Sony Vegas Movie Studio Platinum

I just tried rendering from sony vegas with a H264 codec and lame mp3 but the first second or so of video is missing from the result. As in the audio starts and then a second later the video starts.

Anyone any ideas what could be causing this? How do you render from sony vegas / what codec.

Seems like its the first 55 frames are missing im going to try rendering it useing lagarith and then use virtual dub to render to H264 hopefull that works.

Can't help ya, mate. I use AE. I use H.264 with AAC (48KHz) audio.