|
For opportunistic piracy you can quickly and effortlessly insert custom metadata into WMV file (also works with FLVs, MOVs, and most other container formats). Server load is minimal as it takes a fraction of a second. If you have a Windows server any competent programmer could write a script for this in a few hours, because it merely leverages existing and documented Windows Media Format APIs.
Any re-encoding of the file will remove the metadata. This isn't usually a problem for RapidShare piracy, but it pretty much means any tube uploads will remove your "watermark."
A more elaborate system stamps data into selected frames of the video. You only have to do a couple, and only you will know which frame(s) are stamped. Processing time is 500-1000 milliseconds per stamp, even on a slow server. But be aware: there are several companies that claim a patent on this concept, however obvious it may appear to the rest of us.
You would not insert a customer's credit card information unless you want to be taken to court by the credit card companies, and the users themselves. It's called identity theft.
Like others have said, usernames are a good non-private alternative.
|