Adobe Media Encoder

This is a discussion on Adobe Media Encoder within the Adobe Premiere forums in Adobe Tools category; Greetings! I have a question about Adobe Premiere and its Media Encoder. When trying to export large projects to .mpg, I'm having trouble with the computer shutting down. I've noticed that most of the people I work with simply place the b-roll over finished video. When I suggest that they take the lower video that's not seen in the finished product off the timeline, they say it makes no difference. I think the overall question I'm asking is, when rendering, does Encoder render both lines of video? PG...