[mythtv-users] MythTV 0.27.4: Trouble-free LiveTV with ivtv?

[Karl Newman]

On Thu, Apr 9, 2015 at 3:41 PM, Saul <jaglover at gmail.com> wrote:

> On Thu, 9 Apr 2015 13:30:37 +0100
> Nick Morrott <knowledgejunkie at gmail.com> wrote:
>
> > I'm wondering if there are any users running the current stable
> > release of MythTV (0.27.4) with ivtv-based hardware capture card(s)
> > (i.e. PVR-150/250/500) who do *not* have any problems with LiveTV
> > playback?
> >
> > If you are one of the lucky ones, please could you provide details of
> > your distribution, kernel version, and any patches you have needed to
> > apply.
>
> Yes, I'm interested, too. Anything newer than Gentoo 0.27_p20140321
> will crash when a transmission ends and another one starts. With 2250
> card.
>
> I guess I'm a "lucky" one, but I've never had problems like what Nick is
describing (PVR-500 here). We don't use LiveTV much anymore (now that I
have the family trained) but it still seems to work okay when I try it. I
haven't applied any particular patches to make that part work any better. I
have patches to fix commercial flagging, etc. but nothing related to
playback. I'm successfully using the newest mythtv release on Gentoo on two
different Intel platforms (an i3 Sandy Bridge on the combined
frontend/backend and a Bay Trail/ECS Liva on a dedicated frontend). Both
are using VAAPI. The backend is on 3.12.? and the frontend is on 3.18.?
both using the Gentoo-sources patch set. That may be something to
investigate, as I understand that there was a LiveTV bug semi-recently
introduced that toggles VAAPI on and off on a program change or channel
change. If your VAAPI is not working correctly, or there's a problem with
the OpenGL or software decode, that may cause it to crash if it flips back
and forth.

Karl
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