Warning: This option is intended for manually updating video files in place and usually not necessary to change. If you want to update metadata of Movie and TV Shows already in iTunes, please have a look at: http://support.iflicksapp.com/entries/20226291-itunes-services-menu

Starting with version 1.4.3 it is now possible to update metadata of video files (m4v/mp4 and mov) in place. As this is not the primary intend of iFlicks, one preference has to be set correctly:

If this option is selected and already compatible videos are processed with the iTunes compatible preset, iFlicks will write all metadata directly to the source video and not create a new file.