rtsp source: support servers that change interleaved IDs

go.mod

@@ -5,7 +5,7 @@ go 1.16
 require (
 	github.com/alecthomas/template v0.0.0-20190718012654-fb15b899a751 // indirect
 	github.com/alecthomas/units v0.0.0-20190924025748-f65c72e2690d // indirect
-	github.com/aler9/gortsplib v0.0.0-20210811100517-d05a92be5f04
+	github.com/aler9/gortsplib v0.0.0-20210825160422-accfc7cd5d40
 	github.com/asticode/go-astits v1.9.0
 	github.com/fsnotify/fsnotify v1.4.9
 	github.com/gin-gonic/gin v1.7.2

go.sum

@@ -2,8 +2,8 @@ github.com/alecthomas/template v0.0.0-20190718012654-fb15b899a751 h1:JYp7IbQjafo
 github.com/alecthomas/template v0.0.0-20190718012654-fb15b899a751/go.mod h1:LOuyumcjzFXgccqObfd/Ljyb9UuFJ6TxHnclSeseNhc=
 github.com/alecthomas/units v0.0.0-20190924025748-f65c72e2690d h1:UQZhZ2O0vMHr2cI+DC1Mbh0TJxzA3RcLoMsFw+aXw7E=
 github.com/alecthomas/units v0.0.0-20190924025748-f65c72e2690d/go.mod h1:rBZYJk541a8SKzHPHnH3zbiI+7dagKZ0cgpgrD7Fyho=
-github.com/aler9/gortsplib v0.0.0-20210811100517-d05a92be5f04 h1:YrzGYp2+DE+AYaFLwKkKPDCDv8BMTPcRD4kzMZaLM8Y=
-github.com/aler9/gortsplib v0.0.0-20210811100517-d05a92be5f04/go.mod h1:s5FsbPRxJhU/YedvUKAKHVY+lQEdYsiJpuN2CHb89cI=
+github.com/aler9/gortsplib v0.0.0-20210825160422-accfc7cd5d40 h1:U9xjMsifS0Lslrg1KCZWVVb+r9X54D9fkcosuej6W/8=
+github.com/aler9/gortsplib v0.0.0-20210825160422-accfc7cd5d40/go.mod h1:s5FsbPRxJhU/YedvUKAKHVY+lQEdYsiJpuN2CHb89cI=
 github.com/aler9/rtmp v0.0.0-20210403095203-3be4a5535927 h1:95mXJ5fUCYpBRdSOnLAQAdJHHKxxxJrVCiaqDi965YQ=
 github.com/aler9/rtmp v0.0.0-20210403095203-3be4a5535927/go.mod h1:vzuE21rowz+lT1NGsWbreIvYulgBpCGnQyeTyFblUHc=
 github.com/asticode/go-astikit v0.20.0 h1:+7N+J4E4lWx2QOkRdOf6DafWJMv6O4RRfgClwQokrH8=