ffmpeg -framerate 1/5 -i N3_L0_40_RE10000_Leapfrog_3D_%03d.png -c:v libx264  -pix_fmt yuv420p -vf "fps, scale=trunc(iw/2)*2:trunc(ih/2)*2" out.mp4
ffmpeg version 2.8.6 Copyright (c) 2000-2016 the FFmpeg developers
  built with gcc 5.3.0 (Gentoo 5.3.0 p1.1, pie-0.6.5)
  configuration: --prefix=/usr --libdir=/usr/lib64 --shlibdir=/usr/lib64 --mandir=/usr/share/man --enable-shared --cc=x86_64-pc-linux-gnu-gcc --cxx=x86_64-pc-linux-gnu-g++ --ar=x86_64-pc-linux-gnu-ar --optflags='-O2 -pipe -march=native -fomit-frame-pointer' --disable-static --enable-avfilter --enable-avresample --disable-stripping --enable-version3 --disable-indev=v4l2 --disable-outdev=v4l2 --disable-indev=oss --disable-indev=jack --disable-outdev=oss --enable-bzlib --enable-runtime-cpudetect --disable-debug --disable-doc --disable-gnutls --enable-gpl --enable-hardcoded-tables --enable-iconv --disable-lzma --enable-network --disable-openssl --enable-postproc --disable-libsmbclient --enable-ffplay --enable-sdl --disable-vaapi --enable-vdpau --enable-xlib --enable-libxcb --enable-libxcb-shm --enable-libxcb-xfixes --enable-zlib --disable-libcdio --disable-libiec61883 --disable-libdc1394 --disable-libcaca --disable-openal --enable-opengl --disable-libv4l2 --enable-libpulse --disable-libopencore-amrwb --disable-libopencore-amrnb --disable-libfdk-aac --disable-libopenjpeg --disable-libbluray --disable-libcelt --disable-libgme --disable-libgsm --disable-libmodplug --enable-libopus --disable-libquvi --disable-librtmp --disable-libssh --disable-libschroedinger --disable-libspeex --enable-libvorbis --disable-libvpx --disable-libzvbi --disable-libbs2b --disable-libflite --disable-frei0r --disable-libfribidi --disable-fontconfig --disable-ladspa --disable-libass --enable-libfreetype --disable-libsoxr --enable-pthreads --enable-libvo-aacenc --disable-libvo-amrwbenc --enable-libmp3lame --disable-libaacplus --disable-libfaac --disable-libsnappy --disable-libtheora --disable-libtwolame --disable-libwavpack --disable-libwebp --enable-libx264 --disable-libx265 --enable-libxvid --disable-amd3dnow --disable-amd3dnowext --disable-avx --disable-avx2 --disable-fma3 --disable-fma4 --disable-sse42 --disable-xop --cpu=host
  libavutil      54. 31.100 / 54. 31.100
  libavcodec     56. 60.100 / 56. 60.100
  libavformat    56. 40.101 / 56. 40.101
  libavdevice    56.  4.100 / 56.  4.100
  libavfilter     5. 40.101 /  5. 40.101
  libavresample   2.  1.  0 /  2.  1.  0
  libswscale      3.  1.101 /  3.  1.101
  libswresample   1.  2.101 /  1.  2.101
  libpostproc    53.  3.100 / 53.  3.100
Input #0, image2, from 'N3_L0_40_RE10000_Leapfrog_3D_%03d.png':
  Duration: 00:00:10.00, start: 0.000000, bitrate: N/A
    Stream #0:0: Video: png, rgb24(pc), 1414x655 [SAR 3779:3779 DAR 1414:655], 0.20 tbr, 0.20 tbn, 0.20 tbc
File 'out.mp4' already exists. Overwrite ? [y/N] y
[libx264 @ 0x1edb8a0] using SAR=654/655
[libx264 @ 0x1edb8a0] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX AVX2 FMA3 LZCNT BMI2
[libx264 @ 0x1edb8a0] profile High, level 3.2
[libx264 @ 0x1edb8a0] 264 - core 142 - 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=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 'out.mp4':
  Metadata:
    encoder         : Lavf56.40.101
    Stream #0:0: Video: h264 (libx264) ([33][0][0][0] / 0x0021), yuv420p, 1414x654 [SAR 654:655 DAR 1414:655], q=-1--1, 25 fps, 12800 tbn, 25 tbc
    Metadata:
      encoder         : Lavc56.60.100 libx264
Stream mapping:
  Stream #0:0 -> #0:0 (png (native) -> h264 (libx264))
Press [q] to stop, [?] for help
[output stream 0:0 @ 0x1ee5520] 100 buffers queued in output stream 0:0, something may be wrong.
frame=  126 fps= 76 q=-1.0 Lsize=      76kB time=00:00:04.96 bitrate= 125.2kbits/s
video:73kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 3.149627%
[libx264 @ 0x1edb8a0] frame I:1     Avg QP:17.23  size: 61342
[libx264 @ 0x1edb8a0] frame P:32    Avg QP:21.97  size:   118
[libx264 @ 0x1edb8a0] frame B:93    Avg QP:31.33  size:   102
[libx264 @ 0x1edb8a0] consecutive B-frames:  1.6%  0.0%  0.0% 98.4%
[libx264 @ 0x1edb8a0] mb I  I16..4: 27.6% 42.5% 29.9%
[libx264 @ 0x1edb8a0] mb P  I16..4:  0.0%  0.1%  0.0%  P16..4:  0.5%  0.1%  0.0%  0.0%  0.0%    skip:99.2%
[libx264 @ 0x1edb8a0] mb B  I16..4:  0.0%  0.0%  0.0%  B16..8:  2.4%  0.1%  0.0%  direct: 0.0%  skip:97.5%  L0:31.0% L1:69.0% BI: 0.0%
[libx264 @ 0x1edb8a0] 8x8 transform intra:45.3% inter:62.2%
[libx264 @ 0x1edb8a0] coded y,uvDC,uvAC intra: 23.1% 27.2% 26.0% inter: 0.0% 0.0% 0.0%
[libx264 @ 0x1edb8a0] i16 v,h,dc,p: 41% 57%  1%  0%
[libx264 @ 0x1edb8a0] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 44% 16% 38%  0%  0%  1%  0%  1%  0%
[libx264 @ 0x1edb8a0] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 19% 25%  7%  6%  6% 21%  3% 11%  2%
[libx264 @ 0x1edb8a0] i8c dc,h,v,p: 81%  5%  8%  5%
[libx264 @ 0x1edb8a0] Weighted P-Frames: Y:0.0% UV:0.0%
[libx264 @ 0x1edb8a0] ref P L0: 79.1%  5.7% 13.9%  1.3%
[libx264 @ 0x1edb8a0] ref B L0: 88.7%  7.8%  3.5%
[libx264 @ 0x1edb8a0] ref B L1: 98.8%  1.2%
[libx264 @ 0x1edb8a0] kb/s:118.37