Wetek Hub - 11.0.4 - no passthrough of Dolby TrueHD (Atmos)

O'Brother · December 28, 2023 at 4:59 PM

Hi,

Stable 11.0.4 Wetek Hub image (Note: need to rename the SD image files to dtb.img, kernel.img & kernel.img.md5 for it to boot).

Made sure the video player sync was turned off, ALSA HDMI driver selected, all passthrough options turned on.

Cheers

O'Brother · December 29, 2023 at 5:14 AM

Just confirmed no passthrough DTS-HD / MA either.

(DD+ Atmos, DTS & DD OK)

**chewitt** · December 29, 2023 at 8:21 AM

IIRC the S905 chip in the Hub does not support the HD formats so cannot pass them through. The DD+/TrueHD streams contain a DTS (5.1) core with additional metadata; the core stream provides compatibility with hardware that doesn't support the full format so you still hear something. Note: no need to rename files if following the wiki instructions to create AMLGX "box" SD cards.

O'Brother · December 29, 2023 at 9:13 AM

Quote from chewitt

IIRC the S905 chip in the Hub does not support the HD formats so cannot pass them through. The DD+/TrueHD streams contain a DTS (5.1) core with additional metadata; the core stream provides compatibility with hardware that doesn't support the full format so you still hear something.

No, CoreElec v9.2 was able to passthrough TrusHD/DTS-HD fine on the Hub (I haven't tried the v9 libreELEC) - this was the only reason I originally bought the Hub.

Quote

Note: no need to rename files if following the wiki instructions to create AMLGX "box" SD cards.

I used the specific Wetek Hub image.

Cheers

O'Brother · December 29, 2023 at 10:51 AM

Just confirmed the last LibreELEC v9.0.2 for the WeTek Hub passes both the hidef Dolby/DTS bitstreams. Let me know if want any particular logs etc from the v11 build.

**chewitt** · December 29, 2023 at 12:02 PM

You can share a Kodi debug log after clean boot and playing a couple of non-working things.

O'Brother · December 29, 2023 at 11:24 PM

Log after TrueHD Atmos file playback:

https://paste.libreelec.tv/next-cat.log

Log after DTS-MA file playback:

https://paste.libreelec.tv/trusting-zebra.log

**chewitt** · December 30, 2023 at 5:55 PM

Both logs show that playback starts in 2.0 pass-through then TrueHD/DTS-MA are detected and AESinkALSA renegotiates to output with 7.1 output. Kodi appears to be doing the right thing here. What spec is the HDMI cable?

O'Brother · December 30, 2023 at 10:52 PM

Quote from chewitt

Both logs show that playback starts in 2.0 pass-through then TrueHD/DTS-MA are detected and AESinkALSA renegotiates to output with 7.1 output. Kodi appears to be doing the right thing here. What spec is the HDMI cable?

It's a recent premium/4k one - it passes HD audio fine with the v9 CoreELEC/LibreELEC images.

I just saw in the AMLogic section that someone is reporting the same issue with a Mecool box with a S912 Soc using v11/v12 LibreELEC.

Cheers

O'Brother · January 5, 2024 at 7:21 AM

This (thread) isn't resolved yet. Cheers