$ ./avectorscope.sh
ffmpeg version 2.6.9 Copyright (c) 2000-2016 the FFmpeg developers
  built with gcc 4.9.2 (Debian 4.9.2-10)
  configuration: --prefix=/usr --extra-cflags='-g -O2 -fstack-protector-strong -Wformat -Werror=format-security ' --extra-ldflags='-Wl,-z,relro' --cc='ccache cc' --enable-shared --enable-libmp3lame --enable-gpl --enable-nonfree --enable-libvorbis --enable-pthreads --enable-libfaac --enable-libxvid --enable-postproc --enable-x11grab --enable-libgsm --enable-libtheora --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libx264 --enable-libspeex --enable-nonfree --disable-stripping --enable-libvpx --enable-libschroedinger --disable-encoder=libschroedinger --enable-version3 --enable-libopenjpeg --enable-librtmp --enable-avfilter --enable-libfreetype --enable-libvo-aacenc --disable-decoder=amrnb --enable-libvo-amrwbenc --enable-libaacplus --libdir=/usr/lib/x86_64-linux-gnu --disable-vda --enable-libbluray --enable-libcdio --enable-gnutls --enable-frei0r --enable-openssl --enable-libass --enable-libopus --enable-fontconfig --enable-libpulse --disable-mips32r2 --disable-mipsdspr1 --disable-mipsdspr2 --enable-libvidstab --enable-libzvbi --enable-avresample --disable-htmlpages --disable-podpages --enable-libutvideo --enable-libfdk-aac --enable-libx265 --enable-libiec61883 --enable-vaapi --enable-libdc1394 --disable-altivec --shlibdir=/usr/lib/x86_64-linux-gnu
  libavutil      54. 20.100 / 54. 20.100
  libavcodec     56. 26.100 / 56. 26.100
  libavformat    56. 25.101 / 56. 25.101
  libavdevice    56.  4.100 / 56.  4.100
  libavfilter     5. 11.102 /  5. 11.102
  libavresample   2.  1.  0 /  2.  1.  0
  libswscale      3.  1.101 /  3.  1.101
  libswresample   1.  1.100 /  1.  1.100
  libpostproc    53.  3.100 / 53.  3.100
[mp3 @ 0xf1a6c0] Estimating duration from bitrate, this may be inaccurate
Input #0, mp3, from 'audio.mp3':
  Metadata:
    title           : Zen Valley
    artist          : Josh Kirsch/Media Right Productions
    album           : YouTube Audio Library
    genre           : Dance & Electronic
    encoder         : Google
  Duration: 00:01:46.32, start: 0.000000, bitrate: 320 kb/s
    Stream #0:0: Audio: mp3, 44100 Hz, stereo, s16p, 320 kb/s
Input #1, png_pipe, from 'nature_1920x1080.png':
  Duration: N/A, bitrate: N/A
    Stream #1:0: Video: png, rgb24, 1920x1080 [SAR 1:1 DAR 16:9], 25 tbr, 25 tbn, 25 tbc
[libx264 @ 0xf3b260] using SAR=1/1
[libx264 @ 0xf3b260] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX
[libx264 @ 0xf3b260] profile High, level 4.0
[libx264 @ 0xf3b260] 264 - core 146 - H.264/MPEG-4 AVC codec - Copyleft 2003-2015 - 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=25 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 'output.mp4':
  Metadata:
    title           : Zen Valley
    artist          : Josh Kirsch/Media Right Productions
    album           : YouTube Audio Library
    genre           : Dance & Electronic
    encoder         : Lavf56.25.101
    Stream #0:0: Video: h264 (libx264) ([33][0][0][0] / 0x0021), yuv420p, 1920x1080 [SAR 1:1 DAR 16:9], q=-1--1, 25 fps, 12800 tbn, 25 tbc (default)
    Metadata:
      encoder         : Lavc56.26.100 libx264
    Stream #0:1: Audio: aac (libfaac) ([64][0][0][0] / 0x0040), 44100 Hz, stereo, s16, 128 kb/s
    Metadata:
      encoder         : Lavc56.26.100 libfaac
Stream mapping:
  Stream #0:0 (mp3) -> avectorscope (graph 0)
  Stream #1:0 (png) -> scale (graph 0)
  overlay (graph 0) -> Stream #0:0 (libx264)
  Stream #0:0 -> #0:1 (mp3 (native) -> aac (libfaac))
Press [q] to stop, [?] for help
frame=    3 fps=0.1 q=-1.0 Lsize=    1699kB time=00:01:46.32 bitrate= 130.9kbits/s dup=0 drop=2655
video:18kB audio:1661kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 1.156952%
[libx264 @ 0xf3b260] frame I:1     Avg QP:12.86  size:  3384
[libx264 @ 0xf3b260] frame P:1     Avg QP:23.92  size: 11069
[libx264 @ 0xf3b260] frame B:1     Avg QP:23.25  size:  3374
[libx264 @ 0xf3b260] consecutive B-frames: 33.3% 66.7%  0.0%  0.0%
[libx264 @ 0xf3b260] mb I  I16..4: 43.6% 55.3%  1.1%
[libx264 @ 0xf3b260] mb P  I16..4:  0.0%  0.2%  2.2%  P16..4:  0.6%  0.1%  0.1%  0.0%  0.0%    skip:96.8%
[libx264 @ 0xf3b260] mb B  I16..4:  0.1%  0.0%  0.0%  B16..8:  1.6%  0.4%  0.6%  direct: 0.4%  skip:96.9%  L0:53.3% L1:43.9% BI: 2.9%
[libx264 @ 0xf3b260] 8x8 transform intra:54.1% inter:3.7%
[libx264 @ 0xf3b260] coded y,uvDC,uvAC intra: 2.8% 1.8% 1.2% inter: 0.8% 0.3% 0.0%
[libx264 @ 0xf3b260] i16 v,h,dc,p: 96%  0%  3%  0%
[libx264 @ 0xf3b260] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 54%  0% 46%  0%  0%  0%  0%  0%  0%
[libx264 @ 0xf3b260] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 33% 18% 33%  4%  3%  3%  3%  2%  3%
[libx264 @ 0xf3b260] i8c dc,h,v,p: 99%  1%  0%  0%
[libx264 @ 0xf3b260] Weighted P-Frames: Y:0.0% UV:0.0%
[libx264 @ 0xf3b260] kb/s:1188.47