Built in Chromecast and BT Sports app sound sync issues

[beelzebomb]

I have a Sony Bravia KD49XE8004BU tv with built in Chromecast. Casting the BT Sports app from my iPad to the tv works - but the sound always ends up ahead of the action; pretty frustrating watching football when a goal is scored as you can imagine. On my old tv using a chromecast dongle, all was fine - so what on earth is going on & how can I fix it?

[beelzebomb]

Can anyone confirm whether this happens with any other apps being used with built-in Chromecast on Sony TVs apart from BT Sport? If it does, then it can probably be concluded that inbuilt Chromecast is the issue - if not, then it's likely the BT App that's at fault.

[beelzebomb]

For info: a reply from BT:

"We can assure you that BT Sport profile is working fine and has no issue on the profile. It is only the broadband connection which need to be supportive for a perfect picture quality and sound synchronization."

[ryan_surrey]

I also suffer with this issue, it's only the BT sports app that seems to be affected, the now TV app works fine casting sky sports.

Tonight I think I counted the audio three seconds ahead of the video whilst watching the champions league... I decided to stop casting and dig in the audio settings during half time. I discoverd an AV sync control that was set to Auto. I set it to Off. On attempting to resume casting, the TV wouldn't connect to the app, so I held the power button on the remote to restart the TV.

It's now 25mins into the second half and the sync seems fine, for fotball commentary anyway.

[beelzebomb]

Funnily enough, mine was almost ok yesterday watching United v Barcelona. I had disconnected everything I could from wi-fi beforehand (phone, computer) as a test to give the maximum to streaming. It wasn’t perfect like everything else I choose to stream this way, but I could live with it. Will see how that pans out. 

[beelzebomb]

Now back to usual - sound ending up about 3 seconds ahead of the picture. Today I had to stop and restart the app 3 times to keep it from getting ridiculous. Doesn’t happen with anything else, only BT Sport app. Well done BT. 

[Marktowno]

Bingo. This worked for me on my Sony TV too. Bugged me for 3yrs!! Turn the AV Setting to "OFF".