This question may arise if you are using external media, perhaps portable hard drives or USB ‘thumb’ drives. These are commonly prepared using the FAT32 file system, which does not support files larger than 4GB.
As video files will often exceed this size, FAT32 is not very suitable for use in that context. You should reformat these drives using the NTFS system to eliminate this limitation (or you might consider transferring larger files to TriCaster over a network connection).
For more information please download the entire document at new.tk/rt-m