Need some help making a video.

Does anyone know anyway to make a video outside of GM with HL2 characters because i downloaded Source SDK but there isnt any programs to make animations only ones to make maps (Hammer) view models (model Viewer duh) and Make Facial expressions so is there anyway i can make either realtime or keyframe animations using HL2 characters please help.

Some people use 3DStudioMax. But that’s pretty expensive.

I’m not sure of any freeware versions.