Is this an info log or a debug log?
Seems to be too spammy to be an info log. I would set this as long.debug. Info logs are supposed to be low traffic one off logs that informs the user that something has happened. A user would typically not care that your printing these numbers. DEBUG logs on the other hand are messages that usually developers use to debug some thing.

Also "message structure" tells me nothing about what type of message this is. Your log description should describe the details it is printing so that someone reading it knows what that number is. message.structure is a GStreamer API which returns messages on a bus to callback functions so this is not representative of the actual message you're printing.