rendered paste body:~/test1$ ffmpeg -i SDV_0103.MP4 -ar 24000 -acodec pcm_s16le -f s16le -ac 2 -i /dev/zero -map 0.0 -map 1.0 -shortest silence.wav
FFmpeg version SVN-r0.5.1-4:0.5.1-1ubuntu1, Copyright (c) 2000-2009 Fabrice Bellard, et al.
configuration: --extra-version=4:0.5.1-1ubuntu1 --prefix=/usr --enable-avfilter --enable-avfilter-lavf --enable-vdpau --enable-bzlib --enable-libgsm --enable-libschroedinger --enable-libspeex --enable-libtheora --enable-libvorbis --enable-pthreads --enable-zlib --disable-stripping --disable-vhook --enable-runtime-cpudetect --enable-gpl --enable-postproc --enable-swscale --enable-x11grab --enable-libdc1394 --enable-shared --disable-static
libavutil 49.15. 0 / 49.15. 0
libavcodec 52.20. 1 / 52.20. 1
libavformat 52.31. 0 / 52.31. 0
libavdevice 52. 1. 0 / 52. 1. 0
libavfilter 0. 4. 0 / 0. 4. 0
libswscale 0. 7. 1 / 0. 7. 1
libpostproc 51. 2. 0 / 51. 2. 0
built on Mar 4 2010 12:35:30, gcc: 4.4.3
Seems stream 0 codec frame rate differs from container frame rate: 59.94 (60000/1001) -> 29.97 (30000/1001)
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'SDV_0103.MP4':
Duration: 00:02:54.03, start: 0.000000, bitrate: 7877 kb/s
Stream #0.0(eng): Video: h264, yuv420p, 720x480, 29.97 tbr, 29.97 tbn, 59.94 tbc
Stream #0.1(eng): Audio: aac, 24000 Hz, stereo, s16
Input #1, s16le, from '/dev/zero':
Duration: N/A, start: 0.000000, bitrate: N/A
Stream #1.0: Audio: pcm_s16le, 24000 Hz, stereo, s16, 768 kb/s
Number of stream maps must match number of output streams