ideas wanted for secure display of media resources

Ian Wood ian at
Tue Nov 4 05:27:35 EST 2003

This is a nice idea, but you will have trouble on Windows due to the 
wonders of the random drive letter assigned to the optical drive.  I've 
run into this problem when creating a QuickTime CD portfolio.  With 
LiveStage you could set the sprite to check for the presence/contents 
of an XML file in the same folder as the QT movies, but if someone 
realises what the XML file is for they can just copy that over as well.

I suspect the 'delete on suspend' trick is likely to be your best bet.

Ian Wood
Panoramic photography, from web to billboard, sunrise to moonrise

On Tuesday, November 4, 2003, at 03:37  am, Trevor DeVore wrote:

> One technique you can use with QuickTime is to create a Wired Sprite 
> that will only play from a specific directory.  The sprite will check 
> what directory the media is playing from when you open it and if it 
> isn't the correct one it will refuse to play the movie.  You need to 
> have access to a program like LiveStage Pro ( in order 
> to do this but it is a pretty good way of making sure people don't 
> pass your media around and it won't have much of an impact (if any) on 
> performance.
> I haven't tried this from within Revolution but I have used similar 
> techniques on the web to secure song files.
> -- 
> Trevor DeVore
> Blue Mango Multimedia
> trevor at
> On Nov 3, 2003, at 4:50 PM, Rodney Tamblyn wrote:
>> I have a project which requires display of a significant number of 
>> media resources.  These comprise QuickTime movies and image files, 
>> the latter mostly high resolution jpg files in the 500 to 1.5Mb file 
>> size range.  The project needs to be distributed on CD/DVD-ROM.  My 
>> issue is that I need to be able to keep the resources reasonably 
>> secure.  I'm planning to store the resources in encrypted Valentina 
>> database(s) on the CD-ROMs.  The problem comes when I retrieve the 
>> data for display.
>> Here's some ideas I've had so far:
>> ...
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