I have a project where I included mp4 videos. I've added fade in/outs to these and it works when previewing the movie. When I export to a mp4 file the fade in/outs don't export over. Any ideas?
Andrew, try exporting using different hardware acceleration settings. Go to File>Settings>Program and on the Device Options tab, in the HW acceleration area, put all the droplists onto "CPU" and then try an export.