I got Vegas Movie Studio to be able to do editing work with large video file, specifically cropping beginning and end of video. I have .mkv files, but I am able to convert them to mpeg/mp4 if needed.
The main issue I am seeing is that instead of just 'cutting' the original file, Vegas MS re-renders the entire video and it ends up being much larger than the original.
I have turned on experimental support for .mkv, but it still does not seem to recognize .mkv.
Even working in .mp4, is there a more timely, and more efficient way of cropping existing video files?