mpegvideo parser sometime get wrong stream bit rate which is 0x3FFFF*400.
But maximum bit rate of MPEG2 video is up to 80 Mbps in case 1920x1080 resolution.
When bit rate is 0x3FFFF*400, set bit rate zero.

* Problematic link
https://docs.google.com/open?id=0B6r7ZfWFIypCUkhPa0dyTGdFSE0Signed-off-by: Michael Niedermayer <michaelni@gmx.at>