$ ffmpeg -f alsa -i pulse -f x11grab -show_region 1 -s hd720 -i :0.0+342,1284 -vcodec libx264  ./ssh.mp4
ffmpeg version git-2013-11-09-64f4816 Copyright (c) 2000-2013 the FFmpeg developers
  built on Nov  9 2013 19:16:51 with gcc 4.6 (Ubuntu/Linaro 4.6.3-1ubuntu5)
  configuration: --prefix=/home/ussher/ffmpeg_build --extra-cflags=-I/home/ussher/ffmpeg_build/include --extra-ldflags=-L/home/ussher/ffmpeg_build/lib --bindir=/home/ussher/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. 52.100 / 52. 52.100
  libavcodec     55. 41.100 / 55. 41.100
  libavformat    55. 21.100 / 55. 21.100
  libavdevice    55.  5.100 / 55.  5.100
  libavfilter     3. 90.102 /  3. 90.102
  libswscale      2.  5.101 /  2.  5.101
  libswresample   0. 17.104 /  0. 17.104
  libpostproc    52.  3.100 / 52.  3.100
Guessed Channel Layout for  Input Stream #0.0 : stereo
Input #0, alsa, from 'pulse':
  Duration: N/A, start: 1390474446.318466, bitrate: 1536 kb/s
    Stream #0:0: Audio: pcm_s16le, 48000 Hz, stereo, s16, 1536 kb/s
[x11grab @ 0x1f5d9a0] device: :0.0+342,1284 -> display: :0.0 x: 342 y: 1284 width: 1280 height: 720
[x11grab @ 0x1f5d9a0] shared memory extension found
Input #1, x11grab, from ':0.0+342,1284':
  Duration: N/A, start: 1390474446.365573, bitrate: 883852 kb/s
    Stream #1:0: Video: rawvideo (BGR[0] / 0x524742), bgr0, 1280x720, 883852 kb/s, 29.97 tbr, 1000k tbn, 29.97 tbc
[swscaler @ 0x1f240c0] deprecated pixel format used, make sure you did set range correctly
No pixel format specified, yuv444p for H.264 encoding chosen.
Use -pix_fmt yuv420p for compatibility with outdated media players.
[libx264 @ 0x1f7a120] using cpu capabilities: MMX2 SSE2Fast LZCNT
[libx264 @ 0x1f7a120] profile High 4:4:4 Predictive, level 3.1, 4:4:4 8-bit
[libx264 @ 0x1f7a120] 264 - core 140 r2 1ca7bb9 - H.264/MPEG-4 AVC codec - Copyleft 2003-2013 - http://www.videolan.org/x264.html - options: cabac=1 ref=3 deblock=1:0:0 analyse=0x3:0x113 me=hex subme=7 psy=1 psy_rd=1.00:0.00 mixed_ref=1 me_range=16 chroma_me=1 trellis=1 8x8dct=1 cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=4 threads=6 lookahead_threads=1 sliced_threads=0 nr=0 decimate=1 interlaced=0 bluray_compat=0 constrained_intra=0 bframes=3 b_pyramid=2 b_adapt=1 b_bias=0 direct=1 weightb=1 open_gop=0 weightp=2 keyint=250 keyint_min=25 scenecut=40 intra_refresh=0 rc_lookahead=40 rc=crf mbtree=1 crf=23.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.40 aq=1:1.00
Output #0, mp4, to './ssh.mp4':
  Metadata:
    encoder         : Lavf55.21.100
    Stream #0:0: Video: h264 (libx264) ([33][0][0][0] / 0x0021), yuv444p, 1280x720, q=-1--1, 30k tbn, 29.97 tbc
    Stream #0:1: Audio: aac (libfdk_aac) ([64][0][0][0] / 0x0040), 48000 Hz, stereo, s16, 139 kb/s
Stream mapping:
  Stream #1:0 -> #0:0 (rawvideo -> libx264)
  Stream #0:0 -> #0:1 (pcm_s16le -> libfdk_aac)
Press [q] to stop, [?] for help
frame=  110 fps= 28 q=-1.0 Lsize=     177kB time=00:00:03.68 bitrate= 394.2kbits/s dup=1 drop=0
video:107kB audio:64kB subtitle:0 global headers:0kB muxing overhead 3.717347%
[libx264 @ 0x1f7a120] frame I:1     Avg QP:18.47  size: 34966
[libx264 @ 0x1f7a120] frame P:29    Avg QP:15.28  size:  2283
[libx264 @ 0x1f7a120] frame B:80    Avg QP:16.90  size:    97
[libx264 @ 0x1f7a120] consecutive B-frames:  1.8%  3.6%  0.0% 94.5%
[libx264 @ 0x1f7a120] mb I  I16..4: 26.7% 56.9% 16.4%
[libx264 @ 0x1f7a120] mb P  I16..4:  0.2%  0.1%  0.6%  P16..4:  0.7%  0.1%  0.1%  0.0%  0.0%    skip:98.2%
[libx264 @ 0x1f7a120] mb B  I16..4:  0.0%  0.0%  0.0%  B16..8:  1.4%  0.0%  0.0%  direct: 0.0%  skip:98.5%  L0:62.6% L1:37.3% BI: 0.0%
[libx264 @ 0x1f7a120] 8x8 transform intra:48.1% inter:24.2%
[libx264 @ 0x1f7a120] coded y,u,v intra: 21.7% 2.4% 2.2% inter: 0.1% 0.0% 0.0%
[libx264 @ 0x1f7a120] i16 v,h,dc,p: 67% 32%  1%  0%
[libx264 @ 0x1f7a120] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 25%  2% 73%  0%  0%  0%  0%  0%  0%
[libx264 @ 0x1f7a120] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 35% 22% 20%  3%  3%  4%  4%  4%  5%
[libx264 @ 0x1f7a120] Weighted P-Frames: Y:0.0% UV:0.0%
[libx264 @ 0x1f7a120] ref P L0: 78.3% 10.4%  9.8%  1.5%
[libx264 @ 0x1f7a120] ref B L0: 47.5% 51.7%  0.8%
[libx264 @ 0x1f7a120] ref B L1: 99.4%  0.6%
[libx264 @ 0x1f7a120] kb/s:237.39