hear sound but no picture

Which app? Not all apps are enabled for airplay, it is up to the developer to do this

If you are using youtube app from google just delete use webapp. Just found out.

Any resolution? Same issue here.

Thanks!

It has already been stated. If an app is not enabled the developer has to do so. If you are having a different issue then please clarify.

I am having an issue with airplay as well. I am trying to play Spartacus from Showtime website on my iPad. It has the Airplay icon available. I click on it and only the audio is playing on my TV....no video. Any suggestions?

As has already been stated not all apps are enabled, the developer needs to do it.