Roku Ultra and Dolby Atmos
I just bought a Roku Ultra so I can get 4K and Dolby Atmos for my 7.1.4 surround setup. I currently subscribe to Paramount Plus and HBO Max. I was able to get Atmos but then noticed that I was getti...
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The Ultra 4800 does not up-convert anything to Atmos. If your AVR is indicating DD+/Atmos, that's what you're getting from the provider. I watched Godzilla vs. King Kong last night on Max, and did get Atmos, along with Dolby Vision with my 4800.
It's possible that your Ultra didn't HDMI handshake correctly when it powered up. Roku players are designed to remain powered up at all times, and if the power on sequence your equipment uses isn't something that either your AVR or your Roku likes, it might not link up correctly. But I've never had any issues with getting the correct audio and video from either my Rokus or my Shield players, both connected to Yamaha AVRs, most likely because they are always "on".
atc98092 wrote:The Ultra 4800 does not up-convert anything to Atmos. If your AVR is indicating DD+/Atmos, that's what you're getting from the provider. I watched Godzilla vs. King Kong last night on Max, and did get Atmos, along with Dolby Vision with my 4800.
It's possible that your Ultra didn't HDMI handshake correctly when it powered up. Roku players are designed to remain powered up at all times, and if the power on sequence your equipment uses isn't something that either your AVR or your Roku likes, it might not link up correctly. But I've never had any issues with getting the correct audio and video from either my Rokus or my Shield players, both connected to Yamaha AVRs, most likely because they are always "on".
The 4800 does in fact transcode/convert all (non-DTS, depending) audio to the highest detected Dolby level of the connected device in Auto detect mode - if this is DD+/Atmos, then output is DD+/Atmos; if this is MAT 2.x/Atmos, then output is MAT 2.x/Atmos, etc.
StreamerUser wrote:The 4800 does in fact transcode/convert all (non-DTS, depending) audio to the highest detected Dolby level of the connected device in Auto detect mode - if this is DD+/Atmos, then output is DD+/Atmos; if this is MAT 2.x/Atmos, then output is MAT 2.x/Atmos, etc.
Not in my experience. I have never seen any height audio channels, other than soundtracks with DD+/Atmos. Yes, the 4800 will convert some 2 channel tracks to DD+, but it never adds anything further. And for my local media, DTS tracks are also passed though without alteration. Of course, the 4800 still has a video stutter with DTS audio tracks for some reason, but that's unrelated to the audio encoder (at least, I can't think of any way it would affect it).
Of course, I am using auto passthrough for the audio, which is what I believe anyone with an AVR should be using, assuming the AVR has the necessary codec support. But I have used Auto Detect when I first set it up, and still never saw any such encoding.
atc98092 wrote:
StreamerUser wrote:The 4800 does in fact transcode/convert all (non-DTS, depending) audio to the highest detected Dolby level of the connected device in Auto detect mode - if this is DD+/Atmos, then output is DD+/Atmos; if this is MAT 2.x/Atmos, then output is MAT 2.x/Atmos, etc.
Not in my experience. I have never seen any height audio channels, other than soundtracks with DD+/Atmos. Yes, the 4800 will convert some 2 channel tracks to DD+, but it never adds anything further. And for my local media, DTS tracks are also passed though without alteration. Of course, the 4800 still has a video stutter with DTS audio tracks for some reason, but that's unrelated to the audio encoder (at least, I can't think of any way it would affect it).
Of course, I am using auto passthrough for the audio, which is what I believe anyone with an AVR should be using, assuming the AVR has the necessary codec support. But I have used Auto Detect when I first set it up, and still never saw any such encoding.
Height <> Atmos
You might want to increase your experience: Auto detect in the 4800 converts/transcodes all (non-DTS, depending) output to the highest detected Dolby level of the connected device (just like the OP talked about: e.g. (a format of) Atmos in his case - there are all sorts of posts/threads here and elsewhere about it since the 4800 was released half a year ago)
If you pay close attention to the Roku UI information, it even states it for Auto detect (highlight it): "Select 'Auto detect' to automatically convert incoming audio to the best format supported by your equipment. (recommended)"
In fact, its not an upmixer, its a converter/transcoder: it doesnt upmix/channel fill - it just channel/object replicates 1:1 within the multichannel format, with empty channels otherwise (e.g. 2.0 in 5.1, etc; like other such Dolby conversion/transcoding implementations, this prevents upmixing by the AVR/soundbar/etc).
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In fact, its not an upmixer, its a converter/transcoder: it doesnt upmix/channel fill - it just channel/object replicates 1:1 within the multichannel format, with empty channels otherwise (e.g. 2.0 in 5.1, etc; like other such Dolby conversion/transcoding implementations, this prevents upmixing by the AVR/soundbar/etc).
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Hi, That makes sense and indeed as I stated before when I have it on Auto Detect ALL the things I'm viewing my AVR indicates that it Atmos. Even one of the episodes of Star Trek - The Original Series which certainly was not filmed with Atmos. I didn't hear many of the surround speakers so that jives with what you're saying. With Godzilla vs King Kong ALL the surrounds including the height speakers were active.But I'm still confused as to why when I have it on Passthrough my AVR (again the Ultra is DIRECTLY connected to my AVR) says I'm only getting one of the lesser surround modes. I'll post later exactly what I do get.
Thanks to all for your help!
