[mythtv-users] Recording via Firewire on DCT6412

Jarod Wilson jarod at wilsonet.com
Mon Jun 22 18:31:23 UTC 2009

On Jun 22, 2009, someone said:

> On Mon, Jun 22, 2009 at 1:04 PM, <moodyjunk at frontiernet.net> wrote:
> I need some help with setting up firewire for recording via Motorola  
> DCT6412.  I am running MythTV 0.21 on Fedora 10 (packaged as  
> MythDora 10.21).
> From what I can ascertain from the various forums raw1394 has been  
> replaced with firewire_core in Fedora 10.  plugreport seems to work,  
> as does plugctl, but test-mpeg2 returns a 0 byte file.  Details are  
> below.  I have not been using firewire_tester, mythprime, or 6200ch  
> as they seem to depend on raw1394 which as I mentioned I believe is  
> no longer supported in FC10.
> Can anyone assist?  Can anyone confirm/deny that firewire_tester,  
> mythprime, and 6200ch are no longer needed with Fedora 10?  Can  
> anyone record from DCT641 via firewire using any distro?  Thanks.
> Details of plugreport, plugctl, and test-mpeg2:
> * plugreport returns the following in root (null report returned  
> when run as mythtv):

Ugh. I wish we'd just nudge F10 to 2.6.29 already... Should be the  
case later this week though. The current Fedora 11 2.6.29 kernel,  
plugreport works as non-root.

> * test-mpeg2 using node 1 gives warnings and a zero byte file;  
> DCT6412 is set on a valid clear-QAM HD channel.
> [root at localhost ~]# test-mpeg2 -r 1 > test.mpg
> libiec61883 warning: iec61883_cmp_overlay_p2p_output: Failed to set  
> the oPCR[0] plug for node 1.
> libiec61883 warning: Overlayed connection on channel -1.
> You may need to manually set the channel on the receiving node.
> Connect failed, reverting to broadcast channel 63.
> Starting to receive

I was just about to say "I've seen this same behavior reported by  
someone else recently", but I think that someone else is you. :)

> *1394 modules aren't loaded and I do not have /dev/raw1394 so I  
> assume the old stack is not there.


> firewire* modules are loaded so I assume the new stack is there:

And yup.

> Suggestions?  Thanks.
> are you sure you have your stb tuned to a non 5C channel?  i would  
> first test on a HD local channel.  Such as ABC or CBS.

With the cable box physically powered on too. plugreport and plugctl  
work w/my box even when the box is off, but test-mpeg2 won't.

> Also try unplugging stb from power, turn pc off.  let box power up,  
> plug in firewire and then boot pc and retry.

That too. I should really get that firewire_tester patch I was working  
with back in November into svn... /me adds to his TODO list...

Jarod Wilson
jarod at wilsonet.com

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