
+			if pkt.IsVideo() {
+				s.Update(pkt.Data())
+			}
+		}
+	}()
+
+	streamHandler := func(w http.ResponseWriter, r *http.Request) {
+		s.ServeHTTP(w, r)
+	}
+
+	router := mux.NewRouter()
+	router.HandleFunc("/stream", streamHandler)
+	http.Handle("/", router)
+	http.ListenAndServe(":8181", nil)
+}