Re: [SlimDevices: SqueezeCenter] gettting Unhandled WAV chunk on scan

2016-11-18 Thread d6jg

Well sleuthed



*Vortexbox LMS 7.9 music on QNAP TS419p via NFS* iThingys/iPeng/Tablets
*Living Room* - SB3 -> Onkyo TS606 - > Celestion Ditton F20s - Zone 2 ->
Sony TA FE 320 -> Sennheiser RS 130 & B&W P7
*Office* - RPi -> Sony TA FE320 -> Celestion F10s / SB3 -> Onkyo CRN 755
-> Wharfedale Modus Cubes
*Dining Room* -> SB Boom *Kitchen* -> UE Radio (upgraded to SB Radio)
*Bedroom (Bedside)* - SB Touch -> Topping TP21 -> AKG Headphones
*Bedroom (TV)* - Amazon Fire TV (SB Player) -> Topping TP20 ->
Wharfedale Modus Cubes

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Re: [SlimDevices: SqueezeCenter] gettting Unhandled WAV chunk on scan

2016-11-18 Thread posnos

More info on the reported errors:

DMC = DBPOWERAMP MUSIC CONVERTER

BEXT =  BROADCAST AUDIO EXTENSION CHUNK

In 1997 the European Broadcast Union published the specification of the
Broadcast Wave Format (BWF) for the seamless exchange of audio material
between different broadcast environments and between equipment based on
different computer platforms. BWF is essentially a WAV file with a
Broadcast Audio Extension chunk () that can store metadata.


CART = CART CHUNK

Cart Chunk is a metadata format which was designed for WAV files used in
the radio industry. It was formally ratified as a standard in 2002 by
the Audio Engineering Society (AES)



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Re: [SlimDevices: SqueezeCenter] gettting Unhandled WAV chunk on scan

2016-11-18 Thread posnos

so looking at the code, these errors relate to unknown tags that are in
the WAV (or aiff files).

Further investigation shows that for example, the 'DMC" reported errors
relate to the dBpoweramp Music Converter.

This makes sense in my case as I did convert a lot of flac files I got
from HDTRACKS to WAV files so I guess DMC tagged these in a proprietary
way that gets reported as Unknown by the WAV file parser called by LMS.

So I can conclude, based on my testing and the above code, that these
errors are benign (ie the library scan doesnt skip any files).

Many thanks to myself for finding this out;)



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Re: [SlimDevices: SqueezeCenter] gettting Unhandled WAV chunk on scan

2016-11-18 Thread posnos

Found a reference to the error on github in the project
https://github.com/jrmuizel/AudioScan-opus

The file ~/src/wav.c is used to scan WAV files and get their metadata
and this source code has the same error message format:

-  else {
PerlIO_printf(PerlIO_stderr(), "Unhandled AIFF chunk %s size %d
(skipped)\n", chunk_id, chunk_size);
buffer_consume(buf, chunk_size);
}-

Looking at the readme for the project we see:

-AUTHORS
Andy Grundman, 

Dan Sully, 

COPYRIGHT AND LICENSE
Copyright (C) 2010 Logitech, Inc
-

So I guess its related to the scan retrieving the metadata for each
file.



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Re: [SlimDevices: SqueezeCenter] gettting Unhandled WAV chunk on scan

2016-11-17 Thread posnos

d6jg wrote: 
> Do you have WAVs in your library?

I actually have 31 aiff files (from early HDTRACKS downloads) and did
notice I got "Unhandled AIFF chunk COMT size 26 (skipped)" messages as
well as those WAV errors listed above.

So I copied only these into a separate folder and re-ran a scan against
them

The ssh session returned 35 "Unhandled AIFF chunk COMT size 26
(skipped)" messages (4 more than the actual aiff files I have)

If I browse inside LMS, I see all 31 aiff files and I have started
playing the tracks without any issues.

So I can conclude (at least for this small aiff test) that the files
appear in LMS and play ok.

Would still like to know what the issue means and whether I can 100%
ignore it.

Thanks,

Peter



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Re: [SlimDevices: SqueezeCenter] gettting Unhandled WAV chunk on scan

2016-11-17 Thread posnos

d6jg wrote: 
> Do you have WAVs in your library?


Yes, I am 100% "WAV" based... no flac, aiff etc



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Re: [SlimDevices: SqueezeCenter] gettting Unhandled WAV chunk on scan

2016-11-17 Thread d6jg

Do you have WAVs in your library?



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[SlimDevices: SqueezeCenter] gettting Unhandled WAV chunk on scan

2016-11-17 Thread posnos

I just moved from windows to linux (Centos 6.8).

I started LMS manually and while rescanning, my terminal session
reported many messages of the type:

Unhandled WAV chunk UITS size 1108 (skipped)
Unhandled WAV chunk bext size 858 (skipped)
Unhandled WAV chunk DMC  size 16 (skipped)
Unhandled WAV chunk cart size 2048 (skipped)


Are these an issue?

Thanks,

Peter



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