[mythtv-users] MythTV Raspberry Pi2 frontend testers

[Lawrence Rust]

On Sat, 2016-01-02 at 09:21 +1100, Kingsley Turner wrote:
> On 02/01/16 06:17, Lawrence Rust wrote:
> > On Fri, 2016-01-01 at 18:39 +1100, Kingsley Turner wrote:
> >> However the #1 problem was browsing the "videos" section.
> >> There's about 12 directories in my upper-level video tree, but it took the
> >> RPi about 40 seconds to bring up the nav-panel.
> >> If I went into a subdirectory of this (which has ~317 folders) it took
> >> around 2 minutes to come back.
> >>
> >> What exactly is going on during this browse?
> > The slowness that you are seeing is, I believe, due to multiple remote
> > MySQL queries which appear to be very slow on the RPi.  I have some
> > patches that alleviate the problem by caching some dbase operations but
> > they're quite substantial changes so I don't want to push them until
> > after 0.28 is done & dusted.  I could add them to my fixes-0.27-rpi2
> > branch if you wanted to try them?
> 
> Sounds good, just let me know how to apply the patches ;)

Follow the instructions here:
http://www.softsystem.co.uk/download/mythtv/mythtv_for_rpi.txt

to checkout my fixes-0.27-rpi2 branch. I will add the new patches in the
next day or so.

> That was a question I had actually - I built 0.27 for the RPi, but only 
> because my BE is 0.27.
> Can a version 0.28 FE talk to a 0.27 BE ?

Strictly no, but I have been thinking along these lines myself.  It
would considerably ease testing of 0.28 FE's if they could be used with
an existing 0.27 BE.

> Does RPi mythFE use those MPEG/VP1 hardware decoding licences at all?

Yes.  The OpenMAX decoder requires the MPEG licence to enable h/w
accelerated decoding of MPEG2/4.  Without the license, decoding falls
back to Ffmpeg in s/w.  If you have H264 or mp4 recordings they will be
hardware accelerated without any licenses.

> I'm quite happy to pay for licensing, but if the licence or hardware isn't 
> used, there's no point.

IMHO it's worth paying for the MPEG license.

-- Lawrence Rust