@apuk2004 I went down several rabbit holes after your original post where lots of people say they can't get 5.1 through Chromecast while others can and there doesn't seem to be a single reason why!
Looking at your latest post I think it's going to be an error in the app so good luck getting it sorted!
Out of curiosity did you try the Chromecast Gen 3 Dongle with a different smartphone when using the NowTV App ?
Also when watching Netflix through the Sony AV Receiver, i am assuming that Dolby Digital Plus was showing also on the Sony Receiver Display panel ?
I doubt this is relevant, but sometimes a full factory reset on the Google Chromecast works when NowTV is a little flaky or not playing nicely with the NowTV App.
Hopefully somebody from NowTV Technical Dept will figure it out.
Just a quick update to say I've still got this issue. And yeah I tried 3 different phones😞
I think its the NOWTV android app at fault, but maybe only affects BT customers as BOOST works fine on my PS4 and Youview as I can switch between stereo and 5.1 in the NOWTV settings.
Still waiting for an email back from the android app developers.
I think this is an issue with the NowTV app not recognising that you have boost for 5.1 sound if you have bought your pass through BT.
I have exactly the same issue and on the chromecast sound settings page it doesn't allow me to select 5.1 and says 5.1 is only available with boost (even though I have boost from BT).
Thanks for replying and confirming you have the same issue.
Unfortunately I didn't get anywhere with this and have not had a reply from the Now TV android developer or Now TV customer support so the issue remains.
Luckily I have Youview boxes and a PS4 where the boost works fine so I just use them to watch movies and TV shows to get 5.1 surround sound but it's disappointing that the Chromecast 5.1 doesn't work with a Boost pass from BT.
I also have the same issue casting from the NowTV app from an Galaxy S20+ to a Chromecast (Ultra in this case) as a new BT VIP (full package)NowTV customer. I am unable to select 5.1 in the sound options in the app.
I have previousky had 5.1 working with my old S9+ when I was just a direct Now TV customer so the issue seems to be with the android app not correctly recognising the Boost pass through my BT/NowTV account.
The app doesn't 'see' the passes but it does allow me to view the channels on the phone and cast them.
Anyone got any further in resolving this?
The Boost 5.1 does work directly through the NiwTV app on my LG TV. It's the android app which is having the problm
Attached is the screen shot of the account page which is showing that the passes are not present, yet I am able to view and cast correctly (other than use 5.1!). I'm not sure if I'm getting 720 or 1080 casting from the app but suspect 720.
Thanks for posting to say you have the same issue as me and yeah it's still a problem! 😥
Clearly not many people who have NOW TV via BT and are trying to cast have seen this.
If more people contact support or the app developer (see play store for email address) maybe they will do something about it.
For now I just use PS4 (now got a PS5) or Youview boxes to get 5.1 with NOW TV
I`ve emailed the developers and also in contact with the NowTV help.
The `Help` isnt great!!! I`ve provided screenshots and all the background in that I have the passes on my account and that its the APP that does not recognise the BT NowTV pases. They keep giving me standard reponses eg uninstall, reinstall, buy a pass (aaarrgghhh}, turn on 5.1 in sound settings (not possible as it says I don't have a pass!)....all useless as I`ve done all that. Most recently they told me that my wifi and download must be too slow and somehow quoted that I have 4mbps - my network runs at around 100!!
The problem is specifically with the app not recognising the Bt NowTV passes. None are shown in the app (although I can watch the necessary feeds) - the Boost pass is not recognised so is not available.
If any mods or techs read this can you pelase pick it up and do something?? I`m happy to work with you to try and resolve.