[FFmpeg-user] How can I change Log filename for -report option

[Евгений ( Evgeniy )]

Here is something wrong in my script. Ffmpeg reports:

ffmpeg started on 2012-11-09 at 10:48:50
Report written to "ffmpeg-20121109-104850.log"
Command line:
"D:\\ffmpeg\\bin\\ffmpeg" -report "file='E:\\ffmp5.log'"
ffmpeg version N-45739-g04bf2e7 Copyright (c) 2000-2012 the FFmpeg 
developers
  built on Oct 20 2012 00:18:41 with gcc 4.7.2 (GCC)
  configuration: --disable-static --enable-shared --enable-gpl --enable-version3 
 --disable-pthreads --enable-runtime-cpudetect --enable-avisynth --enable-bzlib 
 --enable-frei0r --enable-libass --enable-libopencore-amrnb --enable-libopencore-amrwb 
 --enable-libfreetype --enable-libgsm --enable-libmp3lame --enable-libnut --enable-libopenjpeg 
 --enable-libopus --enable-librtmp --enable-libschroedinger --enable-libspeex 
 --enable-libtheora --enable-libutvideo --enable-libvo-aacenc --enable-libvo-amrwbenc 
 --enable-libvorbis --enable-libvpx --enable-libx264 --enable-libxavs --enable-libxvid 
 --enable-zlib
  libavutil      51. 76.100 / 51. 76.100
  libavcodec     54. 67.100 / 54. 67.100
  libavformat    54. 33.100 / 54. 33.100
  libavdevice    54.  3.100 / 54.  3.100
  libavfilter     3. 19.103 /  3. 19.103
  libswscale      2.  1.101 /  2.  1.101
  libswresample   0. 16.100 /  0. 16.100
  libpostproc    52.  1.100 / 52.  1.100
[NULL @ 0096f8e0] Unable to find a suitable output format for 
'file='E:\ffmp5.log''
file='E:\ffmp5.log': Invalid argument