Running OSX 10.5. I have a Lacie Thunderbolt 4TB HSF drive enclosure. The Lacie had some bad sectors. Went to migrate all the data to a RAID 10 setup. Some of the H264 mov files that were exported out to clients won't play now in Quicktime they require converting. What would cause this? If this isn't a good place for an issue like this or more detail is required to diagnosis please advise.