[mythtv-users] Raspberry Pi Improvements

jrh jharbestonus at gmail.com
Tue Aug 9 18:12:15 UTC 2016


> On Aug 9, 2016, at 1:18 PM, Joseph Fry <joe at thefrys.com> wrote:
> 
> On Tue, Aug 9, 2016 at 1:08 PM jrh <jharbestonus at gmail.com <mailto:jharbestonus at gmail.com>> wrote:
>> On Aug 9, 2016, at 12:35 PM, Joseph Fry <joe at thefrys.com <mailto:joe at thefrys.com>> wrote:
>> 
>> > There was an email on the dev list that seems to describe my issue,
>> > but it was focused on passthrough?
>> > http://www.gossamer-threads.com/lists/mythtv/dev/601746 <http://www.gossamer-threads.com/lists/mythtv/dev/601746>.  I am using
>> > HDMI for audio, but thats not really passthrough is it?
>> >
>> If you select HDMI audio, make sure to deselect the checkboxes for Dolby
>> digital, DTS, etc. If you turn those on it will do passthrough and that
>> gives the problems you describe. I am working on the solution for
>> passthrough.
>> 
>> I wish it were so easy... I do not have any of those options checked.  If I do check them I just get noise.
>> 
>> Nothing I do eliminate the stutter.
>> 
> 
> Are you using WIFI or wired network access? Wired helps alot regarding funky video/audio.
> 
> 
>> I wonder if, because I used  Raspbian Lite, I am missing some package or configuration needed.  For example, perhaps realtime threads aren't actually working or something?
>> 
>> Again, I would love for the package maintainer to test this on a Raspbian Lite base build and resolve dependencies in the package.  I don't get any errors on running it, but since no one else is complaining, I have to suspect that its unique to my environment, and I haven't seen anyone else using Raspbian Lite.
>> 
>> I suppose I can rebuild and test on a full Raspbian... it just seems like a waste of space when all I needed to add to Lite was a few media libraries and a base install of Xserver (no WM, graphical login, etc).  It works great except for this sound issue.
> 
> 
> I failed to mention that this is a Pi2... so wired.


That might explain differences. I am using a wired Pi 3. I tried a wired Pi 2 early on and it struggled as I recall, especially with 1080i content.


> 
> I don't think this is a throughput issue.  It sounds exactly like what they are dealing with in relation to pass through.  It just can't seem to maintain sync... you see in the logs that it keeps speeding up then slowing down.
> 
> I will get more logging when I have time and see if real time threads are working, thats the last thing I can think of on my own.
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