Re: concat problem

[Glenn English <ghe2001@gmail.com>]

On Fri, Sep 22, 2017 at 5:34 PM, Eric Wong <normalperson@yhbt.net> wrote:

> Can you play the file back with the "play(1)" command in sox on
> Jessie?

Don't know. The 'big' computer doesn't do sound (yet), so I move the
files around on sneaker net. I do know how long that first file is,
about 7 seconds. I see what I can do to time it.

> Or try converting from AIFF back to mp3, flac, or whatever else
> and see if the Mac can play that...

I already do that (the big uncompressed file is converted to MP3 as
the last step), and the MP3 does the same thing: stops after 7 seconds

> Any other players you can try?  I don't have much experience
> with VLC and have never used a Mac.

I could try iTunes...

> Any chance you're hitting a file size limit somewhere?  I'm not
> familiar with AIFF, but FLAC supports large files and is lossless, too;
> perhaps try that...

Don't think so. I'm working on "The Girl Who Kicked the Hornet's Nest'
to be sure I process a lot of MP3s. Yesterday, SoX kept saying it
couldn't create a complete AIFF header because the file was too big.
So I cut things down until it quit whining.

It's still small, and SoX just printed out:

-rw-r--r--  1 ghe ghe 316M Sep 22 13:03 big_file.flac

> What's the exact command?

['sox', '--multi-threaded', '--combine', 'concatenate',
'flacs/1-01HornetIntro.flac', 'flacs/1-02Hornet01a.flac',
'flacs/1-03Hornet01b.flac', 'flacs/1-04Hornet01c.flac',
'flacs/1-05Hornet01d.flac', 'flacs/1-06Hornet01e.flac',
'flacs/1-07Hornet02a.flac', 'flacs/1-08Hornet02b.flac',
'flacs/1-09Hornet02c.flac', 'flacs/1-10Hornet02d.flac',
'flacs/1-11Hornet02e.flac', 'flacs/2-01Hornet02f.flac',
'flacs/2-02Hornet03a.flac', 'flacs/2-03Hornet03b.flac',
'flacs/2-04Hornet03c.flac', 'flacs/2-05Hornet03d.flac',
'flacs/2-06Hornet03e.flac', 'flacs/2-07Hornet04a.flac',
'flacs/2-08Hornet04b.flac', 'flacs/2-09Hornet04c.flac',
'flacs/2-10Hornet04d.flac', 'flacs/2-11Hornet04e.flac',
'flacs/2-12Hornet04f.flac', 'big_file.flac']

That's a Python list printed by Python from after I changed to FLAC a
few minutes ago -- that's what the 'subprocess' method wants to see.
There are no commas in the real thing. I think -- I'm a mild Python
noob too, but nothing like I am with SoX.

> Can you reproduce the problem with smaller initial AIFF source
> files?

Like I said, I've tried that.

> Instead of using the entire long list of AIFF source files, can
> you try only concatenating two of them and see if that's
> successful.  (And then move onto 3 files, and 4 files, and so
> on...)

I haven't tried that -- doing it by hand. B (file processing done)

...

FLAC works. On the first 2 files, anyway. Both uncompressed and as an
MP3. I guess the SoX developers were just kidding about the program
working with AIFF.

Thanks very much, Eric. You saved me many hours of frustration.

--
Glenn English

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