[cc-licenses] derivatives and source

Arne Babenhauserheide arne_bab at web.de
Thu May 3 02:45:23 EDT 2012

Am Sonntag, 22. April 2012, 11:34:44 schrieb Francesco Poli:
> We can survive with a PNG file to be modified, but that's not the
> preferred form in this case. Hence, in the case under consideration, we
> are talking about a secret-source image, which should be considered
> legally undistributable, if licensed under the GPL.

For many uses the PNG is the preferred form of modification, so this simply is 
a gray issue with artistic works.

If you require all possible sources, you are quickly at the point where you 
need multi-band recordings, and these cannot be shared efficiently because of 
their size or format. It’s like requiring the odt files from someone who does 
his code-review by sending the code around in open document files and letting 
other people comment by scribbling onto the text.

But one of the answers on the Debian list is this one:

> If the authors can't regenerate some of them anymore they must see the ogg 
files as the preferred source for modification themself.  And this is usually 
what also gets applied to graphic files:  The rendered/flattened image is 
argued to be the preferred source for modification.

That’s exacply the point.

Best wishes,
Ich hab' nichts zu verbergen – hab ich gedacht: 

- http://draketo.de/licht/lieder/ich-hab-nichts-zu-verbergen

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