very thanks for interesting to my problem, lotesdelere! Here, i choose a mp3 file, and chek "convert audio mp3" the result: qt4 debug: Adding option: :sout=#transcode{vcodec=none,acodec=mp3,ab=128,channels=2,samplerate=44100}:std{access=udp{ttl=1},dst=192.168.1.97:1234} qt4 debug: Adding o...