[mythtv-commits] Ticket #241: PAL-I problem & unpleasant fix

[MythTV]

#241: PAL-I problem & unpleasant fix
-------------------------------------+--------------------------------------
 Reporter:  swesemeyer at ntlworld.com  |       Owner:  ijr   
     Type:  enhancement              |      Status:  new   
 Priority:  major                    |   Milestone:        
Component:  mythtv                   |     Version:  0.18.1
 Severity:  medium                   |         Cc:                           |  
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 I filed this in bugzilla already but bugzilla seems to have been removed
 so I just refile it here for reference in case someone else comes across
 the same problem.

 MythTV does not allow the specification of PAL-I as the TV norm instead it
 only allows the user to select PAL which I believe translates to
 v4l2_STD_PAL (for the v4l2 API). At least for the Conexant based Hauppauge
 WinTV PCI FM card this means that the TV norm gets set to PAL-BG when
 MythTV tunes for the card for the first time. In PAL-I countries like the
 UK this results in recording a perfect picture with static noise audio.

 The workaround for the time being is to recompile the cx88xx-video.c
 source as follows (this is copied from Andrew Wilkinson's post to the v4l
 mailing list):
 <quote>
 In cx88-video.c change (it's about line 1,389) from
 cx88_set_tvnorm(dev->core,&tvnorms[i]);
 to
 cx88_set_tvnorm(dev->core,&tvnorms[4]);

 Then recompile, install and load the cx8800 and cx88xx modules.

 This ignores the tv norm the application is using and forces it to use
 PAL_I. Seeing as I doubt I'll ever be using my computer somewhere that
 isn't PAL_I this is a reasonable thing to do.

 </quote>

 Ideally, it would be great if MythTV could offer an option to specify
 which PAL norm should be used for V4L2_STD_PAL either as a start-up
 parameter or a config option somewhere.

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Ticket URL: <http://cvs.mythtv.org/trac/ticket/241>
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