[Flac] Rather serious flac problem

[Free Lunch]

Hi Josh,

I have filed a bug and uploaded an example file.

http://sourceforge.net/tracker/index.php?func=detail&aid=1293830&group_id=13478&atid=113478



Thank you!

  Brian




On 9/16/05, Josh Coalson <xflac at yahoo.com> wrote:
> can you file a bug on sourceforge:
> 
>   http://sourceforge.net/tracker/?group_id=13478&atid=113478
> 
> and attach the first 100k of each file?  it will help to debug
> since I don't have any wave files that cause this behavior.
> 
> Josh
> 
> --- Free Lunch <freelunch at gmail.com> wrote:
> > Okay.. I love flac but just had a rather serious failure that really
> > shakes my confidence.  It resulted in the near loss of a master audio
> > recording.  Fortunately, I have a backup.  Though there may have been
> > other cases where I have lost original material because I have been
> > compressing a lot of originals and deleting them after doing a 'flac
> > -t' on them.
> >
> > Basically, flac failed with a 'warning' but still created flac
> > archives which tested ok.
> >
> > Here's the scoop:
> >
> > % flac *wav
> >
> > flac 1.1.1, Copyright (C) 2000,2001,2002,2003,2004 Josh Coalson
> > flac comes with ABSOLUTELY NO WARRANTY.  This is free software, and
> > you are
> > welcome to redistribute it under certain conditions.  Type `flac' for
> > details.
> >
> > options: -P 4096 -b 4608 -m -l 8 -q 0 -r 3,3
> > umb.1.wav: WARNING: skipping unknown sub-chunk 'p9'
> > umb.2.wav: WARNING: skipping unknown sub-chunk 'c=¶'
> > % flac -t *flac
> >
> > flac 1.1.1, Copyright (C) 2000,2001,2002,2003,2004 Josh Coalson
> > flac comes with ABSOLUTELY NO WARRANTY.  This is free software, and
> > you are
> > welcome to redistribute it under certain conditions.  Type `flac' for
> > details.
> >
> > umb.1.flac: ok
> > umb.2.flac: ok
> > % ls -lt
> > total 3105736
> > -r--r--r--  1 root root       4186 Jun  5 00:43 umb.2.flac
> > -r--r--r--  1 b    b    1933467692 Jun  5 00:43 umb.2.wav
> > -r--r--r--  1 root root       4186 Jun  4 22:37 umb.1.flac
> > -r--r--r--  1 b    b    1243668524 Jun  4 22:37 umb.1.wav
> >
> > % file *
> > umb.1.flac: FLAC audio bitstream data, 24 bit, stereo, 44.1 kHz,
> > length unknown
> > umb.1.wav:  RIFF (little-endian) data, WAVE audio, Microsoft PCM, 24
> > bit, stereo 44100 Hz
> > umb.2.flac: FLAC audio bitstream data, 24 bit, stereo, 44.1 kHz,
> > length unknown
> > umb.2.wav:  RIFF (little-endian) data, WAVE audio, Microsoft PCM, 24
> > bit, stereo 44100 Hz
> >
> >
> > % flac -v
> > flac 1.1.1
> > % uname -a
> > Linux foobar 2.6.7-gentoo-r11 #12 Fri Aug 12 19:40:17 EDT 2005 x86_64
> > AMD Athlon(tm) 64 Processor 3000+ AuthenticAMD GNU/Linux
> >
> >
> > My guess is that in this case, the wav file header may not correctly
> > reflect the length of the wav file.  I would think that flac could be
> > coded to handle these cases correctly.
> 
> 
> 
> 
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