[mythtv-users] Glitches in firewire capture from DCT-6200

Steve Adeff adeffs at gmail.com
Sun Dec 18 02:01:25 EST 2005


On Saturday 17 December 2005 22:17, Alex Brekken wrote:
> Sorry, no I'm not using wireless.  (not on the Myth boxes anyway)  They're
> using the ethenet ports on the router.
>
> On 12/17/05, Brad DerManouelian <myth at dermanouelian.com> wrote:
> > It does sound like network latency if you're using wireless. Try
> > configuring your router to only use G, not B. That helped my network
> > issues a TON.
> > On Dec 17, 2005, at 9:47 PM, Alex Brekken wrote:
> >
> > I suppose it's possible, although I would think I would have this problem
> > all the time if it was a network thing, rather than intermittantly.  My
> > "network" consists of a D-Link 802.11G router connecting a 40 ft. run of
> > cat-5 cable to my basement where the slave-backend lives.  The master
> > backend/frontend box is right next to the router.
> >
> > On 12/17/05, Brad DerManouelian <myth at dermanouelian.com> wrote:
> > > Are you having networking issues?
> > >
> > > On Dec 17, 2005, at 9:19 PM, Alex Brekken wrote:
> > >
> > > Thanks guys, yes I changed the speed setting in mythtvsetup to 400
> > > mbps.  Now, plugreport shows that the data_rate=2 and stays there. 
> > > However, it didn't seem to fix my display issues.
> > >  It's not a stuttering necessairly, more of a slow-down - like it's in
> > > slow motion for a second or 2.  -it does this every 3 or 4 seconds. 
> > > "normal speed, slo-mo, normal speed, slo-mo," etc, etc.  The video
> > > itself doesn't break-up at all during this problem.    It doesn't do it
> > > all the time, but it can happen on any channel.  I see it both during
> > > liveTV viewing as well as on pre-recorded shows.
> > > The firewire capture is happening on a slave backend box, which is an
> > > older Dell pentium 3 1gHz machine.  I suppose it's possible that the
> > > machine itself is to blame (issue with PCI bus?) but I don't think the
> > > hard drive is the problem.  It's a newer 7200 RPM Western Digital drive
> > > with 8 mb cache.
> > >
> > > Any guesses?  I'd love to be able to utilize Firewire capture, since
> > > it's much more reliable now thanks to those pluctl commands - but if I
> > > can't fix this video slow-mo issue than I think I'll have to ditch it.
> > >
> > > On 12/17/05, Steve Adeff < adeffs at gmail.com> wrote:
> > > > What speed setting do you have set for the firewire capture device?
> > > > try
> > > > increasing it as Myth will change these plug values when you use
> > > > firewire as
> > > > a capture device.
> > > >
> > > > Steve

copy the file to a local machine thats not what your normally viewing the file 
on and see if you still have the issue.

Have you checked to see if your network connection is 100bT and not 10bT for 
some reason?

have you tried manually capping over the firewire to the local harddrive?

-- 
Steve


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