using ffmpeg to convert video files
 

Recently I tried to convert a .flv file to an mpeg file using ffmpeg. Although I changed directory to the directory in which the.flv file resided FFMPEG said the file did not exist. However when I gave the "ls" command the file was present. Where is my mistake?

Not posting the actual commands you used, perhaps? ;)

Seriously though, you do need to provide some details if you want to get any useful answers.

Like David said, we need the command you used with the output it gave to be any help. It sounds like you may have just mistyped the filename. You can avoid doing that by typing the first few letters and hitting tab. Your shell should auto-complete the name for you, and you can be sure it isn't mistyped.