How are you getting your surround sound?


I haven't paid attention to home theater in a long time so forgive me if this is a silly question. Is everyone still popping in a Blu-Ray disc to watch a movie if you're wanting to experience the latest in surround sound like Dolby Atmos, DTS, etc.? What are the ways you can get movies now with full audio formats encoded?
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Thanks for the information, I'll check out what's available on Amazon and Apple.
I use an appleTV, i used to use a NvidiaShieldTV wasnt happy. The Apple streams 4K HDR. I down convert to 1080p/HDR, the pic is jaw dropping and distracting Lol. I run an JVC RS400
      (native resolution 1080p). The pic is 100”x42”(2.35:2) AT screen
That sounds awesome! How are you getting your 4K movies on the AppleTV? Trying to determine if most people stream their movies now or still popping in a disc.
Via Apple TV device. Although when traveling I may use my iPad or MacBook connecting directly to HDMI Tv input. 
Is that your question?
I stream from Amazon and HBOMAX mostly, i use an HDFURY To convert down to 1080p but it passes the HDR to my PJ.
Apple decodes audio so ur processor/receiver will show multi ch in. Now On the other hand my Denon receiver shows Dolby Atmos, so I guess it pass’s  Dolby Atmos but not Dolby Digital 5.1