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

Alex Brekken brekkal at gmail.com
Sat Dec 17 21:19:24 EST 2005

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
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> mythtv-users mailing list
> mythtv-users at mythtv.org
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