On 23 October 2011 at 17:38, Fons Adriaensen wrote:
> On Sun, Oct 23, 2011 at 08:13:24AM -0700, Kevin Cosgrove wrote:
I never thought much about requirements, as I wasn't thinking of
> * Which operations should leave the watermark intact. If this
Maybe version 0.5 would work with lossless and version 2.X would
work with lossy?
> * The minium duration of a fragment that allows the mark to be
However long is easiest I suppose. 1 sec? 10 sec? Repeated in
spots through the file X times, where 1 < X < (length in minutes)?
> * How strong the 'provability' should be.
Maybe version 0.5 is 10% chance of proving, and version 2.X would be
> * Operational requirements. For example, should it be possible
Some operations would be:
- Verify signature
- Verify content
In a later version maybe the tool could be able to use some of the
above tools, in cooperation with other sound file tools, to preserve
a watermark across sound file format conversions, between lossless
forms and crossing between lossy/lossless domains.
For version 0.01 even just being able to attach an md5 sum of an
audio file along with a gpg signature would be cool.
I use a subset of GNUPG's capability. Maybe you can see that in
my above requirements? ;-)
Is that a useful start on a start?
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