[mythtv-users] Audio delays on startup of Onkyo amplifier TX-NR646

[Peter Bennett (cats22)]

On 02/11/2016 05:47 PM, Kingsley Turner wrote:
> G'day,
>
> I purchased a new receiver in November, an Onkyo TX-NR646.
> It seems like a great amp - decodes anything I throw at it, and has a
> nice assortment of HDMI inputs & outputs.
> I send the signal over HDMI from the nVidia card through the amp to
> the TV.  So the amp handles all the audio, passes through the video.
> So far that's all sweet.
>
> However...
>
> Whenever I playback something via mythtv, video appears immediately on
> the TV,  and then there's a 3 to 4 second delay before sound starts
> up.  So if you're watching a music clip, or a TV show with dialogue at
> the start, you have to rewind to hear the whole thing.
>
> I never had a problem like this with the previous Pioneer receiver, it
> just started audio at the same time as the video.  But this was
> connected via AC-3 (SPDIF) not HDMI.
>
> I have just sent a question to Onkyo support, but I wondered if there
> was anything I could do on the mythtv side to alleviate this?
>
> One thing I thought of was changing audio output to PulseAudio, and
> constantly playing a clip of silence to keep the HDMI link active.
> Although that sounds like a particularly crappy "solution".
>
> Any sage advice?
>
>
> thanks,
> -kt
>
>

I have an older Onkyo without HDMI, and I run HDMI to my TV, and then an
audio Toslink fiber cable takes the signal from the TV to the amplifier.
The TV can actually convert the audio from HDMI to Toslink. You may want
to try this setup. I have never noticed any delay.

Peter