Hi all sorry if this has been asked and answered before I have search but had no luck.

I bought a new Panasonic 4K tv a few days ago. My question is that when I am trying to watch a video on my Apple TV the video seems to be running ever so slight ahead. It's almost as if the video and audio has been ever so slightly speed up. It's more noticeable at some points than others. I thought it was the hdmi cables but I have just noticed I am having the exact same problem watching a video on YouTube which is already on the TV itself

Any thanks would be appreciated

Chances are that you've got a lot/all of the video processing features turned on and it's over-processing the signal.

What can I do to help this also do I really need new hdmi cables in the shop they tried to get me to pay £60 for some but I'm sure if I needed them I could order from amazon.

There is no way on any known planet in any known universe that a simple bit of copper wire can cause anything even remotely close to what you describe.

Shops like Currys will try and con you into buying an 80 quid HDMI lead because they make £79.99 profit on it (well maybe not that much, £79.98 maybe ). That is the ONLY reason they try to get to you to buy these cables. They do sod all for the picture quality.

Provided the signal that comes out of the end matches as near exactly as possible what went in then it matters not whether the cable cost 10p or £10,000 quid (and trust me you can spend that much on a cable!) the pictures and audio will be exactly the same.

As for what may be the problem simply go into the menu system on the TV find the Picture settings section and go through all the options available and if any include the words Dynamic or Auto turn them off. This will reduce the image processing to the bare minimum, see what effect that has.

You shouldn't have to turn the picture processing off just to get the audio in sync! Modern TVs are supposed to compensate for the delay caused by picture processing by buffering the audio. If that isn't happening there's something amiss.

Is the audio out of sync when watching the built-in Freeview tuner? What about other external sources - PVRs, BluRay etc?

Based on the description from the first post I'd say that what's being described is Soap Opera Effect rather than an audio sync issue. He said the video and audio seemed to be 'running ahead' like they were speeded up. My read then is that there's artificial frame creation going on which gives an unnatural look to the cadence almost as if the video is running too fast. In short then it's too much picture processing for the source signal. As I recommended in post #2, switch off the picture processing and see what it's like without any of that crap running. It's a damped sight cheaper solution than a £60 HDMI lead, that's for sure

Check that 'Intelligent frame correction' is Low or Off.