This film showed up on youtube two weeks ago. It's filmed by a man (I assume it's a man since he refers to the second witness as his wife) who saw a huge flying creature circling the sky. He is saying it's probably a Pterodactyl but this is wrong. The Pterodaktyls went extinct some 65 millions years ago (At the end of the Cretaceous period, the Cretaceous–Tertiary extinction event which wiped out all non-avian dinosaurs and most avian dinosaurs as well, and many other animals, seemed to also take the pterosaurs. Alternatively, most pterosaurs may have been specialised for an ocean-going lifestyle. Consequently, when the Cretaceous–Tertiary extinction event severely affected marine life that most pterosaurs fed on, they went extinct) and it possibility there are living Pterodactyl (or Pterosaurs which is the correct term) is highly unlikely. If there would have been flying Pterosaurs there would have need to be at least a couple of individuals in order to let them breed. And since the average lifetime of a pterosaur was 10-15 year (they reached ful grown size on only one year) where would have to be hundreds of pterosaurs individuals just to keep the species surviving the 20th century. No pterosaur has ever been found dead or been caught.
Is it a bat? I don't think so. There are big bats, fruit bats (also called old world fruit bats, or flying foxes) lives mainly in dense forest in Africa, Asia and Australia. Read more here.
So a mega bat is not a likely explanation. The smaller bats are very common but they are usually not active during the daytime. It's hard to estimate the size of the object but the object is clearly further back then the lamp since they are not in the focus plane. The camera is most likely on auto and it's a bright day so the aperture is probably f11 or f22. At this distance the difference in focus plane indicates the object is much further back than the lamp. Not 1-9 meteres but 25-50 meters. The size of the object is therefore much bigger than a bat.
The wingspan is 2-2,5 meters (maybe even up to 3 meters) and even the biggest fruit bats are not bigger than 1,5 meter in wing span.
I don't think this object is a bat, not an extinct pterosaur but something else.
There was a spotting of a big creature in Austria back in 1992. This clip is also showing something that's not an airplane, not a bird but something else.
I think that it might be an Alp or some other creature. They are extremely shy and live long so there's no need for a big population in order for them to breed. One remaining individual could have stayed hidden in the forest or a cave for hundreds of years.