[mythtv-users] Ubuntu-mate on Raspberry pi and mythtv library problems

[Bob Sully]

> Unfortunately, Ubuntu on Raspberry Pi is somewhat buggy on the 
> hardware
> support side. CEC and OpenGL ES are not working either. I have only 
> used
> analog sound for testing Raspberry Pi Ubuntu. Multimedia support is 
> much
> better with Raspbian.

> The boot/config.txt in Ubuntu has detailed documentation in the form 
> of
> comments. I would look there to see if you can find anything for
> activating HDMI audio.

> So my recommendation is Raspbian.


Went back to Raspbian, as suggested, and have the OS configured 
optimally, and mildly overclocked.

Still having lots of problems with the Myth frontend on the Pi 3 
(running the latest 0.28 under Raspbian):


It seems to take a long time to read the Videos database on my backend 
system downstairs (takes about 10-15 seconds before I get the list of 
files, and it takes a long time to move between directories (granted, I 
have a lot of files, but it's 10x slower than on the BE/FE machine)).

Sound (which works fine with all other applications, upgrades to 
5.1/HDMI, even though it says it's only analog) does NOT work well in 
Myth.  It doesn't play at all on recordings.  On videos (e.g. copies of 
ripped Blu_Rays/DVDs) it does play (using OpenMAX HDMI), but choppy 
(though that might be due to the poor video playback).

Video playback is very choppy on some .avi/.mp4 files (movies, as 
above) but is pretty smooth on 720p; 1080p is basically un=playable.  
I've used both OpenMAX Normal and OpenMAX High Quality.  No real 
difference.


To restate:  Video playback is OK on recorded programs, but no sound.  
There is sound on video (720p) .avi/mp4 files in the video library, but 
video playback is lousy; on 1080p, it's unwatchable.


I have the license keys, and have placed them in the /boot/config.txt 
file.


Now...I went ahead and installed Kodi on it to see how it does with 
playback.   Perfect - clean, smooth video and 5.1 audio on all files 
tested (including 1080p with DTS and Dolby Digital sound).
So, I know it's not a configuration issue with the Pi.  I must have 
Myth misconfigured.


What are the optimal settings in Setup to get sound and video playback 
working right on Myth on the Pi 3 on Jessie?  I'd really like to get 
this working cleanly.

Thanks very much, in advance - Bob

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