Speex to Mp3 using ffmpeg and lame In one of the project we receive a speex(.spx) file from client and we have to play on browser as well as in local machine. So i am using ffmpeg and lame to do this job.It is 2 step process. Step 1 Speex(.spx) file first need to covert into wave(.wav) file using ffmpeg. Step 2 After wave(.wav) conversion convert into mp3 using lame library More info regarding lame you can find out here. You can also manipulate ffmpeg …