slick@slick-CQ5504F ~/Downloads $ ffmpeg -f x11grab -r 25 -s 854x480 -i :0.0+151,215 output.flv
ffmpeg version git-2013-07-09-00b1401 Copyright (c) 2000-2013 the FFmpeg developers
  built on Jul  9 2013 02:08:01 with gcc 4.7 (Ubuntu/Linaro 4.7.2-2ubuntu1)
  configuration: --prefix=/home/slick/ffmpeg_build --extra-cflags=-I/home/slick/ffmpeg_build/include --extra-ldflags=-L/home/slick/ffmpeg_build/lib --bindir=/home/slick/bin --extra-libs=-ldl --enable-gpl --enable-libass --enable-libfdk-aac --enable-libmp3lame --enable-libopus --enable-libtheora --enable-libvorbis --enable-libvpx --enable-libx264 --enable-nonfree --enable-x11grab
  libavutil      52. 38.100 / 52. 38.100
  libavcodec     55. 18.102 / 55. 18.102
  libavformat    55. 11.101 / 55. 11.101
  libavdevice    55.  2.100 / 55.  2.100
  libavfilter     3. 79.100 /  3. 79.100
  libswscale      2.  3.100 /  2.  3.100
  libswresample   0. 17.102 /  0. 17.102
  libpostproc    52.  3.100 / 52.  3.100
[x11grab @ 0x37b6a40] device: :0.0+151,215 -> display: :0.0 x: 151 y: 215 width: 854 height: 480
[x11grab @ 0x37b6a40] shared memory extension found
Input #0, x11grab, from ':0.0+151,215':
  Duration: N/A, start: 1376249275.712420, bitrate: 327936 kb/s
    Stream #0:0: Video: rawvideo (BGR[0] / 0x524742), bgr0, 854x480, 327936 kb/s, 25 tbr, 1000k tbn, 25 tbc
Output #0, flv, to 'output.flv':
  Metadata:
    encoder         : Lavf55.11.101
    Stream #0:0: Video: flv1 (flv) ([2][0][0][0] / 0x0002), yuv420p, 854x480, q=2-31, 200 kb/s, 1k tbn, 25 tbc
Stream mapping:
  Stream #0:0 -> #0:0 (rawvideo -> flv)
Press [q] to stop, [?] for help
[swscaler @ 0x37a0040] Warning: data is not aligned! This can lead to a speedloss
frame=   15 fps=0.0 q=2.0 size=     314kB time=00:00:00.60 bitrate=4289.3kbits/sframe=   28 fps= 27 q=7.4 size=     456kB time=00:00:01.12 bitrate=3335.0kbits/sframe=   41 fps= 26 q=31.0 size=     493kB time=00:00:01.64 bitrate=2464.2kbits/frame=   54 fps= 26 q=31.0 size=     520kB time=00:00:02.16 bitrate=1973.4kbits/frame=   67 fps= 26 q=31.0 size=     547kB time=00:00:02.68 bitrate=1673.2kbits/frame=   80 fps= 26 q=31.0 size=     575kB time=00:00:03.20 bitrate=1470.9kbits/frame=   93 fps= 26 q=31.0 size=     602kB time=00:00:03.72 bitrate=1326.6kbits/frame=  106 fps= 26 q=31.0 size=     631kB time=00:00:04.24 bitrate=1218.2kbits/frame=  119 fps= 25 q=31.0 size=     661kB time=00:00:04.76 bitrate=1138.3kbits/frame=  132 fps= 25 q=31.0 size=     691kB time=00:00:05.28 bitrate=1071.7kbits/frame=  145 fps= 25 q=24.8 size=     742kB time=00:00:05.80 bitrate=1048.1kbits/frame=  158 fps= 25 q=31.0 size=     773kB time=00:00:06.32 bitrate=1002.1kbits/frame=  171 fps= 25 q=31.0 size=     804kB time=00:00:06.84 