+The service reference contains the Service-ID of the recorded service. With
+that ID, you can find the PMT and the elementary streams.
+
+As a backup method, just find the first available PMT and use that.
+
+Strings are always UTF-8 encoded.
+
+tags is a space-delimited list of tags assigned to this movie.
+
+length is the length of the recording, in PTS-units (1/90000s). filesize was
+the filesize at the time the length was calculated, so you can validate if
+this is still up-to-date or must be recalculated.