Something

mencoder "mf://logo*.jpg" -mf fps=25 -o output.avi -ovc lavc -lavcopts vcodec=mpeg4
MEncoder 2:1.0~rc1-0ubuntu13.1 (C) 2000-2006 MPlayer Team
CPU: AMD Athlon(tm) 64 X2 Dual Core Processor 3600+ (Family: 15, Model: 75, Stepping: 2)
CPUflags: Type: 15 MMX: 1 MMX2: 1 3DNow: 1 3DNow2: 1 SSE: 1 SSE2: 1
Compiled with runtime CPU detection.
success: format: 16  data: 0x0 - 0x0
MF file format detected.
[mf] search expr: logo*.jpg
[mf] number of files: 301 (1204)
[demux_mf] file type was not set! trying 'type=jpg'...
VIDEO:  [IJPG]  0x0  24bpp  25.000 fps    0.0 kbps ( 0.0 kbyte/s)
[V] filefmt:16  fourcc:0x47504A49  size:0x0  fps:25.00  ftime:=0.0400
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: [ffmjpeg] vfm: ffmpeg (FFmpeg MJPEG decoder)
==========================================================================
VDec: vo config request - 720 x 576 (preferred colorspace: Planar YV12)
VDec: using Planar YV12 as output csp (no 3)
Movie-Aspect is 1.25:1 - prescaling to correct movie aspect.
videocodec: libavcodec (720x576 fourcc=34504d46 [FMP4])
Writing header...
ODML: Aspect information not (yet?) available or unspecified, not writing vprp header.
Writing header...
ODML: Aspect information not (yet?) available or unspecified, not writing vprp header.
VDec: vo config request - 720 x 576 (preferred colorspace: Planar Y800)
Could not find matching colorspace - retrying with -vf scale...
Opening video filter: [scale]
VDec: using Planar Y800 as output csp (no 7)
Movie-Aspect is 1.25:1 - prescaling to correct movie aspect.
SwScaler: using unscaled gray8 -> yuv420p special converter
Erreur de segmentation (core dumped)