bitrate= 962.5kbits/frame=  184 fps= 25 q=31.0 size=     836kB time=00:00:07.36 bitrate= 930.9kbits/frame=  197 fps= 25 q=31.0 size=     867kB time=00:00:07.88 bitrate= 901.0kbits/frame=  210 fps= 25 q=31.0 size=     923kB time=00:00:08.40 bitrate= 899.7kbits/frame=  223 fps= 25 q=31.0 size=     961kB time=00:00:08.92 bitrate= 882.2kbits/frame=  234 fps= 25 q=31.0 size=     999kB time=00:00:09.36 bitrate= 874.5kbits/frame=  245 fps= 25 q=31.0 size=    1052kB time=00:00:09.80 bitrate= 879.2kbits/frame=  255 fps= 24 q=31.0 size=    1080kB time=00:00:10.20 bitrate= 867.1kbits/frame=  263 fps= 24 q=31.0 size=    1085kB time=00:00:10.52 bitrate= 844.8kbits/frame=  277 fps= 24 q=24.8 size=    1136kB time=00:00:11.08 bitrate= 839.6kbits/frame=  290 fps= 24 q=31.0 size=    1156kB time=00:00:11.60 bitrate= 816.4kbits/frame=  303 fps= 24 q=31.0 size=    1176kB time=00:00:12.12 bitrate= 795.2kbits/frame=  316 fps= 24 q=31.0 size=    1198kB time=00:00:12.64 bitrate= 776.1kbits/frame=  329 fps= 24 q=31.0 size=    1221kB time=00:00:13.16 bitrate= 760.1kbits/frame=  342 fps= 24 q=31.0 size=    1244kB time=00:00:13.68 bitrate= 744.9kbits/frame=  355 fps= 24 q=31.0 size=    1269kB time=00:00:14.20 bitrate= 731.9kbits/frame=  368 fps= 24 q=31.0 size=    1283kB time=00:00:14.72 bitrate= 714.0kbits/frame=  381 fps= 24 q=24.8 size=    1309kB time=00:00:15.24 bitrate= 703.5kbits/frame=  394 fps= 24 q=31.0 size=    1323kB time=00:00:15.76 bitrate= 687.8kbits/frame=  407 fps= 24 q=31.0 size=    1337kB time=00:00:16.28 bitrate= 672.8kbits/frame=  420 fps= 24 q=31.0 size=    1350kB time=00:00:16.80 bitrate= 658.4kbits/frame=  433 fps= 24 q=31.0 size=    1364kB time=00:00:17.32 bitrate= 644.9kbits/frame=  446 fps= 24 q=31.0 size=    1377kB time=00:00:17.84 bitrate= 632.2kbits/frame=  459 fps= 24 q=31.0 size=    1390kB time=00:00:18.36 bitrate= 620.2kbits/frame=  472 fps= 24 q=31.0 size=    1419kB time=00:00:18.88 bitrate= 615.7kbits/frame=  485 fps= 25 q=31.0 size=    1437kB time=00:00:19.40 bitrate= 607.0kbits/frame=  498 fps= 25 q=31.0 size=    1456kB time=00:00:19.92 bitrate= 598.8kbits/frame=  511 fps= 25 q=31.0 size=    1490kB time=00:00:20.44 bitrate= 597.2kbits/frame=  524 fps= 25 q=31.0 size=    1517kB time=00:00:20.96 bitrate= 593.1kbits/frame=  537 fps= 25 q=31.0 size=    1553kB time=00:00:21.48 bitrate= 592.4kbits/frame=  550 fps= 25 q=31.0 size=    1588kB time=00:00:22.00 bitrate= 591.5kbits/frame=  563 fps= 25 q=24.8 size=    1626kB time=00:00:22.52 bitrate= 591.5kbits/frame=  576 fps= 25 q=31.0 size=    1649kB time=00:00:23.04 bitrate= 586.4kbits/frame=  589 fps= 25 q=31.0 size=    1690kB time=00:00:23.56 bitrate= 587.8kbits/frame=  602 fps= 25 q=31.0 size=    1715kB time=00:00:24.08 