Resurrecting an old thread, but since I didn't find any other good answers to this question, I thought I'd provide one.
I had the same issue with a recording from the NBC Sports Network and tried lots of different tools including pvastrumento and mencoder.
What finally did it for me was VLC. I remuxed using the convert/stream option to create a transport stream (MPEG-TS). I just set the video and audio to use the original media, so there was no re-encoding. Sony Vegas Pro 11 was able to import the resulting .ts file.
I had the same issue with a recording from the NBC Sports Network and tried lots of different tools including pvastrumento and mencoder.
What finally did it for me was VLC. I remuxed using the convert/stream option to create a transport stream (MPEG-TS). I just set the video and audio to use the original media, so there was no re-encoding. Sony Vegas Pro 11 was able to import the resulting .ts file.