ffmpeg version 2.4-   http://johnvansickle.com/ffmpeg/    Copyright (c) 2000-2014 the FFmpeg developers
  built on Sep 15 2014 20:08:17 with gcc 4.8 (Debian 4.8.3-10)
  configuration: --enable-gpl --enable-version3 --disable-shared --disable-debug --enable-runtime-cpudetect --enable-libmp3lame --enable-libx264 --enable-libx265 --enable-libwebp --enable-libspeex --enable-libvorbis --enable-libvpx --enable-libfreetype --enable-fontconfig --enable-libxvid --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libtheora --enable-libvo-aacenc --enable-libvo-amrwbenc --enable-gray --enable-libopenjpeg --enable-libopus --disable-ffserver --enable-libass --enable-gnutls --cc=gcc-4.8
  libavutil      54.  7.100 / 54.  7.100
  libavcodec     56.  1.100 / 56.  1.100
  libavformat    56.  4.101 / 56.  4.101
  libavdevice    56.  0.100 / 56.  0.100
  libavfilter     5.  1.100 /  5.  1.100
  libswscale      3.  0.100 /  3.  0.100
  libswresample   1.  1.100 /  1.  1.100
  libpostproc    53.  0.100 / 53.  0.100
Input #0, png_pipe, from '/home/ubuntu/DOME/base.png':
  Duration: N/A, bitrate: N/A
    Stream #0:0: Video: png, rgb24, 640x640 [SAR 3779:3779 DAR 1:1], 1 tbr, 1 tbn, 1 tbc
Please use -q:a or -q:v, -qscale is ambiguous
File '/home/ubuntu/DOME/test.mp4' already exists. Overwrite ? [y/N] y
[libx264 @ 0x2cbfd60] -qscale is ignored, -crf is recommended.
[libx264 @ 0x2cbfd60] using SAR=1/1
[libx264 @ 0x2cbfd60] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX
[libx264 @ 0x2cbfd60] profile High, level 3.0
[libx264 @ 0x2cbfd60] 264 - core 142 r50 dd79a61 - H.264/MPEG-4 AVC codec - Copyleft 2003-2014 - 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=1 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 '/home/ubuntu/DOME/test.mp4':
  Metadata:
    encoder         : Lavf56.4.101
    Stream #0:0: Video: h264 (libx264) ([33][0][0][0] / 0x0021), yuv420p, 640x640 [SAR 1:1 DAR 1:1], q=-1--1, 25 fps, 12800 tbn, 25 tbc
    Metadata:
      encoder         : Lavc56.1.100 libx264
Stream mapping:
  Stream #0:0 -> #0:0 (png (native) -> h264 (libx264))
Press [q] to stop, [?] for help
/home/ubuntu/DOME/base.png: Input/output error
[mp4 @ 0x2cbed20] Starting second pass: moving the moov atom to the beginning of the file
frame=    2 fps=0.2 q=28.0 Lsize=      10kB time=00:00:00.08 bitrate= 991.1kbits/s dup=0 drop=347
video:9kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 9.103919%
[libx264 @ 0x2cbfd60] frame I:1     Avg QP:21.27  size:  8268
[libx264 @ 0x2cbfd60] frame P:1     Avg QP:19.91  size:   129
[libx264 @ 0x2cbfd60] mb I  I16..4: 27.9% 62.2%  9.9%
[libx264 @ 0x2cbfd60] mb P  I16..4:  0.1%  0.1%  0.0%  P16..4:  3.1%  0.4%  0.2%  0.0%  0.0%    skip:96.1%
[libx264 @ 0x2cbfd60] 8x8 transform intra:62.2%
[libx264 @ 0x2cbfd60] coded y,uvDC,uvAC intra: 26.9% 43.3% 37.8% inter: 0.0% 0.5% 0.0%
[libx264 @ 0x2cbfd60] i16 v,h,dc,p: 69%  8% 20%  2%
[libx264 @ 0x2cbfd60] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 30% 27% 23%  1%  9%  4%  4%  0%  2%
[libx264 @ 0x2cbfd60] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 33% 30% 20%  1%  7%  2%  3%  1%  4%
[libx264 @ 0x2cbfd60] i8c dc,h,v,p: 78% 13%  6%  3%
[libx264 @ 0x2cbfd60] Weighted P-Frames: Y:0.0% UV:0.0%
[libx264 @ 0x2cbfd60] kb/s:839.70