Originally posted by Apapukas How do you know that it is false?
Well, the video is posted by Pentaxian1, which is Pentax. They even have some "making of" videos posted, for some of their other stories.
PENTAX A RICOH COMPANY - YouTube
There are some other clues. Go to 4:33, where the garage manager says that his daughter surreptitiously posted a video on YouTube. Note the little Pentax logo on the top right of the screen capture.
Yes, there really is an actual video clip planted on You Tube for real, called "Garage Ballerina" by AnnBele75. But read the comments there. Another clue is that the name of the garage manager's daughter, as shown in The Letter, is shown spelled a little differently, as AnnBelle75. So this was not a true screen capture.
There were some previous threads on this subject when the video was first posted, but I can't find them. (Argh, the PF search engine!) Anyhow, I think the consensus was that The Letter was very well done indeed.
Other clues ... there is no parking garage at 346 East 55th Street in NYC as shown at 4:50.