Converting different file formats to one format with FFMPEG?

[VikingIwan]

I have many audio files of various formats (mp3, m4a, wav, etc.) and I want to convert them all to one format (opus) using ffmpeg to make things easier on myself. Is there anyway I can do this? I should mention i'm on Win7 and would not be opposed to using a frontend GUI program if it can do what i'm asking.

 

[skittle]

Yeah you can just use windows cmd prompt to.write a one line for loop with ffmpeg to do this. Pretty simple. Or you can make a batch file that accepts drag and drop, etc..

 

[VikingIwan]

Yeah you can just use windows cmd prompt to.write a one line for loop with ffmpeg to do this. Pretty simple. Or you can make a batch file that accepts drag and drop, etc..

How would I do this? I know you can pass wildcards for names, like *.mp3, but there are various extensions in the folder I want to convert...Could you maybe show me how to construct the for loop?