Ign http://ppa.launchpad.net trusty/main Translation-en_US                     
Ign http://ppa.launchpad.net trusty/main Translation-en                        
Ign http://ppa.launchpad.net trusty/main Translation-en_US                     
Ign http://ppa.launchpad.net trusty/main Translation-en                        
Err http://ppa.launchpad.net trusty/main amd64 Packages                        
  404  Not Found
Err http://ppa.launchpad.net trusty/main i386 Packages                         
  404  Not Found
W: Failed to fetch http://ppa.launchpad.net/jon-severinsson/ffmpeg/ubuntu/dists/trusty/main/binary-amd64/Packages  404  Not Found

W: Failed to fetch http://ppa.launchpad.net/jon-severinsson/ffmpeg/ubuntu/dists/trusty/main/binary-i386/Packages  404  Not Found

E: Some index files failed to download. They have been ignored, or old ones used instead.