I’m a new OSMC user on Raspberry Pi 3. So far I was self-sufficient in resolving any minor issues I’ve found, but I’ve encountered one I cannot find a good solution for and the problem might be that I don’t understand all those Home Theater stuff well yet.
It’s about DD/DTS audio from the movies.
Let’s start with my basic setup and some facts:
OSMC @ Pi3
Samsung TV 6 series - supports Dolby Digital, Dolby Digital Plus, DTS(Core, LBR)
Philips HTL5160 soundbar - no DTS support, only DD
OSMC is connected to TV via HDMI1 (STB) and TV with the soundbar via HDMI2 (ARC). No direct connection between OSMC and soundbar.
Everything works well but the DD/DTS passthrough. When I connect a USB drive to the TV with movies with DD/DTS audio it seems to work correctly. For DD my soundbar displays DD on it’s little screen, so it’s sent correctly via HDMI ARC. For DTS it displays PCM which I guess is because the TV knows what the soundbar cannot decode DTS via HDMI so it decodes it itself and streams as PCM. That’s only my guess, can someone confirm that devices can provide such information via HDMI?
When I stream the same videos via DLNA (either OSMC@Pi or a different DLNA server on my PC) it’s still correct and the soundbar displays DD/PCM respectively.
However when I try the same videos played directly on OSMC it suddenly stops working. When I enable passthrough for DD I simply hear nothing at all. I even physically disconnected the soundbar to take it out of the equation and make sure it’s not an issue here.
Interestingly when I connect OSMC to the soundbar directly and then to TV (this soundbar has a HDMI in, so I can put it between the OSMC and TV) the DD sound is decoded correctly, so it’s not the OSMC being the problem, but rather my TV. I would even stay with that setup, but unfortunately it causes other problems I’d like to avoid.
I’ve done a lot of research past few days, spending hours on trying different configurations, reading the internet and I think I found the reason… my TV simply cannot pass through a 5.1 digital input from HDMI. Here is a good article about it: Our TV Input Tests: Audio Passthrough - RTINGS.com
My TV is not on the list, but I think it’s from 2014, so probably doesn’t support that.
It’s not a big issue now as my soundbar is just a placeholder for a year or so until I change my apartment to sth bigger. I can live without this feature for a while. I have a full 5.1 sound system stored in my home town and plan to use it one day. My amp supports both DD and DTS, so would be nice to pass the audio intact to it.
How do you guys solve this problem? Does it make sense to buy a TV which simply supports it (not so easy to find it in the specs though) or are there any reasonable workarounds?
Sorry for such a long post, but I’m new to Home Theater independent of my PC and I’d like to learn a lesson here. I’ve spent roughly 2 days writing it and checking some stuff I found meanwhile.