Transcoding files

Added getters & setters
Get file's metada using ffprobe
Getting ffmpeg proccess info: frames processed, bitrate, current time and progress percentage through channel

utils/utils.go

@@ -0,0 +1,24 @@
+package utils
+
+import (
+	"strings"
+	"strconv"
+)
+
+func DurToSec(dur string) (sec float64) {
+	durAry := strings.Split(dur, ":")
+	var secs float64
+	if len(durAry) != 3 {
+		return
+	}
+	hr, _ := strconv.ParseFloat(durAry[0], 64)
+	secs = hr * (60 * 60)
+	min, _ := strconv.ParseFloat(durAry[1], 64)
+	secs += min * (60)
+	second, _ := strconv.ParseFloat(durAry[2], 64)
+	secs += second
+	return secs
+}
+
+
+