[mythtv-users] Stuttering Video in some Live TV

[Danny Fajardo]

Thanks for your advice. With your first point, I still don't see why I
should have problems with even a very 'demanding' playback. I have a
dual-core 6000+ processor (with 64-bit Ubuntu) and I also have 6 GB of RAM
installed besides running 2 8600GT graphic cards in SLI. My system is I
believe quite powerful enough. I must say though that I only have a 19-inch
monitor. Would that make a difference? Like I said, with Windows the
hardware works without problems.
With your second point, I will look into this. I will build a partition
exclusively for MythTV live and recordings. I forgot to mention that
currently my Live TV is on an LVM volume. It is a separate LVM partition but
it is in the same physical volume group as my OS/MySQL. That could affect
playback. Could you give me advice on how to copy this partition to a
separate partition? I have already recorded stuff I don't want to lose.

Thanks

Danny

On Mon, Jul 13, 2009 at 2:47 PM, <mythtv at derdev.com> wrote:

> Simplest observations a Myth noob can offer:
>
> 1) There are various resolutions of HD broadcast output quality, so some
> stations are simply more "demanding" for playback than others...
> Shouldn't make a difference in general, but if you're on the margin, then
> my (limited) experience is that the most intense HD programming will tip
> the balance.
>
> 2) I also took to heart the forum advice that you should use a separate
> disk for "watch live TV" storage from your OS/MySQL db.  I found that once
> I moved my live tv storage volume to another disk, that greatly improved
> stutter and other artifacts in playback.  This is a mythbackend setting.
>
>
>
>
> > I've been trying to find a solution to my MythTV problem. I have combed
> > the forums and although I found that some users have a similar problem, I
> > haven't found a satisfactory solution. The problem is this: on some
> > channels
> > like Channels 3 and 4, I get terribly bad stuttering playback of Live TV.
> > However this doesn't happen with other channels like the BBC which play
> > fine, quite good actually. I don't understand while a few channels
> stutter
> > while most don't.
> >
> > I have an AMD64 Dual Core, with dual SLI 8600GT Nvidia cards and a
> > Hauppauge HVR 3000 TV Card. I use the Nvidia VDPAU encoder although I've
> > tried different settings to the encoder to find solution to my problem.
> > Using mythtv -v playback I get messages such as ac-tex being
> > damaged, MPEG motion out of boundary, and NVP: video frames behind audio.
> > I've also tried different settings in the frontend but problem persist.
> > I'm
> > sure the problem is not hardware because I dual-boot with Windows and
> > using
> > Hauppauge propriety package I can watch Live TV there without any
> problem.
> > From the forums my intuition tells me it might have something to do with
> > i2c. I don't know anything about i2c and I'm not sure how this relates to
> > MythTV or to Hauppauge driver modules. An explanation would be great. I
> > also
> > suspect that for the channels that don't work, they use the same
> > transcoder
> > and I might have a missing codec.
> >
> > I'd like to add that I'm very new with Linux and MythTV. I really like
> > using
> > them both so a much like for me would be highly appreciated.
> >
> > Danny
> > _______________________________________________
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> > mythtv-users at mythtv.org
> > http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users
> >
>
>
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