Marcoss-MacBook-Air:app marcos$ ffmpeg -f webm -i ~/Desktop/test.webm -f webm -i ~/Desktop/test.webm -acodec libvorbis -ab 64k -vcodec libvpx -vb 448k -f webm http://localhost:3000/publish
ffmpeg version N-42091-gf7cba73 Copyright (c) 2000-2012 the FFmpeg developers
  built on Jul  1 2012 01:23:32 with clang 2.1 (tags/Apple/clang-163.7.1)
  configuration: --enable-nonfree --enable-gpl --enable-version3 --enable-postproc --enable-swscale --enable-avfilter --enable-libmp3lame --enable-libvorbis --enable-libtheora --enable-libfaac --enable-libxvid --enable-libx264 --enable-libvpx --enable-hardcoded-tables --enable-shared --enable-pthreads --disable-indevs --cc=clang
  libavutil      51. 63.100 / 51. 63.100
  libavcodec     54. 31.100 / 54. 31.100
  libavformat    54. 14.100 / 54. 14.100
  libavdevice    54.  0.100 / 54.  0.100
  libavfilter     3.  0.100 /  3.  0.100
  libswscale      2.  1.100 /  2.  1.100
  libswresample   0. 15.100 /  0. 15.100
  libpostproc    52.  0.100 / 52.  0.100
Input #0, matroska,webm, from '/Users/marcos/Desktop/test.webm':
  Duration: 00:14:52.63, start: 0.000000, bitrate: 230 kb/s
    Stream #0:0(eng): Video: vp8, yuv420p, 320x240, SAR 1:1 DAR 4:3, 1k fps, 1k tbr, 1k tbn, 1k tbc (default)
    Stream #0:1: Audio: vorbis, 44100 Hz, stereo, s16 (default)
Input #1, matroska,webm, from '/Users/marcos/Desktop/test.webm':
  Duration: 00:14:52.63, start: 0.000000, bitrate: 230 kb/s
    Stream #1:0(eng): Video: vp8, yuv420p, 320x240, SAR 1:1 DAR 4:3, 1k fps, 1k tbr, 1k tbn, 1k tbc (default)
    Stream #1:1: Audio: vorbis, 44100 Hz, stereo, s16 (default)
[tcp @ 0x7faf90403700] TCP connection to localhost:3000 failed: Connection refused
[graph 0 input from stream 0:0 @ 0x7faf90404d00] w:320 h:240 pixfmt:yuv420p tb:1/1000 fr:1000/1 sar:1/1 sws_param:flags=2
[output stream 0:0 @ 0x7faf90404f20] No opaque field provided
[graph 1 input from stream 0:1 @ 0x7faf90405960] tb:1/1000 samplefmt:s16 samplerate:44100 chlayout:0x3
[auto-inserted resampler 0 @ 0x7faf904063a0] chl:stereo fmt:s16 r:44100Hz -> chl:stereo fmt:flt r:44100Hz
[libvpx @ 0x7faf9081d800] v0.9.7-p1
Output #0, webm, to 'http://localhost:3000/publish':
  Metadata:
    encoder         : Lavf54.14.100
    Stream #0:0(eng): Video: vp8, yuv420p, 320x240 [SAR 1:1 DAR 4:3], q=-1--1, 448 kb/s, 1k tbn, 1k tbc (default)
    Stream #0:1: Audio: vorbis, 44100 Hz, stereo, flt, 64 kb/s (default)
Stream mapping:
  Stream #0:0 -> #0:0 (vp8 -> libvpx)
  Stream #0:1 -> #0:1 (vorbis -> libvorbis)
Press [q] to stop, [?] for help
[libvorbis @ 0x7faf9081de00] Que input is backward in time
Que input is backward in timee=      86kB time=00:00:02.93 bitrate= 241.0kbits/s
[libvorbis @ 0x7faf9081de00] Que input is backward in time
    Last message repeated 1 times
[webm @ 0x7faf9081d200] Audio timestamp 5082 < 5089 invalid, cliping
[webm @ 0x7faf9081d200] Audio timestamp 5085 < 5089 invalid, cliping
Que input is backward in timee=     310kB time=00:00:07.80 bitrate= 325.9kbits/s
[libvorbis @ 0x7faf9081de00] Que input is backward in time
    Last message repeated 2 times
Que input is backward in timee=     340kB time=00:00:08.60 bitrate= 324.2kbits/s
[libvorbis @ 0x7faf9081de00] Que input is backward in time
    Last message repeated 2 times
[webm @ 0x7faf9081d200] Audio timestamp 11076 < 11083 invalid, cliping
[webm @ 0x7faf9081d200] Audio timestamp 11079 < 11083 invalid, cliping
