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

[Steve Adeff]

there was a thread a while back regarding this. You can search on Gossamer for 
more info. basically you want to run this bash script. It will set the p2p or 
broadcast connection to 1 depending on what your machine will use. From what 
I've found bcast is prefered when available, which is why it comes second 
(since its one or the other) p2p is sometimes only available and when this is 
the case its fine. data_rate doesn't need to be 3, but it increases speed if 
your using firewire for capture and not just channel changing. I have it run 
before mythbackend starts when I run it via init.d and I've found it resets 
sometimes so I run it hourly as a cron job.

oh, and the -n # is which node it is. In case you have more than one firewire 
connection have it run for each connection as well.

#!/bin/bash
plugctl -n 2 opcr[0].channel=63
plugctl -n 2 opcr[0].n_p2p_connections=1
plugctl -n 2 opcr[0].bcast_connection=1
plugctl -n 2 opcr[0].data_rate=3

-- 
Steve

On Friday 09 December 2005 14:52, Azmat wrote:
> Here's my plugreport output:
> Host Adapter 0
> ==============
>
> Node 0 GUID 0x0000d10080357942
> ------------------------------
> libiec61883 error: error reading oMPR
> libiec61883 error: error reading iMPR
>
> Node 1 GUID 0x4279358080357942
> ------------------------------
> libiec61883 error: error reading oMPR
> libiec61883 error: error reading iMPR
>
> Node 2 GUID 0x000f9ffffe103008
> ------------------------------
> oMPR n_plugs=1, data_rate=2, bcast_channel=63
> oPCR[0] online=1, bcast_connection=0, n_p2p_connections=0
>         channel=63, data_rate=0, overhead_id=0, payload=376
> iMPR n_plugs=0, data_rate=2
>
> On 12/9/05, Steve Adeff <adeffs at gmail.com> wrote:
> > On Friday 09 December 2005 12:44, Azmat wrote:
> > > Hi,
> > >
> > > My mythtv system is running on an AMD Athlon XP 2400+ (2 GHz) with 1G
> > > RAM, a PVR-350 and firewire capture from my Motorola DCT-6200 cable
> > > box.  Whenever I do firewire capture from the box through Myth, the
> > > recording exhibits a audio/video glitching.  The picture will
> > > momentarily become pixelated and there will be a brief skip.  I can
> > > tell the glitch is in the recording because when I rewind and playback
> > > it is reproducible.  There is no pattern or regularity to the
> > > glitching.  Sometimes it will be at the start of the show and will
> > > disappear in the middle, only to reappear later.  It doesn't prevent
> > > me from recording shows, but is just become a huge annoyance that I'd
> > > like to take care of.  Does anyone have any idea what might be wrong?
> > > Do you think a faster processor would help?
> > >
> > > Thanks in advance,
> > >
> > > Azmat
> >
> > run plugreport and paste the output.
> >
> > --
> > Steve
>
> --
>
>
> Azmat