As a newcome to this forum can I first say I am blown away by how much free technical help is available here. OK pretty new to dual layer disk creation but I have a HD canon cam and as a hobby I make films/dvd's for friends etc free. I create videos in Roxio and export them as MP4 video, OK so it is pretty easy to convert to SD but that's pants compared to HD now the confusing bit how do I get a MP4 video of 6 GB onto a ISO then onto a dual layer I don't have Vob, Ifo and Bup. OK I have commited the cardinal sin of not using verbatin but drone purly for cost (I am senior of 72) before I found imgburn but of course being obedient I have now ordered verbatin DVD+R DL full face printable.