gajdot@gajdot:~/ffmpeg_test$ [video] -map [audio] -vcodec libx264 -preset ultrafast -acodec aac -strict experimental -ar 44100 -ac 2 -ab 192k -aspect 510:510 -y output.mp4
[video]: command not found
gajdot@gajdot:~/ffmpeg_test$ ./ffmpeg -i first.MOV -i second.MOV -filter_complex "select=gte(n\,3),scale=640:360,crop=490:240:75:57,pad=510:510:10:260:0xFFFFFF[first];[1:v:0]scale=640:360,crop=490:240:75:62[second];[first][second]overlay=10:10[video];[0:a]volume=0.9[a0];[1:a]volume=0.9[a1];[a1][a2]amix[audio]" -map [video] -map [audio] -vcodec libx264 -preset ultrafast -acodec aac -strict experimental -ar 44100 -ac 2 -ab 192k -aspect 510:510 -y output.mp4
ffmpeg version N-59158-g745c40a Copyright (c) 2000-2013 the FFmpeg developers
  built on Dec 17 2013 05:32:25 with gcc 4.6 (Debian 4.6.3-1)
  configuration: --prefix=/root/ffmpeg-static/64bit --extra-cflags='-I/root/ffmpeg-static/64bit/include -static' --extra-ldflags='-L/root/ffmpeg-static/64bit/lib -static' --extra-libs='-lxml2 -lexpat -lfreetype' --enable-static --disable-shared --disable-ffserver --disable-doc --enable-bzlib --enable-zlib --enable-postproc --enable-runtime-cpudetect --enable-libx264 --enable-gpl --enable-libtheora --enable-libvorbis --enable-libmp3lame --enable-gray --enable-libass --enable-libfreetype --enable-libopenjpeg --enable-libspeex --enable-libvo-aacenc --enable-libvo-amrwbenc --enable-version3 --enable-libvpx
  libavutil      53.  0.100 / 53.  0.100
  libavcodec     55. 45.101 / 55. 45.101
  libavformat    55. 22.100 / 55. 22.100
  libavdevice    55.  5.102 / 55.  5.102
  libavfilter     4.  0.100 /  4.  0.100
  libswscale      2.  5.101 /  2.  5.101
  libswresample   0. 17.104 /  0. 17.104
  libpostproc    52.  3.100 / 52.  3.100
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'first.MOV':
  Metadata:
    major_brand     : qt
    minor_version   : 537331968
    compatible_brands: qt  CAEP
    creation_time   : 2013-09-07 00:39:52
  Duration: 00:00:07.97, start: 0.000000, bitrate: 44582 kb/s
    Stream #0:0(eng): Video: h264 (Constrained Baseline) (avc1 / 0x31637661), yuvj420p(pc, smpte170m), 1920x1080, 43037 kb/s, 23.98 fps, 23.98 tbr, 24k tbn, 48k tbc (default)
    Metadata:
      creation_time   : 2013-09-07 00:39:52
    Stream #0:1(eng): Audio: pcm_s16le (sowt / 0x74776F73), 48000 Hz, stereo, s16, 1536 kb/s (default)
    Metadata:
      creation_time   : 2013-09-07 00:39:52
Input #1, mov,mp4,m4a,3gp,3g2,mj2, from 'second.MOV':
  Metadata:
    major_brand     : qt
    minor_version   : 537331968
    compatible_brands: qt  CAEP
    creation_time   : 2013-10-27 19:43:21
  Duration: 00:00:30.52, start: 0.000000, bitrate: 40865 kb/s
    Stream #1:0(eng): Video: h264 (Constrained Baseline) (avc1 / 0x31637661), yuvj420p(pc, smpte170m), 1920x1080, 39325 kb/s, 25 fps, 25 tbr, 25k tbn, 50k tbc (default)
    Metadata:
      creation_time   : 2013-10-27 19:43:21
    Stream #1:1(eng): Audio: pcm_s16le (sowt / 0x74776F73), 48000 Hz, stereo, s16, 1536 kb/s (default)
    Metadata:
      creation_time   : 2013-10-27 19:43:21
Output pad "default" with type audio of the filter instance "Parsed_volume_7" of volume not connected to any destination