root@ip-10-0-0-196:/home/ubuntu/prav# ffmpeg -i BigBuckBunny.mp4 -vcodec libx264 -vprofile main -preset slow -b:v 1024k -maxrate 400k -bufsize 800k -vf "ass=bigbuck.ass" -vf scale=-1:480 -threads 0 -acodec libfaac bigbuckbunny_sub.mp4
ffmpeg version git-2012-09-26-299c0b3 Copyright (c) 2000-2012 the FFmpeg developers
  built on Sep 26 2012 09:07:15 with gcc 4.6.1 (Ubuntu/Linaro 4.6.1-9ubuntu3)
  configuration: --enable-gpl --enable-libfaac --enable-libass --enable-libfdk-aac --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-librtmp --enable-libtheora --enable-libvorbis --enable-libvpx --enable-x11grab --enable-libx264 --enable-nonfree --enable-version3
  libavutil      51. 73.101 / 51. 73.101
  libavcodec     54. 59.100 / 54. 59.100
  libavformat    54. 28.101 / 54. 28.101
  libavdevice    54.  2.101 / 54.  2.101
  libavfilter     3. 17.100 /  3. 17.100
  libswscale      2.  1.101 /  2.  1.101
  libswresample   0. 15.100 /  0. 15.100
  libpostproc    52.  0.100 / 52.  0.100
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x2a22260] multiple edit list entries, a/v desync might occur, patch welcome
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'BigBuckBunny.mp4':
  Metadata:
    major_brand     : mp42
    minor_version   : 0
    compatible_brands: mp42isom
    creation_time   : 2012-09-24 08:04:09
    encoder         : mp4creator 1.6.1d
  Duration: 00:01:30.04, start: 0.000000, bitrate: 872 kb/s
    Stream #0:0(eng): Video: h264 (Constrained Baseline) (avc1 / 0x31637661), yuv420p, 1024x768 [SAR 1:1 DAR 4:3], 744 kb/s, 25 fps, 25 tbr, 90k tbn, 50 tbc
    Metadata:
      creation_time   : 2012-09-24 08:04:09
    Stream #0:1(eng): Audio: aac (mp4a / 0x6134706D), 44100 Hz, stereo, s16, 126 kb/s
    Metadata:
      creation_time   : 2012-09-24 08:04:09
File 'bigbuckbunny_sub.mp4' already exists. Overwrite ? [y/N] y
max bitrate less than average bitrate, assuming CBR
[libx264 @ 0x2a33600] using SAR=1/1
[libx264 @ 0x2a33600] using cpu capabilities: MMX2 SSE2Fast SSSE3 FastShuffle SSE4.2
[libx264 @ 0x2a33600] profile Main, level 3.0
[libx264 @ 0x2a33600] 264 - core 128 r2 198a7ea - H.264/MPEG-4 AVC codec - Copyleft 2003-2012 - http://www.videolan.org/x264.html - options: cabac=1 ref=5 deblock=1:0:0 analyse=0x1:0x111 me=umh subme=8 psy=1 psy_rd=1.00:0.00 mixed_ref=1 me_range=16 chroma_me=1 trellis=1 8x8dct=0 cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=-2 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=2 b_bias=0 direct=3 weightb=1 open_gop=0 weightp=2 keyint=250 keyint_min=25 scenecut=40 intra_refresh=0 rc_lookahead=50 rc=cbr mbtree=1 bitrate=1024 ratetol=1.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 vbv_maxrate=1024 vbv_bufsize=800 nal_hrd=none ip_ratio=1.40 aq=1:1.00
Output #0, mp4, to 'bigbuckbunny_sub.mp4':
  Metadata:
    major_brand     : mp42
    minor_version   : 0
    compatible_brands: mp42isom
    encoder         : Lavf54.28.101
    Stream #0:0(eng): Video: h264 ([33][0][0][0] / 0x0021), yuv420p, 640x480 [SAR 1:1 DAR 4:3], q=-1--1, 1024 kb/s, 25 tbn, 25 tbc
    Metadata:
      creation_time   : 2012-09-24 08:04:09
    Stream #0:1(eng): Audio: aac ([64][0][0][0] / 0x0040), 44100 Hz, stereo, s16, 128 kb/s
    Metadata:
      creation_time   : 2012-09-24 08:04:09
Stream mapping:
  Stream #0:0 -> #0:0 (h264 -> libx264)
  Stream #0:1 -> #0:1 (aac -> libfaac)
Press [q] to stop, [?] for help
[libx264 @ 0x2a33600] max bitrate less than average bitrate, assuming CBR
frame= 2251 fps= 67 q=-1.0 Lsize=   11360kB time=00:01:30.00 bitrate=1034.1kbits/s
video:9879kB audio:1407kB subtitle:0 global headers:0kB muxing overhead 0.661949%
[libx264 @ 0x2a33600] frame I:17    Avg QP:11.88  size: 59343
[libx264 @ 0x2a33600] frame P:719   Avg QP:15.67  size: 10013
[libx264 @ 0x2a33600] frame B:1515  Avg QP:21.19  size:  1259
[libx264 @ 0x2a33600] consecutive B-frames:  6.1%  8.3% 12.4% 73.2%
[libx264 @ 0x2a33600] mb I  I16..4: 34.8%  0.0% 65.2%
[libx264 @ 0x2a33600] mb P  I16..4:  1.7%  0.0%  2.8%  P16..4: 24.5% 14.4% 12.2%  0.0%  0.0%    skip:44.5%
[libx264 @ 0x2a33600] mb B  I16..4:  0.3%  0.0%  0.3%  B16..8: 23.1%  3.8%  1.2%  direct: 1.9%  skip:69.3%  L0:38.0% L1:49.6% BI:12.3%
[libx264 @ 0x2a33600] direct mvs  spatial:99.7% temporal:0.3%
[libx264 @ 0x2a33600] coded y,uvDC,uvAC intra: 63.0% 72.3% 63.2% inter: 11.1% 12.2% 4.2%
[libx264 @ 0x2a33600] i16 v,h,dc,p: 48% 28%  7% 17%
[libx264 @ 0x2a33600] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 12% 19%  9%  7% 10% 10% 11% 10% 12%
[libx264 @ 0x2a33600] i8c dc,h,v,p: 47% 29% 13% 12%
[libx264 @ 0x2a33600] Weighted P-Frames: Y:3.6% UV:2.1%
[libx264 @ 0x2a33600] ref P L0: 72.7%  9.9% 11.4%  3.4%  2.2%  0.5%  0.0%
[libx264 @ 0x2a33600] ref B L0: 89.7%  7.8%  2.0%  0.4%
[libx264 @ 0x2a33600] ref B L1: 94.5%  5.5%
[libx264 @ 0x2a33600] kb/s:898.75