Mediamonkey Re-Analyses Volume repeatedly on some files [#19928]

[miw]

I have my Mediamonkey to analyse volume only for files with unknown levelling adjustment.

It does analyse all the files I want it to analyse, but for some files it re-analyses them repeatedly even though there is a levelling adjustment in the tags. It is only certain files, and most but by no means all of the files it keeps returning to are .flac files. (I have a mix of .flac, .mp3 and .m4a files)

What could there be about a file that causes mediamonkey to keep returning to analyse the volume of the file?

It's a bit annoying because (a) this deleys the analysis of new files I want to analyse and (b) in some but not all cases, it modifies the file and this then triggers a cloud synchronisation to backup storage, wasting bandwidth.

This affects about 1300 tracks out of a collection of about 62k.

[Lowlander]

Do those files also have known Album Volume values?

[miw]

Yes - they do have album volume information visible in the details tab or "properties".

[Lowlander]

So, they have both Track Volume and Album Volume values know, but get re-analyzed. Do all files on the Album (right click Find more from same > Album) have these values calculated?

[miw]

Hmm. I have looked into the class of albums "Get repeatedly re-analysed but don't trigger a file sync (i.e. are not changed according to the OS.) I looked at the album, and it had volume data. But then I re-scanned the directory and the values disappeared - i.e. the values seem to have been written to the database but not the tag. Since I monitor all files on startup, no doubt that detects no volume data in the tags and triggers a volume analysis, which once again fixes the database but not the tags. Rinse and repeat.

I forced volume analysis on about half the albums and verified that tags were written. Caused a massive file sync operation.

I will watch to see if the number of files that gets re-analysed halves next time and post back here.

[Lowlander]

You could try Tools > Edit tags > Update tags on those files and see if the volume values get written to the files.

[miw]

Yep. That works too.

So far, all of the albums I have found in the class "Get repeatedly re-analysed but do not trigger a file sync" have been .flac files. I think there might be some that are not .flac, but that is certainly the great majority.

I have investigated 2 of the albums in the class "Get Repeatedly re-analysed and *do* trigger a file sync, and both albums had a track in them that was silence. This seems to cause an error in the background scan. If you do a force volume analyse, then the track has a volume adjustment of +64dB and also will not play in Mediamonkey. I deleted those tracks from the database. Problem solved as far as I am concerned. People who like to listen to whole albums may not like this solution.

[Peke]

Hi,
It would be great if you can capture that in debug log and supply compressed in support ticket.along with one +64db Volume adjustment.

See viewtopic.php?f=30&t=86643

[miw]

I'm up to my ass in other alligators at the moment. Maybe next week I'll be able to drain the swamp.

In the meantime I have restored a file from backup that reliably causes the problem. I can submit that?

--miw

[Lowlander]

You can attach it to a Support Ticket: https://www.mediamonkey.com/support

[miw]

OK. Let's do something about the swamp.

I've uploaded the debug log and some screenshots and a file that reliably causes the issue.

Ticket #5710

--miw

[Peke]

Hi,
Sample track is pure silence

GOOD CATCH!

[miw]

Yeah. Classic corner case.

[Peke]

Hi,
100% true, strange is that no one noticed before you for past 20 Years

Added as https://www.ventismedia.com/mantis/view.php?id=19928

[miw]

Glad I could help then.

TBH, I have been a gold member since 2008 and I was using MM for some years before that, so it has taken me nearly 20 years to report it. I noticed and was mildly irritated by the effect probably 6-7 years ago, but it has taken me until now to really try to get to the bottom of it. So maybe others have picked it up and been just as lazy as me.