7.1 audio

[kirshman 1]

I have the latest emby server running on a nvidia shield.  Then it goes to my roku ultra 2020, to my 7.1 reciever, and then out to the tv and speakers.  My question is on the audio.  When i rip my blurays and 4k blurays to 7.1 aac, the emby server does direct stream vs direct play on my 5.1 aac files.  Any idea why this would be happening?  Do i need a different codec for 7.1, or is this something to do with the emby app on the roku?  Any direction would be great.  Thanks!

[roaku 842]

Rokus have limited multichannel AAC support, depending on the model.

I'm not sure if any of them support 7.1 AAC.

I know they recommend Dolby Digital+ for 7.1, but there's no consumer/open source option to generate 7.1 DD+.

I'm a Roku fan, but I finally bit the bullet and got a Shield recently so I could play my rips with DTS-HD and TrueHD. Based on a web search, it looks like it supports 7.1 AAC too.

https://developer.roku.com/docs/specs/media/streaming-specifications.md

 

Edited January 30, 2022 by roaku

[Happy2Play 9780]

According to the chart it is limited to AAC 2.0.

	AAC	AC3/E-AC3	DTS
Decode/Passthrough	Decode on all devices	Device specific	Passthrough
Sampling Rate	44.1 Khz, 48 Khz	48 Khz	Passthrough
Sample Size	16-bit	16-bit	Passthrough
Bit rate	32-256 Kbps	96-768 Kbps	Passthrough
Number of Channels	2.0	2.0, 5.1, 7.1, Atmos	Passthrough

 

• Multichannel AAC is not supported on all Roku models. Roku TVs, Roku 4, and Roku Ultra set-top-boxes support multichannel decode to PCM stereo.

[RanmaCanada 495]

Yeah if you want 7.1 audio you should be using your Shield as you player, not your server.

[ebr 16178]

Hi.  Did these responses answer your questions?  The limitation is the Roku with AAC.