Vero V - Youtube KODI audio dropout 4K content

Help and Support
1

New to OSMC and VERO V - longtime KODI (XBMC) user.

Youtube add-on with InputStream Adaptive - get audio dropouts for 1-2 seconds every 19 seconds or so with 4K content. Only audio - video is fine.

1080p plays fine.

4K and 4K HDR (VP9) frequent audio dropouts - video plays fine

Audio Output Device (AML-AUGESOUND, HDMI)

HDMI passthrough, main UI 1080 60p, whitelisted everything the TV supports, Lock HDMI HPD, HDR Auto EDID.

This audio dropout behaviour only happens in the Youtube plugin (as far as I have experienced).

2

What is the audio samplerate? If it’s 44.1kHz you will have to set audio to fixed 48kHz. Elusive bug.

3

Confirmed - Set Audio to fixed - limited to 48KHz works - but isn’t a good option for my use case.Audio is very important - so resampling is not something I want to entertain.

Redbook CD is 16bit/44.1KHz. No problem playing that.

What I can confirm -

All the youtube audio that i examined is 44.1KHz.

Specifically FL, FR - ff-aac, 32 bits, 44,100 Hz

The dropouts only occur when the screen resolution is set for 3840x2160.

Video is am-VP9 (HW) Decode - CPU usage #0 through #3 is pretty low.

If I play youtube content that is 3840x2160 but at a screen resolution of 1920 x 1080 - there are no audio dropouts. Change that to screen output of 3840x2160 - dropouts.

So the dropouts follow the screen resolution - not necessarily the youtube video stream encoded resolution.

I have my audio set for 5.1 - best match, passthrough (HDMI-eARC)

IF I set the audio output to FIXED at say 48kHz - the dropouts go away. So that IS a possible solution for Youtube 4K content.
I tried setting this to 192kHz and had audio glitches navigating KODI’s UI. ALSO - with fixed frequency - I lose out all of the HD bitstream audio codecs such as DTSHD-MA, TRUEHD, etc.

So fixing the sample rate and passing PCM is not an option for me. Unless I want to change this setting every time I want to view youtube 4K content.

I’d rather set my audio passthrough as is for 5.1 best match, and limit my youtube resolution to 1920x1080 and have the TV do upscaling.

At least IF I want to view youtube 4K I now know how to avoid the dropouts. So there’s that!

I’d call this a workaround for a glitch that shouldn’t be there.

4

Agreed. It’s something I keep coming back to but just haven’t found what’s causing it. I’ve been trying to find out exactly when it started as it hasn’t always been thus.

I hope you can bear with us.