[mythtv-users] Great, another jitter thread

[Keith C]

Hey, just because I said the new modules.conf fixed my scratchy sound
and back-to-back recording problem, it doesn't mean it did anything for
jitter.  I'm jittering like crazy, always have.  I've got jitter
reduction on and de-interlace on, and I tried Experimental A/V Sync
once, but it blew up my backend (required a reboot to fix, restarting
the service did nothing).

Keith

On Fri, 2003-09-12 at 16:24, Jarod C. Wilson wrote:
> On Friday, Sep 12, 2003, at 10:59 US/Pacific, <allred at adelphia.net> 
> wrote:
> 
> > I know there are some threads with similar issues, but despite a 
> > search through the list - I'd like to see if anyone can help.
> >
> > I have the "scrolling news ticker jitter problem" as well as issues 
> > with any fast paced camera pan (Football has a slow motion sort of 
> > look) watching live or recorded.
> >
> > Last night I used mencoder to produce an avi of CNN with the ticker.  
> > This file plays without jitter on a Win machine locally and via remote 
> > mount over network.  I shut down mythtv and played the file with 
> > mplayer on the linux box - same jitter problem.
> >
> > I have tried every combination of jitter reduction/de-interlacing/av 
> > sync/resolution that has been suggested.
> >
> > DMA settings all check out as per the Docs.  Setup is hardware 
> > encoding.
> >
> > Running RH 9 W/ Myth .11 as per JW's doc - Front/Back on same sys
> > PVR-250 (pvr250_17_21199)
> 
> 
> You might try a minor adjustment to your modules.conf file. This tweak 
> has fixed a few video issues for others, and is more in line with the 
> ivtv developer's recommendation for modules.conf. I'm not certain if it 
> will help your particular issue or not, but please give it a try. 
> Anyhow, change the add below and add above ivtv lines to match:
> 
> add below ivtv msp3400 saa7115 tuner
> add above ivtv lirc_dev lirc_i2c
> 
> This is in the very latest rev of the doc, which I don't think Mark has 
> had a chance to post up on PVRHW just yet.
> 
> The odd thing on this one is that I see pretty much identical video 
> performance with this new version and the old version (I don't have any 
> problems at all), while others have seen significant improvements with 
> the new version.
> 
> --Jarod