pi@raspberrypi:~ $ ~/special/ffmpeg/ffmpeg -report -f alsa -ar 48000 -acodec pcm_s32le -i mic_sv -f v4l2 -thread_queue_size 512 -framerate 20  -probesize 100  -i /dev/video0 -c:v h264_omx -acodec aac  -f flv rtmp://209.85.230.23/live2/xbjs-a3gp-0yvk-ftdg
ffmpeg started on 2017-02-06 at 04:54:57
Report written to "ffmpeg-20170206-045457.log"
ffmpeg version git-2017-02-05-e57fd92 Copyright (c) 2000-2017 the FFmpeg developers
  built with gcc 4.9.2 (Raspbian 4.9.2-10)
  configuration: --extra-cflags=-I/opt/vc/include/IL --enable-nonfree --enable-omx-rpi --logfile=CONFIG.TXT
  libavutil      55. 46.100 / 55. 46.100
  libavcodec     57. 75.100 / 57. 75.100
  libavformat    57. 66.101 / 57. 66.101
  libavdevice    57.  2.100 / 57.  2.100
  libavfilter     6. 73.100 /  6. 73.100
  libswscale      4.  3.101 /  4.  3.101
  libswresample   2.  4.100 /  2.  4.100
Guessed Channel Layout for Input Stream #0.0 : stereo
Input #0, alsa, from 'mic_sv':
  Duration: N/A, start: 1486356898.028244, bitrate: 3072 kb/s
    Stream #0:0: Audio: pcm_s32le, 48000 Hz, stereo, s32, 3072 kb/s
[video4linux2,v4l2 @ 0x2eee250] Dequeued v4l2 buffer contains 3133440 bytes, but 3110400 were expected. Flags: 0x00000004.
Input #1, video4linux2,v4l2, from '/dev/video0':
  Duration: N/A, bitrate: 497664 kb/s
    Stream #1:0: Video: rawvideo (I420 / 0x30323449), yuv420p, 1920x1080, 497664 kb/s, 20 fps, 20 tbr, 1000k tbn, 1000k tbc
[h264_omx @ 0x2ef33b0] Using OMX.broadcom.video_encode
Output #0, flv, to 'rtmp://209.85.230.23/live2/xbjs-a3gp-0yvk-ftdg':
  Metadata:
    encoder         : Lavf57.66.101
    Stream #0:0: Video: h264 (h264_omx) ([7][0][0][0] / 0x0007), yuv420p, 1920x1080, q=2-31, 200 kb/s, 20 fps, 1k tbn, 20 tbc
    Metadata:
      encoder         : Lavc57.75.100 h264_omx
    Stream #0:1: Audio: aac (LC) ([10][0][0][0] / 0x000A), 48000 Hz, stereo, fltp, 128 kb/s
    Metadata:
      encoder         : Lavc57.75.100 aac
Stream mapping:
  Stream #1:0 -> #0:0 (rawvideo (native) -> h264 (h264_omx))
  Stream #0:0 -> #0:1 (pcm_s32le (native) -> aac (native))
Press [q] to stop, [?] for help
[video4linux2,v4l2 @ 0x2eee250] Dequeued v4l2 buffer contains 3133440 bytes, but 3110400 were expected. Flags: 0x00000004.
[alsa @ 0x2ee0760] ALSA buffer xrun.
/dev/video0: Invalid data found when processing input
[alsa @ 0x2ee0760] Thread message queue blocking; consider raising the thread_queue_size option (current value: 8)
[flv @ 0x2ef1e00] Failed to update header with correct duration.te=   0.4kbits/s speed=6.24x
[flv @ 0x2ef1e00] Failed to update header with correct filesize.
frame=    0 fps=0.0 q=0.0 Lsize=      30kB time=00:00:20.28 bitrate=  12.3kbits/s speed=5.11x
video:0kB audio:29kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 6.399591%
[aac @ 0x2ef4b90] Qavg: 317.784
Exiting normally, received signal 2.