Ok, I checked again and the video that I copied from the USB stick is in there.
However, whenever I copy a video in there (dev_hdd0/video/ )
It doesn't show up on the XMB.
I noticed that that the videos get copied into some folder.
I tried making a folder for my video that I put in there through FTP but it doesn't show up in the XMB.
I just renamed the 4GB+ video so I was the same as one of the videos on the XMB. Even the extension. Then I copied it into the same place as that video. Overwrite the old one. You should also delete any other files on that folder. Only the video should be there.
4GB Video - 4gigvideo.mpeg
PS3 video - xmbps3video.avi
rename 4gigvideo.mpeg to - xmbps3video.avi
Put the NEW xmbps3video.avi into PS3 location - /dev_hdd0/video/fi
Or whatever the OLD xmbps3video.avi used to be in.
You can now play it on the XMB. I hope someone knows a better way to do this.