bpa wrote: 
> 
> What is the source of the problem Flac files ?
> Have they been highly compressed and/or by a non stand Flac compressor.
> 

I have no idea. I buy a lot of commercial rips, and as far as I know
there is no way to tell the compression level in a given FLAC file.

bpa wrote: 
> 
> You could unpack a problem Flac file to WAV and then recompress using
> standard Flac at level 0 to see if the compression is the source of the
> issue.
> 

I think you're right - it is!

I converted a very problematic track to WAV and then back to FLAC
compression level 0, increasing a 27 mb file to 30 mb. The new, less
compressed file plays smoothly, while the original file stutters. And
now that I'm able to A-B the behavior of the two files, I strongly
believe the proc on the Squeezebox is heavily loaded with the more
compressed file. The visualizations - in my case, the two bar meter -
had a very low framerate with more compressed file, but were smooth with
the less compressed file.

I think I would have tried this sooner, but there are many historical
posts in this forum insisting that FLAC decoding can't overload any of
the Squeezebox hardware, but my experience seems to run counter to that.
Perhaps the compressors available have gotten even more aggressive as
processors sped up, obsoleting what was once totally sound thinking.

If anyone with Classic hardware wants to try to reproduce my findings,
let me know and I'll find a way to get you the two test files.

philippe_44 wrote: 
> There was a fix sometime ago where we enforce transcoding on flac for
> classic for that reason, AFAIR. What version do LMS and convet.conf do
> you have.

Logitech Media Server Version: 8.2.0 - 1627922070 @ Tue Aug 3 11:37:35
CEST 2021

I'm looking at convert.conf and it looks like it can do whatever
transcoding I need. I actually think it might make sense to convert FLAC
-> Less compressed FLAC, and just use that setup for only my two
affected players. I'll have a look at it tomorrow and try to get it
configured. 

Thanks everyone for the nudges so far.


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