bitrate= 583.3kbits/frame=  615 fps= 25 q=31.0 size=    1737kB time=00:00:24.60 bitrate= 578.6kbits/frame=  628 fps= 25 q=31.0 size=    1766kB time=00:00:25.12 bitrate= 575.9kbits/frame=  641 fps= 25 q=31.0 size=    1789kB time=00:00:25.64 bitrate= 571.4kbits/frame=  654 fps= 25 q=31.0 size=    1820kB time=00:00:26.16 bitrate= 570.1kbits/frame=  667 fps= 25 q=31.0 size=    1868kB time=00:00:26.68 bitrate= 573.6kbits/frame=  680 fps= 25 q=31.0 size=    1900kB time=00:00:27.20 bitrate= 572.2kbits/frame=  693 fps= 25 q=31.0 size=    1967kB time=00:00:27.72 bitrate= 581.4kbits/frame=  706 fps= 25 q=31.0 size=    2009kB time=00:00:28.24 bitrate= 582.7kbits/frame=  719 fps= 25 q=24.8 size=    2090kB time=00:00:28.76 bitrate= 595.3kbits/frame=  732 fps= 25 q=31.0 size=    2145kB time=00:00:29.28 bitrate= 600.2kbits/frame=  745 fps= 25 q=31.0 size=    2171kB time=00:00:29.80 bitrate= 596.9kbits/frame=  758 fps= 25 q=31.0 size=    2210kB time=00:00:30.32 bitrate= 597.1kbits/frame=  771 fps= 25 q=31.0 size=    2261kB time=00:00:30.84 bitrate= 600.6kbits/frame=  784 fps= 25 q=31.0 size=    2302kB time=00:00:31.36 bitrate= 601.2kbits/frame=  797 fps= 25 q=31.0 size=    2325kB time=00:00:31.88 bitrate= 597.4kbits/frame=  810 fps= 25 q=31.0 size=    2374kB time=00:00:32.40 bitrate= 600.2kbits/frame=  823 fps= 25 q=31.0 size=    2414kB time=00:00:32.92 bitrate= 600.7kbits/frame=  836 fps= 25 q=31.0 size=    2448kB time=00:00:33.44 bitrate= 599.7kbits/frame=  849 fps= 25 q=31.0 size=    2486kB time=00:00:33.96 bitrate= 599.7kbits/frame=  862 fps= 25 q=31.0 size=    2523kB time=00:00:34.48 bitrate= 599.3kbits/frame=  875 fps= 25 q=24.8 size=    2575kB time=00:00:35.00 bitrate= 602.7kbits/frame=  888 fps= 25 q=31.0 size=    2619kB time=00:00:35.52 bitrate= 604.1kbits/frame=  901 fps= 25 q=31.0 size=    2656kB time=00:00:36.04 bitrate= 603.6kbits/frame=  914 fps= 25 q=31.0 size=    2698kB time=00:00:36.56 bitrate= 604.4kbits/frame=  927 fps= 25 q=31.0 size=    2754kB time=00:00:37.08 bitrate= 608.5kbits/frame=  940 fps= 25 q=31.0 size=    2821kB time=00:00:37.60 bitrate= 614.6kbits/frame=  953 fps= 25 q=31.0 size=    2874kB time=00:00:38.12 bitrate= 617.6kbits/frame=  966 fps= 25 q=31.0 size=    2950kB time=00:00:38.64 bitrate= 625.5kbits/frame=  979 fps= 25 q=31.0 size=    3015kB time=00:00:39.16 bitrate= 630.7kbits/frame=  992 fps= 25 q=31.0 size=    3100kB time=00:00:39.68 bitrate= 640.0kbits/frame= 1005 fps= 25 q=31.0 size=    3162kB time=00:00:40.20 bitrate= 644.4kbits/frame= 1018 fps= 25 q=31.0 size=    3188kB time=00:00:40.72 bitrate= 641.3kbits/frame= 1031 fps= 25 q=24.8 size=    3232kB time=00:00:41.24 bitrate= 642.0kbits/frame= 1044 fps= 25 q=31.0 size=    3257kB