Way to disable HUD?

[Fathom216]

I'm planning to make a montage/trailer of the game, but I need to find out a way to disable the HUD and possibly the ice-effect on the edges of the screen first. I'm also wondering if there might be a way to tweak the FoV. Can anyone help? I'd really appreciate it. I love this game.

And if anyone's wondering about other things I've made, I did this Half-Life 2 video: http://www.youtube.com/watch?v=3ZhnGQXWi1U&feature=channel_video_title