Hey all, I'm exporting video from iMovie using "Export using QuickTime" -> "Movie to MPEG-4" and using mp4 (h.264). The only thing I'm not really sure about in this dialog is the "Optimized for:" drop-down. The options are CD/DVD-ROM, Download, and Streaming. I understand that the result is that some optimizations have a higher threshold of bitrate variation than others, but which one should I use for preserving movies just on my hard drive? I'm not sure which to choose between "Download" and "CD/DVD-ROM"? It seems like CD/DVD-ROM would yield the highest quality? But does that instead just keep the bitrate more constant for better playback on DVD players, etc? I'm encoding at ~1.5mbps. Any advice on this would be appreciated.