time=00:00:41.76 bitrate= 638.9kbits/frame= 1057 fps= 25 q=31.0 size=    3304kB time=00:00:42.28 bitrate= 640.1kbits/frame= 1070 fps= 25 q=31.0 size=    3392kB time=00:00:42.80 bitrate= 649.1kbits/frame= 1083 fps= 25 q=31.0 size=    3433kB time=00:00:43.32 bitrate= 649.2kbits/frame= 1096 fps= 25 q=31.0 size=    3480kB time=00:00:43.84 bitrate= 650.3kbits/frame= 1109 fps= 25 q=31.0 size=    3532kB time=00:00:44.36 bitrate= 652.3kbits/frame= 1122 fps= 25 q=31.0 size=    3579kB time=00:00:44.88 bitrate= 653.3kbits/frame= 1135 fps= 25 q=31.0 size=    3615kB time=00:00:45.40 bitrate= 652.2kbits/frame= 1148 fps= 25 q=31.0 size=    3660kB time=00:00:45.92 bitrate= 652.9kbits/frame= 1160 fps= 25 q=31.0 size=    3704kB time=00:00:46.40 bitrate= 654.0kbits/frame= 1173 fps= 25 q=31.0 size=    3762kB time=00:00:46.92 bitrate= 656.7kbits/frame= 1187 fps= 25 q=24.8 size=    3834kB time=00:00:47.48 bitrate= 661.4kbits/frame= 1200 fps= 25 q=31.0 size=    3883kB time=00:00:48.00 bitrate= 662.6kbits/frame= 1212 fps= 25 q=31.0 size=    3926kB time=00:00:48.48 bitrate= 663.4kbits/frame= 1226 fps= 25 q=31.0 size=    3994kB time=00:00:49.04 bitrate= 667.2kbits/frame= 1239 fps= 25 q=31.0 size=    4057kB time=00:00:49.56 bitrate= 670.6kbits/frame= 1252 fps= 25 q=31.0 size=    4085kB time=00:00:50.08 bitrate= 668.2kbits/frame= 1265 fps= 25 q=31.0 size=    4121kB time=00:00:50.60 bitrate= 667.1kbits/frame= 1278 fps= 25 q=31.0 size=    4161kB time=00:00:51.12 bitrate= 666.8kbits/frame= 1291 fps= 25 q=31.0 size=    4186kB time=00:00:51.64 bitrate= 664.1kbits/frame= 1304 fps= 25 q=31.0 size=    4212kB time=00:00:52.16 bitrate= 661.5kbits/frame= 1317 fps= 25 q=31.0 size=    4251kB time=00:00:52.68 bitrate= 661.1kbits/frame= 1330 fps= 25 q=31.0 size=    4275kB time=00:00:53.20 bitrate= 658.2kbits/frame= 1343 fps= 25 q=24.8 size=    4314kB time=00:00:53.72 bitrate= 657.8kbits/frame= 1356 fps= 25 q=31.0 size=    4349kB time=00:00:54.24 bitrate= 656.9kbits/frame= 1369 fps= 25 q=31.0 size=    4375kB time=00:00:54.76 bitrate= 654.5kbits/frame= 1382 fps= 25 q=31.0 size=    4400kB time=00:00:55.28 bitrate= 652.0kbits/frame= 1394 fps= 25 q=31.0 size=    4426kB time=00:00:55.76 bitrate= 650.2kbits/frame= 1406 fps= 25 q=31.0 size=    4466kB time=00:00:56.24 bitrate= 650.6kbits/frame= 1418 fps= 25 q=31.0 size=    4509kB time=00:00:56.72 bitrate= 651.3kbits/frame= 1431 fps= 25 q=31.0 size=    4557kB time=00:00:57.24 bitrate= 652.2kbits/frame= 1439 fps= 25 q=24.8 Lsize=    4599kB time=00:00:57.56 bitrate= 654.5kbits/s
video:4576kB audio:0kB subtitle:0 global headers:0kB muxing overhead 0.495857%
Received signal 2: terminating.
slick@slick-CQ5504F ~/Downloads $ ls output.flvoutput.flv
slick@slick-CQ5504F ~/Downloads $