I have a JVC camcorder with a SDHC memory card in it. I have a imac 10,1 with the 28" (i think) screen. I can not for the life of me figure out how to burn my home movies to a disc? I first bought Verbatim 16x 4.7GB disc and when I inserted the disc it would make some noises and after about 30 seconds or so it would spit it back out? I read somewhere that a 16x speed may not work so I bought Sony DVD-R disc that say 1-16x and the disc stay in longer but will pop out after everything is said and done. What do I need to do to burn my movies to a DVD? I have idvd and imovie. Also the file size seems very large per clip. If a dvd-r only holds 4.7GB then a 6min movie file is close to that?