[mythtv] State of Raspberry Pi 2 build

[Mike Bibbings]

On 29/01/16 20:14, Peter Bennett wrote:
> On 01/28/2016 04:56 PM, Piotr Oniszczuk wrote:
>>> In the mean time: may You do me favor and try MinMyth2 RPI edition?
>>> I’m wonder what difference will be in playback between Your master build on Raspbian and mine in MiniMyth2….
>>> (don’t forget to do „pacman -Syu" update Minimyth2 system before tests)
>>>
>>>
> Hi Piotr
>
> I tried your minimyth2. It looks good!
> Here is my detailed feedback -
> The tar xvf needs an option added "--numeric-owner" at the end. Without
> that option the mythtv home directory and its files got owner id of 200,
> which is the id of the mythtv user on my system, and would not match 997
> which is the id of mythtv on the minimyth2 image.
> First boot up went to prompt for country and language, then it took a
> long time to come to the prompt for selecting your backend. Then it
> showed one entry in the list, named "Firewall". Why is it showing Firewall?
> After I selected Firewall it took a long time and then said "Unknown Error".
> After the unknown error it came back to the selection so I selected
> "Manual" instead of "Firewall".
> After i selected manual it came to black screen (which you said was
> expected).
> At black screen I killed mythfrontend, nothing happened and I killed it
> again.
> After this it came back to the Country and Language prompt. I entered
> them again, and it just came back to Country and Language, over and over.
> I rebooted, then it started up at the mythtv main menu.
> I used setup and selected Mythcenter theme.
> I tried playing a recording and got "Audio Disabled" message. Video
> looked ok.
> I went into audio setup and just selected the default that came up
> (Alsa:default), and hit next up to the end of the setting.
> After this I tried playing the recording again and audio works.
> Audio and video are jerky, I think the video is too slow and audio is
> stopping and starting.
> Audio is scratchy unless I set maximum volume in Mythtv. I don't think
> this happens with my Raspbian setup.
> I have had jerky audio and video with Raspbian and eglfs - I think that
> xcb will work better. How do I get X11 on miminyth?
> I went into mythtv setup to try to reduce the picture size so that it
> could handle overscan, but the same problem exists as with eglfs on
> Raspbian - the X and Y offset are ignored and the "Use GUI size for TV
> playback" setting is ignored. All of these things work with xcb.
> There is a bug in my current 0.27 raspberry pi frontend - in a recording
> if the resolution changes the frontend crashes. - This bug is now fixed
> in minimyth2. Maybe this is fixed in master.
> There is no way to shut it down. However I suppose raspberry pi can just
> be left on. In my own setup I use a shell script that prompts for you to
> press 22 on the remote to start up the front end. It comes back to this
> prompt every time you exit the front end. I exit the front end, which
> lets the backend shut down.
>
> Can you explain how you built this? The one I built does not work and I
> thought it was because LVR's patches were not there. Did you do any
> patches? Did you cross-compile from a Linux box? I would be interested
> to try what you did, to see if it will work on Raspbian.
>
> Peter
>
>
>
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I have just tried MiniMyth2 and it works reasonably well against my 
mythbackend 0.28pre with DVB-S/S2 and DVB-T/T2 tuners (I am in the UK 
using Freesat and Freeview).

The main issue I have is with HD (H264), both LiveTV and recorded 
programs in that there is some jitter, even with OSD renderer set to 
softblend (in openmax profile), if set to opengl2 HD is totally 
unusable. SD live TV  and recorded programs are ok.

These results are comparable to my RPI2 build  on Debian Jessie (x86_64) 
using  Lawrence Rust mythbuild.sh system. Although under RPI2 Raspbian 
Jessie only xcb works for me (eglfs seg faults at startup).

Mheg (Red Button) services work, but  live TV  stutters very badly even 
using softblend.

The good news is that Mythbrowser (Web) and MythNews (News Feeds) do 
work (I believe this is due to later QT5 version than in Lawrence Rust 
build which uses 5.4.0).

I tried to change to Steppes theme, but download failed in Theme 
Chooser. Steppes (2.17) did work when I installed it manually from git. 
Changing theme does work in Lawrence Rust build.

I am  a bit confused about tar v bsdtar. The --numeric-owner option only 
seems to apply to tar, not bsdtar. The image I created was done as root 
on Debian Jessie (x86_64) using tar with the --numeric-owner option.

Mike