video convert error mencoder wmv to avi

~/temp/video# mencoder 0003.WMV -ovc xvid -xvidencopts bitrate=700 -oac mp3lame -o outputfilm.avi

MPlayer SVN-r31918 (C) 2000-2010 MPlayer Team
success: format: 0  data: 0x0 - 0xa58fde
ASF file format detected.
[asfheader] Audio stream found, -aid 1
[asfheader] Video stream found, -vid 2
VIDEO:  [WMV2]  320x240  24bpp  1000.000 fps  298.0 kbps (36.4 kbyte/s)
[V] filefmt:6  fourcc:0x32564D57  size:320x240  fps:1000.000  ftime:=0.0010
==========================================================================
Opening audio decoder: [ffmpeg] FFmpeg/libavcodec audio decoders
AUDIO: 44100 Hz, 2 ch, s16le, 64.0 kbit/4.54% (ratio: 8005->176400)
Selected audio codec: [ffwmav2] afm: ffmpeg (DivX audio v2 (FFmpeg))
==========================================================================
xvid: using library version 1.2.2 (build xvid-1.2.2)
Opening video filter: [expand osd=1]
Expand: -1 x -1, -1 ; -1, osd: 1, aspect: 0.000000, round: 1
==========================================================================
Opening video decoder: [ffmpeg] FFmpeg's libavcodec codec family
Selected video codec: [ffwmv2] vfm: ffmpeg (FFmpeg WMV2/WMV8)
==========================================================================
MP3 audio selected.
Movie-Aspect is undefined - no prescaling applied.
videocodec: XviD (320x240 fourcc=44495658 [XVID])
xvid: par=0/0 (vga11), displayed=320x240, sampled=320x240
xvid: CBR Rate Control -- bitrate=700kbit/s
Writing header...
ODML: vprp aspect is 4:3.
Setting audio delay to 0.000s.
Writing header...
ODML: vprp aspect is 4:3.
Setting audio delay to 0.000s.

118 duplicate frame(s)!
Pos:   0.1s      2f ( 0%)  0.00fps Trem:   0min   1mb  A-V:0.007 [0:0]

Skipping frame!
Pos:   0.1s      3f ( 0%)  0.00fps Trem:   0min   1mb  A-V:0.013 [0:0]

117 duplicate frame(s)!
Pos:   0.2s      4f ( 0%)  0.00fps Trem:   0min   1mb  A-V:0.024 [0:0]