C:\> ffmpeg  -i infile.mpg -vcodec libx264 -b:v 1400k -v
f scale=624:352 -preset fast -threads 0 -acodec libvo_aacenc -ab 192k outfile.mp4
ffmpeg version N-34704-g985e768, Copyright (c) 2000-2011 the FFmpeg developers
  built on Nov 11 2011 01:46:59 with gcc 4.6.2
  configuration: --enable-gpl --enable-version3 --disable-w32threads --enable-ru
ntime-cpudetect --enable-avisynth --enable-bzlib --enable-frei0r --enable-libope
ncore-amrnb --enable-libopencore-amrwb --enable-libfreetype --enable-libgsm --en
able-libmp3lame --enable-libopenjpeg --enable-librtmp --enable-libschroedinger -
-enable-libspeex --enable-libtheora --enable-libvo-aacenc --enable-libvo-amrwben
c --enable-libvorbis --enable-libvpx --enable-libx264 --enable-libxavs --enable-
libxvid --enable-zlib
  libavutil    51. 24. 1 / 51. 24. 1
  libavcodec   53. 31. 0 / 53. 31. 0
  libavformat  53. 20. 0 / 53. 20. 0
  libavdevice  53.  4. 0 / 53.  4. 0
  libavfilter   2. 47. 2 /  2. 47. 2
  libswscale    2.  1. 0 /  2.  1. 0
  libpostproc  51.  2. 0 / 51.  2. 0
[mpeg @ 01B58BC0] max_analyze_duration 5000000 reached at 5005000
Input #0, mpeg, from 'WWE.Falls.Count.Anywhere.Disc1.mpg':
  Duration: 02:08:04.25, start: 0.200000, bitrate: 7024 kb/s
    Stream #0:0[0x1e0]: Video: mpeg2video (Main), yuv420p, 720x480 [SAR 32:27 DA
R 16:9], 9800 kb/s, 29.97 fps, 29.97 tbr, 90k tbn, 59.94 tbc
    Stream #0:1[0x80]: Audio: ac3, 48000 Hz, 5.1(side), s16, 448 kb/s
File 'E:\xampp\htdocs\dvd\Falls.Count.Anywhere.2012.DVDRip\cd1.mp4' already
exists. Overwrite ? [y/N] y
w:720 h:480 pixfmt:yuv420p tb:1/1000000 sar:32/27 sws_param:
[scale @ 03CC15C0] w:720 h:480 fmt:yuv420p -> w:624 h:352 fmt:yuv420p flags:0x4
[libx264 @ 03DA1960] using SAR=352/351
[libx264 @ 03DA1960] using cpu capabilities: MMX2 SSE2Fast SSSE3 Cache64
[libx264 @ 03DA1960] profile High, level 3.0
[libx264 @ 03DA1960] 264 - core 118 r2085 8a62835 - H.264/MPEG-4 AVC codec - Cop
yleft 2003-2011 - http://www.videolan.org/x264.html - options: cabac=1 ref=2 deb
lock=1:0:0 analyse=0x3:0x113 me=hex subme=6 psy=1 psy_rd=1.00:0.00 mixed_ref=1 m
e_range=16 chroma_me=1 trellis=1 8x8dct=1 cqm=0 deadzone=21,11 fast_pskip=1 chro
ma_qp_offset=-2 threads=6 sliced_threads=0 nr=0 decimate=1 interlaced=0 bluray_c
ompat=0 constrained_intra=0 bframes=3 b_pyramid=2 b_adapt=1 b_bias=0 direct=1 we
ightb=1 open_gop=0 weightp=1 keyint=250 keyint_min=25 scenecut=40 intra_refresh=
0 rc_lookahead=30 rc=abr mbtree=1 bitrate=1400 ratetol=1.0 qcomp=0.60 qpmin=0 qp
max=69 qpstep=4 ip_ratio=1.40 aq=1:1.00
[libvo_aacenc @ 037F6EE0] Unable to set encoding parameters
Output #0, mp4, to 'E:\xampp\htdocs\dvd\WWE.Falls.Count.Anywhere.2012.DVDRip\cd1
.mp4':
    Stream #0:0: Video: h264, yuv420p, 624x352 [SAR 352:351 DAR 16:9], q=-1--1,
1400 kb/s, 90k tbn, 29.97 tbc
    Stream #0:1: Audio: aac, 48000 Hz, 5.1(side), s16, 192 kb/s
Stream mapping:
  Stream #0:0 -> #0:0 (mpeg2video -> libx264)
  Stream #0:1 -> #0:1 (ac3 -> libvo_aacenc)
Error while opening encoder for output stream #0:1 - maybe incorrect parameters
such as bit_rate, rate, width or height