Mikolaj Machowski on wrote...
| Anthony Thyssen scripsit:
| > Mikolaj Machowski on wrote...
| >| BMP doesn't hold any metadata so JPG converted from them cannot contain
| >| metadata. Conversion any format -> bmp -> any format is recommended here
| >| way of complete removal of metadata when -strip isn't enough (and in
| >| many cases it is not).
| >|
| >
| >
| > In what cases does -strip faile to remove all meta-data
| > when format -> bmp -> format does?
|
| In my cases size of image jpg -> bmp -> jpg is smaller than jpg ->
| -strip -> jpg.
|
Hmm that could be for two reasons...
1/ JPEG is a lossy compressed format, it is always a different size.
It is also a lower quality due to the decode/re-encode cycle.
This is the nature of JPEG images
2/ The JPEG quaility for the JPEG image could have been reset to 75%
which naturally results in a MUCH smaller size.
IM tryes to use the same quality size as the original input image.
Question...
How different is the "identify -verbose" output between the
stripped JPEG and the convertion via BMP?
Is there lots of extra lines (other than slight color changes)?
Anthony Thyssen ( System Programmer ) <[EMAIL PROTECTED]>
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Anthony's Home is his Castle http://www.cit.gu.edu.au/~anthony/
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