[mihamina@centos6-01 Video]$ ffmpeg -i IPAD_VIDEO.MOV -acodec libvorbis -ac 2 -ab 96k -ar 44100   -b:v 345k -s 640x360 output.webm
ffmpeg version 0.10.2 Copyright (c) 2000-2012 the FFmpeg developers
  built on Jul 27 2012 17:29:58 with gcc 4.4.6 20120305 (Red Hat 4.4.6-4)
  configuration: --prefix=/usr --libdir=/usr/lib64 --shlibdir=/usr/lib64 --mandir=/usr/share/man --enable-shared --enable-runtime-cpudetect --enable-gpl --enable-version3 --enable-nonfree --enable-postproc --enable-avfilter --enable-pthreads --enable-x11grab --enable-vdpau --disable-avisynth --enable-frei0r --enable-libopencv --enable-libdc1394 --enable-libdirac --enable-libfaac --enable-libgsm --enable-libmp3lame --enable-libnut --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-librtmp --enable-libschroedinger --enable-libspeex --enable-libtheora --enable-libvorbis --enable-libvpx --enable-libx264 --enable-libxavs --enable-libxvid --extra-cflags='-O2 -g -pipe -Wall -Wp,-D_FORTIFY_SOURCE=2 -fexceptions -fstack-protector --param=ssp-buffer-size=4 -m64 -mtune=generic -fPIC' --disable-stripping
  libavutil      51. 35.100 / 51. 35.100
  libavcodec     53. 61.100 / 53. 61.100
  libavformat    53. 32.100 / 53. 32.100
  libavdevice    53.  4.100 / 53.  4.100
  libavfilter     2. 61.100 /  2. 61.100
  libswscale      2.  1.100 /  2.  1.100
  libswresample   0.  6.100 /  0.  6.100
  libpostproc    52.  0.100 / 52.  0.100
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'IPAD_VIDEO.MOV':
  Metadata:
    major_brand     : qt
    minor_version   : 0
    compatible_brands: qt
    creation_time   : 2012-07-23 14:33:52
    encoder         : 4.3.5
    encoder-fra     : 4.3.5
    date            : 2012-07-23T17:33:52+0300
    date-fra        : 2012-07-23T17:33:52+0300
  Duration: 00:00:02.57, start: 0.000000, bitrate: 10509 kb/s
    Stream #0:0(und): Video: h264 (Baseline) (avc1 / 0x31637661), yuv420p, 1280x720, 10584 kb/s, 24.02 fps, 24 tbr, 600 tbn, 1200 tbc
    Metadata:
      rotate          : 90
      creation_time   : 2012-07-23 14:33:52
      handler_name    :
    Stream #0:1(und): Audio: aac (mp4a / 0x6134706D), 44100 Hz, mono, s16, 62 kb/s
    Metadata:
      creation_time   : 2012-07-23 14:33:52
      handler_name    :
File 'output.webm' already exists. Overwrite ? [y/N] y
w:1280 h:720 pixfmt:yuv420p tb:1/1000000 sar:0/1 sws_param:
[scale @ 0xef6920] w:1280 h:720 fmt:yuv420p -> w:640 h:360 fmt:yuv420p flags:0x4
[libvpx @ 0xeed6a0] v1.0.0
Output #0, webm, to 'output.webm':
  Metadata:
    major_brand     : qt
    minor_version   : 0
    compatible_brands: qt
    creation_time   : 2012-07-23 14:33:52
    date-fra        : 2012-07-23T17:33:52+0300
    encoder-fra     : 4.3.5
    date            : 2012-07-23T17:33:52+0300
    encoder         : Lavf53.32.100
    Stream #0:0(und): Video: vp8, yuv420p, 640x360, q=-1--1, 345 kb/s, 1k tbn, 24 tbc
    Metadata:
      rotate          : 90
      creation_time   : 2012-07-23 14:33:52
      handler_name    :
    Stream #0:1(und): Audio: vorbis, 44100 Hz, 2 channels, s16, 96 kb/s
    Metadata:
      creation_time   : 2012-07-23 14:33:52
      handler_name    :
Stream mapping:
  Stream #0:0 -> #0:0 (h264 -> libvpx)
  Stream #0:1 -> #0:1 (aac -> libvorbis)
Press [q] to stop, [?] for help
frame=   61 fps= 34 q=0.0 Lsize=     141kB time=00:00:02.54 bitrate= 454.2kbits/s
video:113kB audio:22kB global headers:4kB muxing overhead 1.379005%