[mythtv-users] Recording Channel Change Does Not Always Work - Suggestions For How to Debug?

Yeechang Lee ylee at pobox.com
Mon Oct 26 18:32:07 UTC 2009

Nick Morrott <knowledgejunkie at gmail.com> says:
> > Also, why would the channel changing work better on live-tv than when
> > recording?  I would have thought they called the same function.
> http://www.gossamer-threads.com/lists/mythtv/users/402953#402953

This doesn't apply to Robert's issue as it involves FireWire, not

Robert, I've been using Firewire with my MythTV set up for four years
now and other than (very) occasionally in the first year or so,
changes have always been rock-solid; certainly more reliable than the
IR blaster I used with my old TiVo.

(I doubt, by the way, that LiveTV changes are actually more reliable
than automated changes; you just haven't run into the issue when using
Live TV yet.)

If you were using an external channel-changing script that invoked
'6200ch' I'd tell you to look at that, as '6200ch' has an -s option
that may (or may not) make channel changing more (or less) reliable,
but given your mention of looking through the MythTV code I presume
you are not. So, do try using 6200ch with/without the -s flag and see
if it helps.

Frontend/backend:	P4 3.0GHz, 1.5TB software RAID 5 array
Backend:		Quad-core Xeon 1.6GHz, 6.6TB sw RAID 6
Video inputs:		Four high-definition over FireWire/OTA
Accessories:		47" 1080p LCD, 5.1 digital, and MX-600

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