ffmpeg

"C:\ffmpeg"  -i "rtmp://ip/room_5280/90 live=1" -s 250x186 -r 6 c:\tmp\5280\frame%d.jpg


C:\>"E:\wwwroot\base64Player\ffmpeg"  -i "rtmp://ip/mygirl/room_4738
/23 live=1" -s 250x186 -r 6 c:\tmp\4738\frame%d.jpg
ffmpeg version N-59742-gd9481dc Copyright (c) 2000-2014 the FFmpeg developers
  built on Jan  9 2014 22:09:55 with gcc 4.8.2 (GCC)
  configuration: --disable-static --enable-shared --enable-gpl --enable-version3
 --disable-w32threads --enable-avisynth --enable-bzlib --enable-fontconfig --ena
ble-frei0r --enable-gnutls --enable-iconv --enable-libass --enable-libbluray --e
nable-libcaca --enable-libfreetype --enable-libgsm --enable-libilbc --enable-lib
modplug --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrw
b --enable-libopenjpeg --enable-libopus --enable-librtmp --enable-libschroedinge
r --enable-libsoxr --enable-libspeex --enable-libtheora --enable-libtwolame --en
able-libvidstab --enable-libvo-aacenc --enable-libvo-amrwbenc --enable-libvorbis
 --enable-libvpx --enable-libwavpack --enable-libx264 --enable-libxavs --enable-
libxvid --enable-zlib
  libavutil      52. 62.100 / 52. 62.100
  libavcodec     55. 47.101 / 55. 47.101
  libavformat    55. 22.103 / 55. 22.103
  libavdevice    55.  5.102 / 55.  5.102
  libavfilter     4.  1.100 /  4.  1.100
  libswscale      2.  5.101 /  2.  5.101
  libswresample   0. 17.104 /  0. 17.104
  libpostproc    52.  3.100 / 52.  3.100
rtmp server sent error
Metadata:
  hasVideo              TRUE
  width                 640.00
  height                480.00
  framerate             15.00
  videocodecid          avc1
  videodatarate         500.00
  hasAudio              FALSE