How do you block further access to media files?

[cameraman]

Having uploaded a video file to a web site, what is the best/easiest way in limiting access to view it? The RealMedia file is encoded not to be downloadable, it streams perfectly but I only want a person to be able to watch it the once (if poss). If there is a simplistic way to block further accessing after the one time of viewing (IP blocking?!!?, software that can be integrated within your web design etc), I would appreciate any advice. My knowledge of web site html is a little limited but I’m a good learner if it’s needed.

[ps]

I believe you can do something along these lines with windows media using dynamic rights management. I keep intending to learn more about it, but haven't had the time,

Failing that shockwave could do it detecting your IP address and either allowing the stream to start or not. It would potentially fall over with dial up though because the IP address will change with DHCP each time.

PS

[StuartV]

DRM = Digital Rights Management.

This does involve more expense (and complication). In order to download the drm sdk, you will need to have a certificate from verisign (or someone similar).

You will also need to have your own server - afaik drm requires media server.

You may find it easiest to do something like URL obfuscation (hides the actual URL), coupled with a cookie which you place on the users computer. If the cookie is already present, then a redirection to an error URL can be implemented. This should prevent the majority of casual content thieves, whilst the dedicated thieves will get through most content protection systems one way or another.

Stuart

[cameraman]

Thank you Stuart and PS for your comments, I'll get on and explore the ideas you have suggested and see what I can find out and how easy they are for me to implement.