Trying to convert a bunch of jpegs into a movie

Question

Trying to convert a bunch of jpegs into a movie

I have 28,000 images that I need to convert to a movie. I tried

mencoder mf://*.jpg -mf w=640:h=480:fps=30:type=jpg -ovc lavc -lavcopts vcodec=msmpeg4v2 -nosound -o ../output-msmpeg4v2.avi

But he seems crappy at 7500 frames.

Files are called webcam_2007-04-16_070804.jpg webcam_2007-04-16_071004.jpg webcam_2007-04-16_071204.jpg webcam_2007-04-16_071404.jpg Until March 2008.

Is there any other way to pass file names to mencoder so that it does not stop to pieces?

MEncoder 2:1.0~rc2-0ubuntu13 (C) 2000-2007 MPlayer Team
CPU: Intel(R) Pentium(R) 4 CPU 2.40GHz (Family: 15, Model: 2, Stepping: 7)
CPUflags: Type: 15 MMX: 1 MMX2: 1 3DNow: 0 3DNow2: 0 SSE: 1 SSE2: 1
Compiled with runtime CPU detection.
success: format: 16  data: 0x0 - 0x0
MF file format detected.
[mf] search expr: *.jpg
[mf] number of files: 28617 (114468)
VIDEO:  [IJPG]  640x480  24bpp  30.000 fps    0.0 kbps ( 0.0 kbyte/s)
[V] filefmt:16  fourcc:0x47504A49  size:640x480  fps:30.00  ftime:=0.0333
Opening video filter: [expand osd=1]
Expand: -1 x -1, -1 ; -1, osd: 1, aspect: 0.000000, round: 1
==========================================================================
Opening video decoder: [ffmpeg] FFmpeg libavcodec codec family
Selected video codec: [ffmjpeg] vfm: ffmpeg (FFmpeg MJPEG decoder)
==========================================================================
VDec: vo config request - 640 x 480 (preferred colorspace: Planar YV12)
VDec: using Planar YV12 as output csp (no 3)
Movie-Aspect is 1.33:1 - prescaling to correct movie aspect.
videocodec: libavcodec (640x480 fourcc=3234504d [MP42])
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.
Pos: 251.3s   7539f ( 0%) 47.56fps Trem:   0min   0mb  A-V:0.000 [1202:0]
Flushing video frames.
Writing index...
Writing header...
ODML: Aspect information not (yet?) available or unspecified, not writing vprp header.

Video stream: 1202.480 kbit/s  (150310 B/s)  size: 37772908 bytes  251.300 secs  7539     frames