ffmpeg amerge fail

ffmpeg -v info -y -i $1 -i $2 -filter_complex "
 [0:0] pad='max(240,iw):max(180,ih):0:0', scale='240:180', pad='480:180:240:0' [left];
 [1:0] pad='max(240,iw):max(180,ih):0:0', scale='240:180' [right];
 [left] [right] overlay [out0];
 [0:1] [1:1] amerge [out1]" \
-codec:a libfaac  -ar 44100 \
-codec:v libx264 -preset medium -r 24 \
-map [out0] -map [out1] $3


ffmpeg version 1.1.git-716dbc7 Copyright (c) 2000-2013 the FFmpeg developers
  built on Jun  8 2013 15:27:14 with Apple clang version 3.1 (tags/Apple/clang-318.0.61) (based on LLVM 3.1svn)
  configuration: --prefix=/opt/local --enable-swscale --enable-avfilter --enable-libmp3lame --enable-libvorbis --enable-libopus --enable-libtheora --enable-libschroedinger --enable-libopenjpeg --enable-libmodplug --enable-libvpx --enable-libspeex --enable-libfreetype --mandir=/opt/local/share/man --enable-shared --enable-pthreads --cc=/usr/bin/clang --arch=x86_64 --enable-yasm --enable-gpl --enable-postproc --enable-libx264 --enable-libxvid --enable-nonfree --enable-libfaac
  libavutil      52. 34.100 / 52. 34.100
  libavcodec     55. 12.102 / 55. 12.102
  libavformat    55.  8.102 / 55.  8.102
  libavdevice    55.  2.100 / 55.  2.100
  libavfilter     3. 73.100 /  3. 73.100
  libswscale      2.  3.100 /  2.  3.100
  libswresample   0. 17.102 /  0. 17.102
  libpostproc    52.  3.100 / 52.  3.100
[flv @ 0x7fdf5a83d800] max_analyze_duration 5000000 reached at 5014000 microseconds
Input #0, flv, from 'one_.flv':
  Metadata:
    creationdate    : Thu Jun 13 17:00:40
    encoder         : Lavf55.8.102
  Duration: 00:00:10.12, start: 0.000000, bitrate: 51 kb/s
    Stream #0:0: Video: flv1, yuv420p, 320x240, 200 kb/s, 1k tbr, 1k tbn, 1k tbc
    Stream #0:1: Audio: aac, 22050 Hz, mono, fltp, 128 kb/s
[flv @ 0x7fdf5a840200] max_analyze_duration 5000000 reached at 5014000 microseconds
Input #1, flv, from 'two_.flv':
  Metadata:
    creationdate    : Thu Jun 13 17:00:40
    encoder         : Lavf55.8.102
  Duration: 00:00:09.94, start: 0.000000, bitrate: 51 kb/s
    Stream #1:0: Video: flv1, yuv420p, 320x240, 200 kb/s, 1k tbr, 1k tbn, 1k tbc
    Stream #1:1: Audio: aac, 22050 Hz, mono, fltp, 128 kb/s
[Parsed_amerge_6 @ 0x7fdf5a42d1a0] No channel layout for input 1
[Parsed_amerge_6 @ 0x7fdf5a42d1a0] Input channel layouts overlap: output layout will be determined by the number of distinct input channels
[libx264 @ 0x7fdf5a8d9e00] using cpu capabilities: none!
[libx264 @ 0x7fdf5a8d9e00] profile High, level 1.3
[libx264 @ 0x7fdf5a8d9e00] 264 - core 129 - 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=-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=1 b_bias=0 direct=1 weightb=1 open_gop=0 weightp=2 keyint=250 keyint_min=24 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 'out.mp4':
  Metadata:
    creationdate    : Thu Jun 13 17:00:40
    encoder         : Lavf55.8.102
    Stream #0:0: Video: h264 (libx264) ([33][0][0][0] / 0x0021), yuv420p, 480x180, q=-1--1, 12288 tbn, 24 tbc
    Stream #0:1: Audio: aac (libfaac) ([64][0][0][0] / 0x0040), 44100 Hz, stereo, s16, 128 kb/s
Stream mapping:
  Stream #0:0 (flv) -> pad
  Stream #0:1 (aac) -> amerge:in0
  Stream #1:0 (flv) -> pad
  Stream #1:1 (aac) -> amerge:in1
  overlay -> Stream #0:0 (libx264)
  amerge -> Stream #0:1 (libfaac)
Press [q] to stop, [?] for help
Error while decoding stream #1:1: Cannot allocate memory
    Last message repeated 180 times
[swscaler @ 0x7fdf5b017600] Warning: data is not aligned! This can lead to a speedloss
Error while decoding stream #0:1: Cannot allocate memory
    Last message repeated 152 times
frame=   25 fps=0.0 q=-1.0 Lsize=      40kB time=00:00:01.53 bitrate= 213.1kbits/s dup=24 drop=0
video:14kB audio:23kB subtitle:0 global headers:0kB muxing overhead 6.022813%
[libx264 @ 0x7fdf5a8d9e00] frame I:1     Avg QP:19.84  size: 13290
[libx264 @ 0x7fdf5a8d9e00] frame P:6     Avg QP:12.19  size:    33
[libx264 @ 0x7fdf5a8d9e00] frame B:18    Avg QP:12.67  size:    16
[libx264 @ 0x7fdf5a8d9e00] consecutive B-frames:  4.0%  0.0%  0.0% 96.0%
[libx264 @ 0x7fdf5a8d9e00] mb I  I16..4: 21.7% 30.8% 47.5%
[libx264 @ 0x7fdf5a8d9e00] mb P  I16..4:  0.0%  0.0%  0.0%  P16..4:  0.5%  0.1%  0.2%  0.0%  0.0%    skip:99.2%
[libx264 @ 0x7fdf5a8d9e00] mb B  I16..4:  0.0%  0.0%  0.0%  B16..8:  0.2%  0.0%  0.0%  direct: 0.0%  skip:99.8%  L0:100.0% L1: 0.0% BI: 0.0%
[libx264 @ 0x7fdf5a8d9e00] 8x8 transform intra:30.7% inter:100.0%
[libx264 @ 0x7fdf5a8d9e00] coded y,uvDC,uvAC intra: 65.1% 72.9% 67.9% inter: 0.0% 0.1% 0.0%
[libx264 @ 0x7fdf5a8d9e00] i16 v,h,dc,p: 81%  1% 18%  0%
[libx264 @ 0x7fdf5a8d9e00] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 14%  9% 14% 11% 12% 11%  6% 10% 12%
[libx264 @ 0x7fdf5a8d9e00] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 30%  9% 17%  8%  8%  9%  6%  8%  7%
[libx264 @ 0x7fdf5a8d9e00] i8c dc,h,v,p: 55% 14% 21% 10%
[libx264 @ 0x7fdf5a8d9e00] Weighted P-Frames: Y:0.0% UV:0.0%
[libx264 @ 0x7fdf5a8d9e00] ref P L0: 80.9% 13.2%  0.0%  5.9%
[libx264 @ 0x7fdf5a8d9e00] ref B L0:  9.1% 90.9%
[libx264 @ 0x7fdf5a8d9e00] kb/s:105.82