[mythtv-users] DCT-6200 Firewire issue

[David Rudder]

Hi,
I know this is a linux1394 issue, but I posted to the mailing list and 
have gotten no response.  I was wondering if anyone here has seen this 
problem and maybe can help me out.  TIA.  Here's my email to linux1394:

I'm trying to setup a MythTV to record from my Motorola DCT 6412.  I 
have read through all the documentation and the emails on the various 
lists. I am seeing some of the same problems as others, but the 
work-around isn't working for me.  They say to use plugctl to setup a 
broadcast connection and use broadcast within mythtv.  I have not been 
able to receive video through broadcast.

Basically, I can setup a p2p connection and use test-mpeg to download 
video.  It works some of the time.  The mailing lists say about 50%.  
I'm seeing about 33%, but I think that's a quibble and not really 
significant.

But, I can't for the life of me get broadcast connections working.

I have a Texas Instruments firewire card.  I used it in another computer 
to download video from a Sony TRV-120 video camera with Kino.  Made some 
really cute videos of my kids :)  So, I know the card works.  Here's the 
lspci:
00:08.0 FireWire (IEEE 1394): Texas Instruments TSB12LV26 IEEE-1394 
Controller (Link)

I have a Motorola DCT 6412 connected via firewire to the host computer.  
Here's plugreport:
Host Adapter 0
==============
 
Node 0 GUID 0x00309526b0022369
------------------------------
libiec61883 error: error reading oMPR
libiec61883 error: error reading iMPR
 
Node 1 GUID 0x00152ffffed1547e
------------------------------
oMPR n_plugs=1, data_rate=2, bcast_channel=63
oPCR[0] online=1, bcast_connection=0, n_p2p_connections=2
        channel=0, data_rate=2, overhead_id=0, payload=376
iMPR n_plugs=0, data_rate=2


Here's the output from test-mpeg with a p2p connection:

# test-mpeg2 -r 1 foo.ts
libiec61883 warning: Overlayed connection on channel 0.
You may need to manually set the channel on the receiving node.
Starting to receive
done.
# ls -l foo.ts
-rw-r--r--  1 root root 1136460 Nov 28 12:33 foo.ts

As I said, this works about 1/3 of the time.  Playing it with mplayer 
works fine, every time I get any video at all.  I never get corrupted 
video.  It's either works or doesn't work.


I haven't been able to find out for sure how to use test-mpeg with a 
bcast connection.  I think I just supply a bad node.  Like so:
# plugctl -p 0 -n 1 oPCR\[0\].channel=63
# plugctl -p 0 -n 1 oPCR\[0\].bcast_connection=1
# test-mpeg2 -r boogabooga foo.ts
libiec61883 warning: No plugs exist on either node; using default 
broadcast channel 63.
Starting to receive
done.
# ls -l foo.ts
-rw-r--r--  1 root root 0 Nov 28 12:36 foo.ts


Now, to get MythTV to work, everyone says to use a bcast connection.  
Can someone tell me how to get the bcast connection working?  Am I doing 
something wrong?  Is my test-mpeg run correct?  Is my 1394 card hosed?

Thanks,
Dave