jones@jones-mint-desktop ~ $ ffmpeg -f alsa -itsoffset 00:00:02.000 -ac 2 -i hw:0,0 -f x11grab -s $(xwininfo -root | grep 'geometry' | awk '{print $2;}') -r 10 -i :0.0 -sameq -f mp4 -s wvga -y intro.mp4
ffmpeg version 0.8.5-6:0.8.5-0ubuntu0.12.10.1, Copyright (c) 2000-2012 the Libav developers
  built on Jan 24 2013 14:49:20 with gcc 4.7.2
*** THIS PROGRAM IS DEPRECATED ***
This program is only provided for compatibility and will be removed in a future release. Please use avconv instead.
[alsa @ 0x1b87ba0] Estimating duration from bitrate, this may be inaccurate
Input #0, alsa, from 'hw:0,0':
  Duration: N/A, start: 6283.534793, bitrate: N/A
    Stream #0.0: Audio: pcm_s16le, 48000 Hz, 2 channels, s16, 1536 kb/s
[x11grab @ 0x1b9e5e0] device: :0.0 -> display: :0.0 x: 0 y: 0 width: 1920 height: 1080
[x11grab @ 0x1b9e5e0] shared memory extension  found
[x11grab @ 0x1b9e5e0] Estimating duration from bitrate, this may be inaccurate
Input #1, x11grab, from ':0.0':
  Duration: N/A, start: 1363218726.404389, bitrate: 663552 kb/s
    Stream #1.0: Video: rawvideo, bgra, 1920x1080, 663552 kb/s, 10 tbr, 1000k tbn, 10 tbc
Incompatible pixel format 'bgra' for codec 'libx264', auto-selecting format 'yuv420p'
[buffer @ 0x1b97960] w:1920 h:1080 pixfmt:bgra
[scale @ 0x1b9e520] w:1920 h:1080 fmt:bgra -> w:852 h:480 fmt:yuv420p flags:0x4
[libx264 @ 0x1ba2880] using cpu capabilities: MMX2 SSE2Fast FastShuffle SSEMisalign LZCNT
[libx264 @ 0x1ba2880] profile Main, level 2.2
[libx264 @ 0x1ba2880] 264 - core 123 r2189 35cf912 - H.264/MPEG-4 AVC codec - Copyleft 2003-2012 - http://www.videolan.org/x264.html - options: cabac=1 ref=3 deblock=1:0:0 analyse=0x1:0x111 me=hex subme=7 psy=1 psy_rd=1.00:0.00 mixed_ref=0 me_range=16 chroma_me=1 trellis=1 8x8dct=0 cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=-2 threads=1 sliced_threads=0 nr=0 decimate=1 interlaced=0 bluray_compat=0 constrained_intra=0 bframes=3 b_pyramid=0 b_adapt=1 b_bias=0 direct=1 weightb=0 open_gop=1 weightp=2 keyint=250 keyint_min=10 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=1.25 aq=1:1.00
Output #0, mp4, to 'intro.mp4':
  Metadata:
    encoder         : Lavf53.21.1
    Stream #0.0: Video: libx264, yuv420p, 852x480, q=-1--1, 10 tbn, 10 tbc
    Stream #0.1: Audio: libvo_aacenc, 48000 Hz, 2 channels, s16, 200 kb/s
Stream mapping:
  Stream #1.0 -> #0.0
  Stream #0.0 -> #0.1
Press ctrl-c to stop encoding
[alsa @ 0x1b87ba0] ALSA buffer xrun.   0kB time=10000000000.00 bitrate=   0.0kbits/s dup=19 drop=0
^Cframe=  120 fps= 12 q=25.0 Lsize=     262kB time=7.62 bitrate= 281.8kbits/s dup=19 drop=0
video:71kB audio:186kB global headers:0kB muxing overhead 2.116968%
frame I:1     Avg QP:16.66  size: 63058
[libx264 @ 0x1ba2880] frame P:30    Avg QP:21.79  size:    97
[libx264 @ 0x1ba2880] frame B:89    Avg QP:26.35  size:    63
[libx264 @ 0x1ba2880] consecutive B-frames:  0.8%  0.0%  2.5% 96.7%
[libx264 @ 0x1ba2880] mb I  I16..4: 50.6%  0.0% 49.4%
[libx264 @ 0x1ba2880] mb P  I16..4:  0.0%  0.0%  0.0%  P16..4:  0.6%  0.0%  0.0%  0.0%  0.0%    skip:99.2%
[libx264 @ 0x1ba2880] mb B  I16..4:  0.2%  0.0%  0.0%  B16..8:  0.5%  0.0%  0.0%  direct: 0.0%  skip:99.3%  L0:29.9% L1:70.1% BI: 0.0%
[libx264 @ 0x1ba2880] coded y,uvDC,uvAC intra: 38.9% 30.1% 27.6% inter: 0.0% 0.1% 0.0%
[libx264 @ 0x1ba2880] i16 v,h,dc,p: 55% 42%  1%  3%
[libx264 @ 0x1ba2880] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 17% 54% 10%  2%  3%  2%  5%  2%  6%
[libx264 @ 0x1ba2880] i8c dc,h,v,p: 70% 22%  8%  1%
[libx264 @ 0x1ba2880] Weighted P-Frames: Y:0.0% UV:0.0%
[libx264 @ 0x1ba2880] ref P L0: 88.1%  0.0% 11.0%  0.9%
[libx264 @ 0x1ba2880] ref B L0: 85.8% 14.2%
[libx264 @ 0x1ba2880] kb/s:47.72
Received signal 2: terminating.