I'm using Media Encoder to convert a bunch of .mov to MPEG2 for DVDs. On my machine, Encoder exports m2v files that are shorter than the original .mov I put in, essentially cutting off the ends of my videos. This isn't happening on my co-workers machine.
As an added note. I tried runnig the files through compressor as well. In that case, all my m2v files ended up having black video added to the end of each file.