I am mac not pc based but as I understand it…
It’s just a case of sync-ing the iPad to iTunes assuming film is in iTunes already. If its in iTunes it will be in correct format. When iPad is connected go to movies tab and make sure film is selected or “all movies” is checked.
If film is outside iTunes it may need converting to mp4 / m4v format – I use handbrake for this but that’s a mac programme. Once converted you drag the file into iTunes or do Import / add to library.
You can do the wifi / dropbox connected to iPad and vlc – I don’t do that as I watch everything in apple compliant formats