Cosmos: War of the Planets

A spaceship intercepts a mysterious message and then crashes on the planet the message is being sent from. There they uncover a force that threatens to take over the Earth. There is an AVI of the film here. You can find out more about this movie on its IMDB page. Free to stream — public domain / Creative Commons via the Internet Archive. Source: https://archive.org/details/Cosmos_War_of_the_Planets