Hi, I've been using hitfilm express 2017 on a mac. I've looked in other forums for this, but they all miss the point. In hitfilm the length does not extend or shorten based on content. S you're limited to five minutes, also if you look at the timeline you see that it gets darker after five minutes, which to me means that you only have minutes. Did I not do something right? Or is this just something I have to live with?