png output

fprobe version 2.4.git Copyright (c) 2007-2014 the FFmpeg developers
  built on Sep 24 2014 21:01:20 with gcc 4.8 (Ubuntu 4.8.2-19ubuntu1)
  configuration: --prefix=/opt/ffmpeg/ffmpeg_build --extra-cflags=-I/opt/ffmpeg/ffmpeg_build/include --extra-ldflags=-L/opt/ffmpeg/ffmpeg_build/lib --bindir=/opt/ffmpeg/bin --enable-gpl --enable-libass --enable-libfdk-aac --enable-libfreetype --enable-libmp3lame --enable-libopus --enable-libtheora --enable-libvorbis --enable-libvpx --enable-libx264 --enable-nonfree
  libavutil      54.  7.101 / 54.  7.101
  libavcodec     56.  1.101 / 56.  1.101
  libavformat    56.  4.103 / 56.  4.103
  libavdevice    56.  1.100 / 56.  1.100
  libavfilter     5.  1.102 /  5.  1.102
  libswscale      3.  1.100 /  3.  1.100
  libswresample   1.  1.100 /  1.  1.100
  libpostproc    53.  1.100 / 53.  1.100
Input #0, png_pipe, from '/media/movies/watermark/wm_720p.png':
  Duration: N/A, bitrate: N/A
    Stream #0:0: Video: png, rgba, 88x27 [SAR 2835:2835 DAR 88:27], 25 tbr, 25 tbn, 25 tbc