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

[Kingsley Turner]

On 14/02/16 04:26, jksjdevelop wrote:
>
>
> On 12/02/16 02:44, Phill Edwards wrote:
>>
>>     > I purchased a new receiver in November, an Onkyo TX-NR646.
>>     > 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 have the same receiver and I have the exact same experience. I thought 
>> it was just "normal" and the way it is. If you hear back from Onkyo 
>> Support I'd live to hear what they say.
>>
> I have had this problem in the past but resolved it by setting the 
> frontend to always upconvert stereo to 5.1 so the output from Mythtv never 
> changes format. The Onkyo receiver is set to CBL Direct mode ie do 
> nothing. The display on the receiver shows it is receiving MCH PCM 5.1.

G'day,

I have just now set the audio "Upmix to 5.1" and it doesn't make any difference.

It seems like the first ~3 seconds of the delay is waiting for the HDMI 
audio link to come up or suchlike.

The video starts, a few seconds delay, the "HDMI" light on the receiver GUI 
glows, then less than 1/2 second later the "pcm" and/or "DD" etc. lights 
come on.

Maybe I should SPDIF the audio to the receiver as Mr Bennett suggests in a 
previous response.
I did buy an SPDIF audio out bracket, etc. but I really wanted the HDMI 
all-in-one simple solution.

cheers,
-kt

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