Abu Abdullah <falcon.sheep <at> gmail.com> writes: > --enable-demuxer=mp3 --enable-demuxer=wma > --enable-demuxer=rm --enable-demuxer=opus > --enable-demuxer='mov,mp4,m4a,3gp,3g2,mj2' Not all these demuxers exist: --enable-demuxer=mp3,asf,rm,mov,matroska And remove all others. Consider using --disable-network if you don't need it. Carl Eugen