<p dir="ltr"><br>
On 11/01/2013 9:21 PM, "Frank Schlimbach" <<a href="mailto:galaxy_engine@gmx.de">galaxy_engine@gmx.de</a>> wrote:<br>
><br>
> -------- Original-Nachricht --------<br>
> > Datum: Fri, 11 Jan 2013 08:40:00 +0000<br>
> > Von: <a href="mailto:mythtv-users-request@mythtv.org">mythtv-users-request@mythtv.org</a><br>
> > An: <a href="mailto:mythtv-users@mythtv.org">mythtv-users@mythtv.org</a><br>
> > Betreff: mythtv-users Digest, Vol 118, Issue 34<br>
><br>
> > Message: 4<br>
> > Date: Fri, 11 Jan 2013 09:17:18 +1100<br>
> > From: Igor Cicimov <<a href="mailto:icicimov@gmail.com">icicimov@gmail.com</a>><br>
> > To: Discussion about MythTV <<a href="mailto:mythtv-users@mythtv.org">mythtv-users@mythtv.org</a>><br>
> > Subject: Re: [mythtv-users] judder with SD material<br>
> > Message-ID:<br>
> > <<a href="mailto:CAAKASGxD3gak65s-8pVowYPfiVnqu8YOuomS6qhV6PE8FpfhOQ@mail.gmail.com">CAAKASGxD3gak65s-8pVowYPfiVnqu8YOuomS6qhV6PE8FpfhOQ@mail.gmail.com</a>><br>
> > Content-Type: text/plain; charset="iso-8859-1"<br>
> ><br>
> > On 11/01/2013 2:01 AM, "Frank Schlimbach" <<a href="mailto:galaxy_engine@gmx.de">galaxy_engine@gmx.de</a>> wrote:<br>
> > ><br>
> > > > Hi,<br>
> > > > I lately switched to using separate backend and frontend machines,<br>
> > > > both running current mythbuntu and mythtv 0.26+fixes. The weird thing<br>
> > > > I am experiencing is that watching HD material seems to work fine<br>
> > > > while SD liveTV and recordings judder heavily (every 1-2 seconds or<br>
> > > > even more frequently). Most discussion on this topic I found are about<br>
> > > > the more intuitive reverse case, where HD is the problem. The build-in<br>
> > > > SD test works fine and playing the same file locally with vlc also<br>
> > > > looks good. CPU (Intel G530, no graphics card) load is low and I am<br>
> > > > running gigabit ethernet.<br>
> > > ><br>
> > > > Any idea?<br>
> > ><br>
> > > I did some more experiments. My TV can actually play all recordings<br>
> > directly through DLNA without any judder (it has other problems, though).<br>
> > > I also realized that both HD and SD recordings judder - but HD just not<br>
> > as strongly, but maybe more frequently. So I now suspect that this must be<br>
> > related with the network connection on the client side. I'll check cables<br>
> > tonight, but this experiment doesn't seem very promising.<br>
> > ><br>
> > > Any thoughts, experience, hints, ideas on how to debug this problem are<br>
> > highly welcome.<br>
> > ><br>
> > Did you read the judder free mythtv wiki page?<br>
><br>
> I am sorry I didn't mention it: Yes, I did. I followed it as much as I could (I am not using a Nvidia card) but it didn't help. I also used setuid without any effect.<br>
><br>
> Last night I made a few more experiments<br>
> 1. I switched network cables: no change<br>
> 2. I used VLC on the same frontend machine to get the uPnP streams from the mythtv server: *NO* judder<br>
> 3. I decreased the ringbuffer size in the backend: Maybe a little effect, but maybe not<br>
> 4. I used the OpenGL high quality setting in the frontend:<br>
> - higher CPU load<br>
> - less judder, but still visible and annoying<br>
><br>
> So the current state is that it's probably not the network. Something in the MythTV frontend seems to be responsible for this.<br>
><br>
> Are there any debug flags I could try?<br>
> Any other parameters I could experiment with?<br>
><br>
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<p dir="ltr">And you did set separate video mode for gui and tv playback in the setup right?<br>
</p>