[mythtv-users] firewire with 3250

[nik gibson]

That does sound perfect, could you post the code?

Thanks

On 11/17/06, Eric Smith <erictsmith at gmail.com> wrote:
>
> That sounds like exactly what i was thinking about.  Would you mind
> posting what you have?
>
> On 11/17/06, John P Poet <jppoet at gmail.com> wrote:
> > On 11/17/06, Eric Smith <erictsmith at gmail.com> wrote:
> > > Just thinking out loud here....  I to have a 3250HD box with firewire
> > > working fairly reliablly as long as i stay within the non 5c channels.
> > >  However, I'm also feeding an s-video stream from the same cable box
> > > for channels which are not available over the firewire connection.  So
> > > quite frequently i will hit one of those channels that the firewire
> > > connection can not recover from.  Typically when i see this i just
> > > unplug the firewire from the cable box for a few seconds, plug it back
> > > in and everything is up and running again.  Unfortunately, this is not
> > > good for the WAF when I'm not around to notice and Grey's Anatomy
> > > records as an empty file.
> > >
> > > So my thought is, there are several versions of scripts out there now
> > > that can be used to "prime" the firewire connection and make sure it
> > > is available.  I haven't used them myself yet, but assuming they are
> > > not too resource/time consuming... would it be possible to set it up
> > > to always check the connection and rerun one of these types of scripts
> > > before changing the channel to something on the firewire input?
> > >
> > > And a follow-up (perhaps wish-list thought).  Is there a way (or could
> > > there be) to associate an HD channel to its equivalent non hd channel.
> > >  So in the example above, myth starts the recording of Grey's Anatomy
> > > on the HD channel.... immediately recognizes that the firewire
> > > connection is not available and switches the recording the the non HD
> > > equivalent.
> > >
> > > Like i said... just thinking out loud.
> >
> > I have something like this setup for myself.
> >
> > I use Jim Westfall firewire_tester app within my channel changing
> > program to make sure I am getting good data.  If the firewire_tester
> > does not report a good video stream, then my program tries to change
> > the channel again, followed by another run of firewire_tester, this
> > time with the -R option, which resets the firewire bus.
> >
> > For me, the above means that my channel changes are now 100% reliable,
> > instead of 97%.
> >
> > Only gotcha, is it can take my SA3250HD box up to 5 full seconds to
> > change the channel.  Until it successfully changes to the new channel,
> > it will continue to stream data from the previous channel.  This means
> > that after issue the channel change command,  my program has to wait 5
> > seconds before it can trust the output from firewire_tester.
> >
> > John
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