video_to_ascii exception

gistfile1.txt

stephenschor:~/rails_work/video_to_ascii (master)$ bundle exec video_to_ascii
mkdir: videos: File exists
mkdir: images: File exists
How long would you like the video to be?
6
Recording Video for 6 seconds ...
/Users/stephenschor/.rvm/rubies/ruby-1.9.3-p362/lib/ruby/1.9.1/open3.rb:202:in `spawn': No such file or directory - ffmpeg -i videos/video.avi (Errno::ENOENT)
  from /Users/stephenschor/.rvm/rubies/ruby-1.9.3-p362/lib/ruby/1.9.1/open3.rb:202:in `popen_run'
	from /Users/stephenschor/.rvm/rubies/ruby-1.9.3-p362/lib/ruby/1.9.1/open3.rb:90:in `popen3'
	from /Users/stephenschor/.rvm/gems/ruby-1.9.3-p362@video_to_ascii/gems/streamio-ffmpeg-0.9.0/lib/ffmpeg/movie.rb:16:in `initialize'
	from /Users/stephenschor/rails_work/video_to_ascii/lib/video_to_ascii.rb:15:in `new'
	from /Users/stephenschor/rails_work/video_to_ascii/lib/video_to_ascii.rb:15:in `initialize'
	from /Users/stephenschor/rails_work/video_to_ascii/bin/video_to_ascii:4:in `new'
	from /Users/stephenschor/rails_work/video_to_ascii/bin/video_to_ascii:4:in `<top (required)>'
	from /Users/stephenschor/.rvm/gems/ruby-1.9.3-p362@video_to_ascii/bin/video_to_ascii:23:in `load'
	from /Users/stephenschor/.rvm/gems/ruby-1.9.3-p362@video_to_ascii/bin/video_to_ascii:23:in `<main>'