When you are ready to commercially distribute your film you will need to essentially sell these rights to the distributor. The likelihood is that since the distributor is going to have to sink even more money into your digital video film they are going to explain the ownership rights that you are transferring very clearly. The main one of these is for the right to distribute the film to domestic and international markets, both theatrical and non-theatrical. Non-theatrical markets would include things like DVD, television, and Internet rights. They may also ask for you to transfer over the ancillary rights, which means the rights to make other media products using your film as source material. This could be things like other films, television programs, or mini-series. You should attempt to hold onto these rights whenever possible as to not undermine the integrity of your original work. Merchandising rights will also be asked for, and you should make sure to be aware of exactly the merchandising plans before signing them away. They could include anything from toys to fast food tie ins, so you need to express your preference and moral stance before allowing them to use your video to sell other products.