There are other possibilities from what I am understanding what is the point.

If you are providing a video of the funeral proceedings so that it can be purchased.

Copyrighting is about all that you can do for after the fact....but before the actual sale of the disc you can protect the theft of the material by spoofing as with a transparent layer over the videos or pictures....this stops people from clicking and "saving as" as all they get is the top layer which is shown as a blank page after trying to copy.

Another option is to implant an embedded water mark that obscures some of the frames/pictures......these you hand out and if the customer likes it they have to buy to get a clear picture (no watermark). There are some great 3rd party programs that will do this without any problems....It is what proffessional photographers use to protect themselves from theft of services.

The last option is to not sell DVD's but to use a photo hosting service that requires a private login....the video is played upon the computer but cannot be captured through any run of the meal capturing programs....takes special capturing programs that are too expensive to warant the buying to use to steal the video!

Hope that helps!