use Track.String() instead of reflect for getting track names

internal/core/api_test.go

@@ -231,7 +231,7 @@ func TestAPIPathsList(t *testing.T) {
 						Type: "rtspSession",
 					},
 					SourceReady:   true,
-					Tracks:        []string{"H264", "MPEG4Audio"},
+					Tracks:        []string{"H264", "MPEG4-audio"},
 					BytesReceived: 16,
 				},
 			},
@@ -291,7 +291,7 @@ func TestAPIPathsList(t *testing.T) {
 						Type: "rtspsSession",
 					},
 					SourceReady: true,
-					Tracks:      []string{"H264", "MPEG4Audio"},
+					Tracks:      []string{"H264", "MPEG4-audio"},
 				},
 			},
 		}, out)

internal/core/source.go

@@ -2,7 +2,6 @@ package core
 
 import (
 	"fmt"
-	"reflect"
 	"strings"
 
 	"github.com/aler9/gortsplib"
@@ -20,9 +19,7 @@ type source interface {
 func sourceTrackNames(tracks gortsplib.Tracks) []string {
 	ret := make([]string, len(tracks))
 	for i, t := range tracks {
-		n := reflect.TypeOf(t).Elem().Name()
+		ret[i] = t.String()
-		n = n[len("Track"):]
-		ret[i] = n
 	}
 	return ret
 }