MPEG-2 Problems

Greetings,
I've been testing some code for outputting MPEG-2 videos and I've been 
having some problems.  First I checked what was wrong with my code, then 
tried to verify things with the main ffmpeg program.  It seems the 
program does the same.  The problem that I'm getting is that the MPEG-2 
video format that ffmpeg outputs doesn't seem to be correct.  In all of 
the players I've tested with, the duration time of the video is WAY off 
(such as really huge or even a negative number), and others can't even 
play it.  Here's a sample invocation of ffmpeg that I've used:

   ffmpeg -i ffmpeg-sample.mpg test.m2v

The "ffmpeg-sample.mpg" is the file produced by the output_example 
program, but the problem persists with any kind of input video.  I did 
try converting the file with:

   ffmpeg -i ffmpeg-sample.mpg -vcodec mpeg2video test.mpg

This used the mpeg output format and mpeg2video codec, which the regular 
mpeg output format seems to be for MPEG-1.

Anyone else experience this?  Any solutions?  Is the mpeg2video output 
format "complete" or what?  Thanks in advance.  :-)

--
Brian Brice
In order to know recursion, you must first know recursion...