gistfile1.txt

meekohi(master) ~/eaboa976hibw$ ffmpeg -i jpegs/%03d.jpg -b:v 2M -g 4 -vframes 70 -s 512:512 -vcodec libvpx spin.webm
ffmpeg version 2.8 Copyright (c) 2000-2015 the FFmpeg developers
  built with Apple LLVM version 7.0.0 (clang-700.0.72)
  configuration: --prefix=/usr/local/Cellar/ffmpeg/2.8 --enable-shared --enable-pthreads --enable-gpl --enable-version3 --enable-hardcoded-tables --enable-avresample --cc=clang --host-cflags= --host-ldflags= --enable-opencl --enable-libx264 --enable-libmp3lame --enable-libvo-aacenc --enable-libxvid --enable-libtheora --enable-libvorbis --enable-libvpx --enable-vda
  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 'jpegs/%03d.jpg':
  Duration: 00:00:02.80, start: 0.000000, bitrate: N/A
    Stream #0:0: Video: mjpeg, gbrap(bt470bg/unknown/unknown), 512x512 [SAR 72:72 DAR 1:1], 25 fps, 25 tbr, 25 tbn, 25 tbc
[libvpx @ 0x7f877a002200] v1.4.0
Output #0, webm, to 'spin.webm':
  Metadata:
    encoder         : Lavf56.40.101
    Stream #0:0: Video: vp8 (libvpx), yuva420p, 512x512 [SAR 1:1 DAR 1:1], q=-1--1, 2000 kb/s, 25 fps, 1k tbn, 25 tbc
    Metadata:
      encoder         : Lavc56.60.100 libvpx
Stream mapping:
  Stream #0:0 -> #0:0 (mjpeg (native) -> vp8 (libvpx))
Press [q] to stop, [?] for help
frame=   70 fps= 43 q=0.0 Lsize=     224kB time=00:00:02.80 bitrate= 655.8kbits/s    
video:210kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 6.865954%



meekohi(master) ~/eaboa976hibw$ ffmpeg -i spin.webm 
ffmpeg version 2.8 Copyright (c) 2000-2015 the FFmpeg developers
  built with Apple LLVM version 7.0.0 (clang-700.0.72)
  configuration: --prefix=/usr/local/Cellar/ffmpeg/2.8 --enable-shared --enable-pthreads --enable-gpl --enable-version3 --enable-hardcoded-tables --enable-avresample --cc=clang --host-cflags= --host-ldflags= --enable-opencl --enable-libx264 --enable-libmp3lame --enable-libvo-aacenc --enable-libxvid --enable-libtheora --enable-libvorbis --enable-libvpx --enable-vda
  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, matroska,webm, from 'spin.webm':
  Metadata:
    encoder         : Lavf56.40.101
  Duration: 00:00:02.80, start: 0.000000, bitrate: 655 kb/s
    Stream #0:0: Video: vp8, yuv420p, 512x512, SAR 1:1 DAR 1:1, 25 fps, 25 tbr, 1k tbn, 1k tbc (default)
    Metadata:
      alpha_mode      : 1
At least one output file must be specified