flac dev - Sep 2004 - Re: flac and pipes problems (was: Possible bug)

I'll rearrange a little and respond:

--- Mark Powell <M.S.Powell@salford.ac.uk> wrote:
>   Also, when flac takes input from stdin it fails to
> fill in the wav size
> fields correctly, whereas shorten has no problems
> with this: i.e.
>... 
> You can see it puts a data chunk size of zero in
> there.
>
OK, this has been fixed in CVS.
>   Flac refuses completely to encode from a pipe.
> Again, shorten has no
> problems with both these examples:
> 
> $ shorten - mj.shn < mj.wav
> $ cat mj.wav | shorten - mj.shn
> 
> Flac handles stdin being a file, but the pipe throws
> it:
> 
> $ flac - mj.flac < mj.wav
> $ cat mj.wav | flac -fw - mj.flac
> ERROR seeking while skipping samples in input file -
this should be fixed in CVS now also.  thanks for
the pointers.
>   I note that shorten does transfer across any
> extraneous data after the
> wav chunks, making the wav file after being
> shortened exactly the same as
> before. Could flac not easily do this? Simple copy?
> At least by default
> with a flag to specify if you don't want extraneous
> data transferred
> across?
hmm... I'm not sure this is the right thing to do.
flac is not really meant to store the metadata of
other formats.  are we still talking about the
SoundForge comments?

to answer your question, yes, it's possible, it
just feels kludgey.

Josh


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On Mon, 22 Jan 2001, FLAC wrote:
> >   I note that shorten does transfer across any
> > extraneous data after the
> > wav chunks, making the wav file after being
> > shortened exactly the same as
> > before. Could flac not easily do this? Simple copy?
> > At least by default
> > with a flag to specify if you don't want extraneous
> > data transferred
> > across?
> 
> hmm... I'm not sure this is the right thing to do.
> flac is not really meant to store the metadata of
> other formats.  are we still talking about the
> SoundForge comments?
Yeah. 
> to answer your question, yes, it's possible, it
> just feels kludgey.
I know what you mean. It doesn't exactly reek of elegance. Although I've
been trying hard to think of a case when this can cause a problem. Shorten
does it so it can't be too problematic. If you put a flag in there which
would not propogate any garbage, that'd give the best of both worlds?
  Cheers.

Mark Powell - UNIX System Administrator - The University of Salford
Academic Information Services, Clifford Whitworth Building,
Salford University, Manchester, M5 4WT, UK.
Tel: +44 161 295 5936  Fax: +44 161 295 5888  www.pgp.com for PGP key