Downloading M4V video to AMR audio ?

[supergrey]

Hi, I'm trying to download some video and converting directly to amr audio, I succeded to mp3 but not amr, can someone help me because nobody does that and google didn't help me.

What I tried:

vlc.exe "rtsp://filetodownload.m4v" -I dummy -vvv --sout="#transcode{vcodec=none,acodec=samr,ab="5.25",samplerate=8000,channels=1}:std{access=file,mux=amr,dst='output.amr'}" vlc://quit

Thanks