ffmpeg version N-79081-g7af3f27 Copyright (c) 2000-2016 the FFmpeg developers
  built with gcc 5.2.1 (Ubuntu 5.2.1-22ubuntu2) 20151010
  configuration: --prefix=/root/ffmpeg_build --pkg-config-flags=--static --extra-cflags=-I/root/ffmpeg_build/include --extra-ldflags=-L/root/ffmpeg_build/lib --bindir=/root/bin --enable-gpl --enable-libass --enable-libfdk-aac --enable-libfreetype --enable-libmp3lame --enable-libopus --enable-libtheora --enable-libvorbis --enable-libvpx --enable-libx264 --enable-libx265 --enable-nonfree
  libavutil      55. 19.100 / 55. 19.100
  libavcodec     57. 28.103 / 57. 28.103
  libavformat    57. 28.102 / 57. 28.102
  libavdevice    57.  0.101 / 57.  0.101
  libavfilter     6. 39.102 /  6. 39.102
  libswscale      4.  0.100 /  4.  0.100
  libswresample   2.  0.101 /  2.  0.101
  libpostproc    54.  0.100 / 54.  0.100
[Parsed_color_0 @ 0x315f700] size:320x240 rate:30/1 duration:-1.000000 sar:1/1
Input #0, lavfi, from 'color=s=320x240:r=30:c=red':
  Duration: N/A, start: 0.000000, bitrate: N/A
    Stream #0:0: Video: rawvideo, 1 reference frame (I420 / 0x30323449), yuv420p, 320x240 [SAR 1:1 DAR 4:3], 30 tbr, 30 tbn, 30 tbc
[flv @ 0x319c1e0] audio stream discovered after head already parsed
Input #1, flv, from 'rtmp://localhost/stream/iphone':
  Metadata:
    Server          : NGINX RTMP (github.com/arut/nginx-rtmp-module)
    displayWidth    : 192
    displayHeight   : 144
    fps             : 0
    profile         :
    level           :
  Duration: 00:00:00.00, start: 1.989000, bitrate: N/A
    Stream #1:0: Video: h264 (Baseline), 1 reference frame, yuv420p(tv, smpte170m/bt709/bt709), 144x192 (192x192), 51 kb/s, 30 fps, 30 tbr, 1k tbn, 2k tbc
    Stream #1:1: Audio: aac (LC), 44100 Hz, mono, fltp
[Parsed_scale_0 @ 0x31a0400] w:320 h:240 flags:'bilinear' interl:0
[Parsed_scale_0 @ 0x321a860] w:320 h:240 flags:'bilinear' interl:0
[graph 0 input from stream 1:0 @ 0x3202f20] w:144 h:192 pixfmt:yuv420p tb:1/1000 fr:30/1 sar:0/1 sws_param:flags=2
[graph 0 input from stream 0:0 @ 0x3203200] w:320 h:240 pixfmt:yuv420p tb:1/30 fr:30/1 sar:1/1 sws_param:flags=2
[Parsed_scale_0 @ 0x321a860] w:144 h:192 fmt:yuv420p sar:0/1 -> w:320 h:240 fmt:yuva420p sar:0/1 flags:0x2
[Parsed_overlay_1 @ 0x32046e0] main w:320 h:240 fmt:yuv420p overlay w:320 h:240 fmt:yuva420p eof_action:pass
[Parsed_overlay_1 @ 0x32046e0] [framesync @ 0x321a668] Selected 1/30 time base
[Parsed_overlay_1 @ 0x32046e0] [framesync @ 0x321a668] Sync level 2
[libx264 @ 0x31e3bc0] using SAR=1/1
[libx264 @ 0x31e3bc0] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX
[libx264 @ 0x31e3bc0] profile High, level 1.3
[libx264 @ 0x31e3bc0] 264 - core 148 - H.264/MPEG-4 AVC codec - Copyleft 2003-2016 - 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=3 lookahead_threads=3 sliced_threads=1 slices=3 nr=0 decimate=1 interlaced=0 bluray_compat=0 constrained_intra=0 bframes=0 weightp=2 keyint=250 keyint_min=25 scenecut=40 intra_refresh=0 rc=crf mbtree=0 crf=23.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.40 aq=1:1.00
Output #0, flv, to 'rtmp://localhost/stream/output':
  Metadata:
    encoder         : Lavf57.28.102
    Stream #0:0: Video: h264 (libx264), -1 reference frame ([7][0][0][0] / 0x0007), yuv420p, 320x240 [SAR 1:1 DAR 4:3], q=-1--1, 30 fps, 1k tbn, 30 tbc (default)
    Metadata:
      encoder         : Lavc57.28.103 libx264
    Side data:
      cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: -1
Stream mapping:
  Stream #0:0 (rawvideo) -> overlay:main
  Stream #1:0 (h264) -> scale
  overlay -> Stream #0:0 (libx264)
Press [q] to stop, [?] for help
[flv @ 0x31e2f40] Failed to update header with correct duration.ate=  35.9kbits/s speed=   1x
[flv @ 0x31e2f40] Failed to update header with correct filesize.
frame= 3775 fps= 30 q=18.0 Lsize=     551kB time=00:02:05.83 bitrate=  35.9kbits/s speed=   1x
video:470kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 17.313745%
Input file #0 (color=s=320x240:r=30:c=red):
  Input stream #0:0 (video): 3775 packets read (434880000 bytes); 3775 frames decoded;
  Total: 3775 packets (434880000 bytes) demuxed
Input file #1 (rtmp://localhost/stream/iphone):
  Input stream #1:0 (video): 481 packets read (104417 bytes); 481 frames decoded;
  Input stream #1:1 (audio): 59 packets read (11328 bytes);
  Total: 540 packets (115745 bytes) demuxed
Output file #0 (rtmp://localhost/stream/output):
  Output stream #0:0 (video): 3775 frames encoded; 3775 packets muxed (481369 bytes);
  Total: 3775 packets (481369 bytes) muxed
[libx264 @ 0x31e3bc0] frame I:17    Avg QP: 3.41  size:   839
[libx264 @ 0x31e3bc0] frame P:3758  Avg QP: 4.86  size:   124
[libx264 @ 0x31e3bc0] mb I  I16..4: 88.9%  9.3%  1.8%
[libx264 @ 0x31e3bc0] mb P  I16..4:  0.1%  0.1%  0.0%  P16..4:  2.1%  1.1%  0.6%  0.0%  0.0%    skip:96.1%
[libx264 @ 0x31e3bc0] 8x8 transform intra:21.2% inter:70.7%
[libx264 @ 0x31e3bc0] coded y,uvDC,uvAC intra: 17.4% 16.3% 7.9% inter: 1.1% 1.2% 0.0%
[libx264 @ 0x31e3bc0] i16 v,h,dc,p: 76%  2% 20%  2%
[libx264 @ 0x31e3bc0] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 31% 23% 20%  2%  4%  5%  7%  3%  6%
[libx264 @ 0x31e3bc0] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 27% 34% 15%  2%  5%  5%  5%  2%  5%
[libx264 @ 0x31e3bc0] i8c dc,h,v,p: 85%  9%  5%  1%
[libx264 @ 0x31e3bc0] Weighted P-Frames: Y:0.0% UV:0.0%
[libx264 @ 0x31e3bc0] ref P L0: 82.7%  7.9%  7.0%  2.3%
[libx264 @ 0x31e3bc0] kb/s:30.57
Exiting normally, received signal 2.