But here I didn't find such because the video is usually delayed already so the wirelesss delay usually is nearly the same and we have close enough sync.
How about the usual optical heaphone kit? Example at http://www.amazon.com/Sennheiser-Wireless-Headphones-FiiO-Connection/dp/B00BVUAMYW
We have a UE55JS9000 TV and the documentation says that Bluetooth headphones are supported. However looking for such wireless headphones gives me the impression that there may be a delay when watching movies and that other types of wireless headphones may be better. What wireless headphones would you recommend?