Az enyimnek se a manuálja, se a binárisa szerint nincsen ilyen opciója.
$ ffmpeg -nostdin
ffmpeg version 0.7.8, Copyright (c) 2000-2011 the FFmpeg developers
built on Dec 3 2011 01:25:21 with gcc 4.2.2 20070831 prerelease [FreeBSD]
configuration: --prefix=/usr/local --mandir=/usr/local/man --enable-shared --enable-gpl --enable-postproc --enable-avfilter --enable-pthreads --enable-x11grab --enable-memalign-hack --enable-runtime-cpudetect --cc=cc --extra-cflags='-I/usr/local/include/vorbis -I/usr/local/include' --extra-ldflags='-L/usr/local/lib ' --extra-libs=-pthread --disable-debug --disable-sse --disable-mmx --disable-libaacplus --disable-indev=alsa --disable-outdev=alsa --disable-libopencore-amrnb --disable-libopencore-amrwb --disable-libcelt --disable-libdirac --disable-libfaac --enable-libfreetype --enable-frei0r --disable-libgsm --disable-libmp3lame --enable-libopencv --disable-libopenjpeg --disable-librtmp --enable-libschroedinger --disable-ffplay --disable-libspeex --enable-libtheora --disable-vaapi --disable-vdpau --disable-libvo-aacenc --disable-libvo-amrwbenc --enable-libvorbis --enable-libvpx --enable-libx264 --enable-libxvid
libavutil 50. 43. 0 / 50. 43. 0
libavcodec 52.123. 0 / 52.123. 0
libavformat 52.111. 0 / 52.111. 0
libavdevice 52. 5. 0 / 52. 5. 0
libavfilter 1. 80. 0 / 1. 80. 0
libswscale 0. 14. 1 / 0. 14. 1
libpostproc 51. 2. 0 / 51. 2. 0
ffmpeg: unrecognized option 'nostdin'
(Tudom, frissíteni fogom hamarosan, csak jó lenne arra a verzióra, amelyik jól működik.