Hi, and thanks in advance to all who help! I have captured 70 hours of DV footage from 50 old 8mm video tapes and need to convert them all into h264, mp4's for playback on a WDTV Live Hub, Media Player. This encoding is taking dozens of hours as well, of extremely processor intensive work, that has the fans on my Macbook Pro, whirring away at full blast. (Early 2011 17" MBP 16GB RAM, 240GB Mercury Extreme Pro 6G SSD. The video files are on a pair of external, bus powered, USB drives.) I am concerned whether relatively continuous encoding, (broken up only by setting up new encodes), may either, degrade performance, (and thereby take more time encoding than it should), or worse, be potentially injurious to my MBP. Are there any regular maintenance procedures that I should perform throughout this process, (such as restarts, shutdowns, resetting pram, Disk Utility, etc.), or is it ok to just let the machine whirr away hours and hours and hours at a time? Thanks again!