Every time I render out a video in Sony Vegas it desyncs the game audio that comes with the original video file, making it impossible for me to render out longer portions without having a too big delay.
The original file is recorded from my XBox 360 via HDMI connection with an AverTV HD capture card and is not out of sync. Even in the preview within Vegas everything seems fine.
However, once the video is rendered out, the audio track that goes with the video itself is out of sync with the video track. The additional audio track I record as commentary and edit into it however is always perfectly in sync, just like I had it in my preview.
I would really appreciate any help for this. Thank you!