[mythtv-users] Recommendations for Myth Frontend on Raspberry Pi?

[Peter Bennett]

On 03/13/2017 01:04 AM, Tom Harris wrote:
>
>
> On Thu, Mar 9, 2017 at 12:46 PM, Phill Edwards <philledwards at gmail.com 
> <mailto:philledwards at gmail.com>> wrote:
>
>
>
>     On 9 Mar 2017 16:23, "Tom Harris" <thom.j.harris at gmail.com
>     <mailto:thom.j.harris at gmail.com>> wrote:
>
>         There are a bunch of threads, files, etc. for getting
>         mythfrontend running on a Raspberry Pi.  But, some of them
>         appear no longer maintained/updated.
>         So, I'm wondering what's the current recommendation for a Pi
>         frontend deployment.
>
>
>     This page says it's up to date for 0.28
>     https://www.mythtv.org/wiki/Raspberry_Pi
>     <https://www.mythtv.org/wiki/Raspberry_Pi>
>
>
> I had some time to set up a new Pi3 frontend this weekend.  I 
> basically replicated the same experience from when I tried a little 
> more than a year ago.  1080i was still not usable for me.   It seems 
> like others have this working.. what am I missing?
>
> My experience was:
>
> 1. Spent a lot of time debugging.  This is a recurring theme in my 
> long experience with MythTV.  I got random frontend hangs, which I 
> thought were related to video decoding.  But, after much debugging got 
> it down to the "query_cache" settings in MySQL.  Once I disabled that 
> the frontend became reliable.
>
> 2. US Broadcast MPEG2 @ 720P works great.
>
> 3. US Broadcast MPEG2 @1080i does not work well.   I get video 
> playback, but with frequent audio hiccups and some video hiccups.  The 
> default de-interlacer setting of 'Advanced (HW)' was quite bad.  When 
> I changed it to "Fast (hw)' it worked much better -- but still had 
> audio/video hiccups.
>
> MythTV version: 0.28 (up-to-date frontend and backend)
> Video Settings: OpenMax normal,  Decoder: Openmax, renderer: openmax, 
> OSD Renderer: OpenGL; Primary deinterlacer: Fast(HW)
> MPEG2 license enabled: verified by command line and CPU load during 
> playback
> Output: HDMI @ 1080P on 4K TV
>
> Any tips on reliable 1080i MPEG2 playback?
>
>

Did you look at the "System Performance" section in the Raspberry Pi Page?
https://www.mythtv.org/wiki/Raspberry_Pi
If you still have a problem, try running with -v playback. See if there 
are any audio sync errors or other messages displayed.

Peter
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