diff --git a/controllers/transmissionController.go b/controllers/transmissionController.go
index 8e16425..93a2240 100644
--- a/controllers/transmissionController.go
+++ b/controllers/transmissionController.go
@@ -6,10 +6,12 @@ import (
 	"github.com/gofiber/fiber/v2"
 )
 
+// Returns all current transmissions
 func GetTransmissions(c *fiber.Ctx) error {
 	return c.JSON(globals.Transmissions)
 }
 
+// Returns a specific transmission by channel
 func GetTransmissionByChannel(c *fiber.Ctx) error {
 	channel := c.Params("channel")
 	if channel == "" {
@@ -24,28 +26,52 @@ func GetTransmissionByChannel(c *fiber.Ctx) error {
 	return c.JSON(transmission)
 }
 
-// func GetGroups(c *fiber.Ctx) error {
-// 	var groups []models.SystemGroup
+func WatchersCount(c *fiber.Ctx) error {
+	channel := c.Params("channel")
+	if channel == "" {
+		return fiber.ErrBadRequest
+	}
 
-// 	globals.DB.Find(&groups)
+	if transmission, exists := globals.Transmissions[channel]; exists {
+		return c.JSON(transmission.Watchers)
+	}
 
-// 	return c.JSON(groups)
-// }
+	return fiber.ErrNotFound
+}
 
-// func CreateUser(c *fiber.Ctx) error {
-// 	var body map[string]interface{}
+// Called when a user starts to watch a transmission
+func Watch(c *fiber.Ctx) error {
 
-// 	if err := c.BodyParser(&body); err != nil {
-// 		return fiber.ErrBadRequest
-// 	}
+	channel := c.Params("channel")
 
-// 	email := body["email"].(string)
+	if channel == "" {
+		return fiber.ErrBadRequest
+	}
 
-// 	user := services.GetUserByEmail(email)
+	if transmission, exists := globals.Transmissions[channel]; exists {
+		transmission.Watchers = transmission.Watchers + 1
+		return c.JSON(transmission.Watchers)
+	}
 
-// 	if user.ID == 0 {
-// 		fmt.Println("inexistent user")
-// 	}
+	return fiber.ErrNotFound
+}
 
-// 	return c.JSON(user)
-// }
+// Called when a user stops watching a transmission
+func Leave(c *fiber.Ctx) error {
+
+	channel := c.Params("channel")
+
+	if channel == "" {
+		return fiber.ErrBadRequest
+	}
+
+	if transmission, exists := globals.Transmissions[channel]; exists {
+		transmission.Watchers = transmission.Watchers - 1
+		if transmission.Watchers < 0 {
+			transmission.Watchers = 0
+		}
+		return c.JSON(transmission.Watchers)
+	}
+
+	return fiber.ErrNotFound
+}
diff --git a/controllers/webhookController.go b/controllers/webhookController.go
index af207b9..400d8d4 100644
--- a/controllers/webhookController.go
+++ b/controllers/webhookController.go
@@ -90,7 +90,7 @@ func OnPubStart(c *fiber.Ctx) error {
 	// Check if the channel has authorized time to transmit
 	if ok {
 		// If the channel is authorized, add it to the global transmissions list
-		globals.Transmissions[p.StreamName] = currentTransmission
+		globals.Transmissions[p.StreamName] = &currentTransmission
 
 		return c.SendString("On_Pub_Start: " + string(c.Body()))
 	}
@@ -125,6 +125,10 @@ func OnPubStop(c *fiber.Ctx) error {
 
 	// TODO: Updates the transmission on database for future calculation of remaining daily time
 
+	if int(minutes) == 0 {
+		minutes = 1
+	}
+
 	msg := fmt.Sprintf("Transmissão encerrada. Duração %d minutos.\n", int(minutes))
 
 	services.AddTransmissionlog(p.StreamName, msg)
diff --git a/globals/globals.go b/globals/globals.go
index 29687ef..349a52f 100644
--- a/globals/globals.go
+++ b/globals/globals.go
@@ -12,5 +12,5 @@ var (
 
 	DB *gorm.DB
 
-	Transmissions map[string]models.CurrentTransmission
+	Transmissions map[string]*models.CurrentTransmission
 )
diff --git a/main.go b/main.go
index 7a5ceae..b5c000b 100644
--- a/main.go
+++ b/main.go
@@ -98,7 +98,7 @@ func main() {
 	routes.Setup(app)
 
 	// Starts transmissions processing
-	globals.Transmissions = make(map[string]models.CurrentTransmission, 100)
+	globals.Transmissions = make(map[string]*models.CurrentTransmission, 100)
 
 	log.Println("Starting transmissions limits verification process")
 	ticker := time.NewTicker(1 * time.Minute)
diff --git a/routes/routes.go b/routes/routes.go
index f4b70c3..8e4ecf5 100644
--- a/routes/routes.go
+++ b/routes/routes.go
@@ -23,8 +23,6 @@ func Setup(app *fiber.App) {
 
 	// Webhooks
 	app.Post("/on_server_start", controllers.ServerStart)
-	// app.Post("/on_rtmp_connect", controllers.OnRtmpConnect)
-	// app.Post("/on_update", controllers.OnUpdate)
 	app.Post("/on_pub_start", controllers.OnPubStart)
 	app.Post("/on_pub_stop", controllers.OnPubStop)
 	app.Post("/on_sub_start", controllers.OnSubStart)
@@ -33,4 +31,9 @@ func Setup(app *fiber.App) {
 	// Interfaces of transmissions
 	app.Get("/transmissions", controllers.GetTransmissions)
 	app.Get("/transmission/:channel", controllers.GetTransmissionByChannel)
+
+	// Interfaces to player
+	app.Get("/c/:channel", controllers.WatchersCount)
+	app.Get("/w/:channel", controllers.Watch)
+	app.Get("/l/:channel", controllers.Leave)
 }
diff --git a/services/channelservices.go b/services/channelservices.go
index 5f4ab17..4e8513a 100644
--- a/services/channelservices.go
+++ b/services/channelservices.go
@@ -74,7 +74,7 @@ func VerifyTransmissionAuthorization(channelname, sessionid, transmissionkey, pl
 
 	// TODO: Save the transmission on database for future calculation of remaining daily time
 
-	globals.Transmissions[channelname] = currentTransmission
+	globals.Transmissions[channelname] = &currentTransmission
 
 	return true, currentTransmission
 }