About
This article shows you how to convert a video from one format to an another with ffmpeg
Interface
Command line
Once, you have installed it, you can run the following command.
from mp4 to avi
The command is pretty simple
ffmpeg -i input.mp4 output.avi
from mov to mp4
The command may also add more information such as the codec
ffmpeg -i {in-video}.mov -vcodec h264 -acodec aac {out-video}.mp4