garfieldfromgarfield said:
thank you for your help and sorry for the late response. i have downloaded homebrew and ffmpeg and i have the video i would like to convert. i am typing

ffmpeg -i videotitle.mp4 videotitle.webm

but it says that no such file or directory exists. is "i" supposed to be a variable, or am i not entering enough information?

Looks good enough for a test run. That error may indicate you haven't quoted the input filename correctly (if it has spaces or other special characters). If it does have special characters and you don't already know how to correctly quote filenames, renaming the file to avoid that is probably simplest.

I guess one other alternative is that you're not in the correct directory.