[mythtv-users] Debug Atom/Ion HDMI audio?

[Tom Harris]

On Wed, Oct 7, 2015 at 1:49 PM, Tom Harris <thom.j.harris at gmail.com> wrote:

>
>
> On Wed, Oct 7, 2015 at 11:08 AM, HP-mini <blm-ubunet at slingshot.co.nz>
> wrote:
>
>> On Tue, 2015-10-06 at 22:19 -0700, Tom Harris wrote:
>> > I recently switched my frontend to a Zotac Zbox with an Atom 330 and
>> > Ion GPU.  I've worked out most of the issues, but still have one
>> > remaining problem that I'm having a hard time debugging.
>> >
>> >
>> > The audio has very frequent dropouts, where there will be no sound for
>> > a fraction of a second.  These little hiccups are sometimes bad enough
>> > to be unwatchable.
>> >
>> >
>> > - The program seems to be okey.  I've played the same video on my TV
>> > via DNLP and it played perfectly.
>> > - The video shows no interruption, only the audio has problems.
>> > - Audio/Video output is over HDMI to a Yamaha soundbar
>> >
>> >
>> > In the past, I had used this hardware for a myth frontend.  At that
>> > time my display was 720p, it's now doing 1080p.  Could 1080p be
>> > stressing the Ion?
>> >
>> >
>> > I tried running mythfrontend with "-verbose audio" and didn't get any
>> > audio logs.  Any pointers on how to debug the audio issue?
>> >
>>
>> Changing the display from 720p to 1080p could tax the ION box more or
>> less but depends on source material resolution.
>> Video is decoded at its actual resolution & then post-processed
>> (de-interlace/scale etc).
>> Post-processing is the IONs weak point.
>> Easy: 720p (source) -->720p (presentation)
>> Hard: 480i (s) --> 1080p (pres)
>>
>
> All of my content is US broadcast MPEG2 at 720p 1080i.   I am, of course,
> doing VDPAU decoding, and I changed the deinterlace from the default method
> which was a 2x deinterlacer to a simpler one.   But, that hasn't seemed to
> make any difference.
>
>
>> logs from the frontend:
>> mythfrontend --verbose playback > feplayback.log
>>
>> IIRC The ION does not allow HDA ELD reporting.
>>
>
> I'll try 'playback'..  I should have tried that before, but I was thinking
> of that more for video issues and I went for the 'audio' option.
>

Unfortunately, adding 'playback' debugging didn't offer a lot more
information..    There aren't a whole log of log events generated.   The
one type of log which is repeated quite a lot is:

2015-10-07 23:29:55.016387 I  AFD: EIA-708 caption service #5 is in the
Undetermined language.
2015-10-07 23:29:55.016416 I  AFD: EIA-708 caption service #6 is in the
Undetermined language.
2015-10-07 23:29:55.016449 I  AFD: EIA-608 caption service #1 is in the
Undetermined language.
2015-10-07 23:29:55.082768 I  AFD: EIA-708 caption service #1 is in the
Undetermined language.
2015-10-07 23:29:55.082808 I  AFD: EIA-708 caption service #2 is in the
Undetermined language.

Searches didn't turn up much about that log..  I'm not sure if it's
unimportant, a symptom of another issue, or part of the cause..

I've tried all the various audio settings and options. But, nothing seems
to help.


> Thanks for the response!
>
>
>>
>>
>> _______________________________________________
>> mythtv-users mailing list
>> mythtv-users at mythtv.org
>> http://lists.mythtv.org/mailman/listinfo/mythtv-users
>> http://wiki.mythtv.org/Mailing_List_etiquette
>> MythTV Forums: https://forum.mythtv.org
>>
>
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.mythtv.org/pipermail/mythtv-users/attachments/20151007/3a0bdee4/attachment.html>