Que input is backward in timee=     408kB time=00:00:10.33 bitrate= 323.7kbits/s
[libvorbis @ 0x7faf9081de00] Que input is backward in time
[webm @ 0x7faf9081d200] Audio timestamp 12571 < 12578 invalid, cliping
[webm @ 0x7faf9081d200] Audio timestamp 12574 < 12578 invalid, cliping
Que input is backward in timee=     441kB time=00:00:11.13 bitrate= 324.8kbits/s
[libvorbis @ 0x7faf9081de00] Que input is backward in time
Que input is backward in timee=     513kB time=00:00:11.93 bitrate= 352.0kbits/s
[libvorbis @ 0x7faf9081de00] Que input is backward in time
Que input is backward in timee=     547kB time=00:00:12.86 bitrate= 348.4kbits/s
[libvorbis @ 0x7faf9081de00] Que input is backward in time
Que input is backward in timee=     579kB time=00:00:13.60 bitrate= 348.9kbits/s
[libvorbis @ 0x7faf9081de00] Que input is backward in time
    Last message repeated 3 times
[webm @ 0x7faf9081d200] Audio timestamp 15758 < 15765 invalid, cliping
[webm @ 0x7faf9081d200] Audio timestamp 15761 < 15765 invalid, cliping
[libvorbis @ 0x7faf9081de00] Que input is backward in time
    Last message repeated 1 times
[webm @ 0x7faf9081d200] Audio timestamp 16210 < 16218 invalid, cliping
[webm @ 0x7faf9081d200] Audio timestamp 16213 < 16218 invalid, cliping
[libvorbis @ 0x7faf9081de00] Que input is backward in time
Que input is backward in timee=     675kB time=00:00:15.20 bitrate= 363.9kbits/s
[libvorbis @ 0x7faf9081de00] Que input is backward in time
    Last message repeated 2 times
[webm @ 0x7faf9081d200] Audio timestamp 17627 < 17634 invalid, cliping
[webm @ 0x7faf9081d200] Audio timestamp 17630 < 17634 invalid, cliping
Que input is backward in timee=     709kB time=00:00:16.00 bitrate= 363.1kbits/s
[libvorbis @ 0x7faf9081de00] Que input is backward in time
Que input is backward in timee=     778kB time=00:00:16.80 bitrate= 379.2kbits/s
[libvorbis @ 0x7faf9081de00] Que input is backward in time
Que input is backward in timee=     810kB time=00:00:17.66 bitrate= 375.8kbits/s
[libvorbis @ 0x7faf9081de00] Que input is backward in time
    Last message repeated 2 times
[webm @ 0x7faf9081d200] Audio timestamp 19839 < 19846 invalid, cliping
[webm @ 0x7faf9081d200] Audio timestamp 19841 < 19846 invalid, cliping
[libvorbis @ 0x7faf9081de00] Que input is backward in time
    Last message repeated 4 times
Que input is backward in timee=     878kB time=00:00:19.33 bitrate= 372.0kbits/s
[libvorbis @ 0x7faf9081de00] Que input is backward in time
Que input is backward in timee=     927kB time=00:00:20.20 bitrate= 375.8kbits/s
[libvorbis @ 0x7faf9081de00] Que input is backward in time
    Last message repeated 2 times
[webm @ 0x7faf9081d200] Audio timestamp 22649 < 22657 invalid, cliping
[webm @ 0x7faf9081d200] Audio timestamp 22652 < 22657 invalid, cliping
[webm @ 0x7faf9081d200] Audio timestamp 22651 < 22658 invalid, cliping
[webm @ 0x7faf9081d200] Audio timestamp 22654 < 22658 invalid, cliping
Que input is backward in timee=     963kB time=00:00:21.20 bitrate= 372.1kbits/s
[libvorbis @ 0x7faf9081de00] Que input is backward in time
    Last message repeated 2 times
Que input is backward in timee=    1030kB time=00:00:22.06 bitrate= 382.4kbits/s
[libvorbis @ 0x7faf9081de00] Que input is backward in time
frame=  367 fps= 25 q=0.0 Lsize=    1179kB time=00:00:24.40 bitrate= 395.8kbits/s
video:1018kB audio:146kB subtitle:0 global headers:4kB muxing overhead 0.961128%
Received signal 2: terminating.
Marcoss-MacBook-Air:app marcos$