Chris Green <[email protected]> wrote:
> Brian Oney <[email protected]> wrote:
> > Could you please try another tool like `convert'? E.g.
> >
> > $ convert 102_PANA/P1020466.JPG test.png
> >
> >
> > What does that say?
>
> Well, after having returned home with the laptop where this was
> failing and doing exactly the same thing again, it now works. However
> it did take several seconds before the >>> prompt appeared.
>
> The problem seems to be intermittent as I'm calling the function while
> importing images from a camera SD card and, sometimes, the import
> hangs but most times it works OK.
>
> I'll see if I can see anything common to when it hangs.
>
... and the result is that it now hangs several images later in the
sequence! It's almost as if some resource is running out.
If I try convert on the 'problem' image it too hangs absolutely
solidly needing a 'kill -9'.
After some experimentation.... OK, it's some sort of file
accessibility problem between the SD card and the computer:-
Running 'convert 102_PANA/P1020493.JPG /tmp/xyz.png' hangs
So 'kill -9' the convert
Run 'cp 102_PANA/P1020493.JPG /tmp/fred' takes several seconds but returns
Running 'convert 102_PANA/P1020493.JPG /tmp/xyz.png' now works
My python program that uses jpegtran now also works OK
Wierd! However it would seem it's not an issue with Python or the
jpegtran module.
--
Chris Green
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