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List: gimp-developer
Subject: Re: [Gimp-developer] jpeg quality factor
From: saulgoode () flashingtwelve ! brickfilms ! com
Date: 2007-07-09 23:24:40
Message-ID: 20070709192440.bins4qjajw4k4kgw () flashingtwelve ! brickfilms ! com
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Quoting Sven Neumann <sven@gimp.org>:
> ... The happy user is
> silent. If we would do a change every time a user asks for a change,
> then GIMP would be a lot more inconsistent and probably also more buggy.
> For that reason it is important to double check if a request is valid
> and whether a change is really making things better for all users (or at
> least the target audience).
I am quite happy that the GIMP uses its own JPEG quality default
(especially now that it can be modified). I would expect a File->Save
to use the default I chose, not that attached to the image. If I have
a Quality setting of 95 and I load an image that was saved with a
Q=50, I should be very disappointed if the GIMP degraded to that level
when I have specified that I expect less loss when saving.
IMO, the "File->Save" command should use the GIMP's default setting;
but the ideal would be to have that default be one of the following
options:
a. A specific quality value.
b. The quality value of the original JPEG file, if applicable
c. The greater of 'a' and 'b'
d. The original DCT coefficients, if available
I would not consider any of 'b', 'c', and 'd' to be improvements if
'a' were not available as an option.
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