[mythtv-users] ATSC channel scan broken in mythtvsetup?

[Chris Cox, N0UK]

On Thu, 19 Jul 2007, kim Gross wrote:
> I would love to get my avermedia 180 HD up and running, but I have no
> idea how to find out the frequencies off of my cable setup.  Does
> anybody know of a howto on getting this to work correctly?

Biting the bullet and recreating my capture cards from scratch in cas 
ethat had something to do with my previously reported sporadic problems, I 
ran into this very same problem.

I thought it was me!

But, I too found that if I manually entered the frequencies used for ATSC 
using the transport editor and then doing a rescan of just previously 
defined transports, the mux data was decoded reliably.  Incidentally, if 
you do a dmesg out in a shell, you'll see a bunch of invalid modulation 
method error messages being logged by the system.

Anyway, I grabbed the dvb-atsc-tools-1.0.6 source code from the downloads 
section of the pcHDTV support site and found that its "dtvscan" program 
worked flawlessly.  Although the channels.conf file format can't be parsed 
correctly by myth, the second field in that file it creates is the 
frequency value in Hertz that you can then enter into the myth transport 
editor.

Convoluted and complicated, yes, but it seems to work.

  -- 
73  Chris Cox, N0UK  email: chrisc at chris.org or chrisc at BritishCarAndDriver.Com
                                              or chris at SotaMINIs.Com
  Home Page: http://WWW.BritishCarAndDriver.Com   http://www.pingjockey.net

  Don't Believe Everything You Think.