Put a mp4 movie 3,3GB big into a 4GB usb 2.0. flash drive. The drive was formatted fat32 and NTFS. In both modes the TV (42PFL 6007k) sees the file but cannot play it. File is not corrupted (it works flawlessly on my laptop).
No problem with mp4 files 0,5GB big. No problem with 0,9GB avi/xvid.
So that is the problem with big files?