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

MythTV mythtv at cvs.mythtv.org
Sun Aug 21 13:38:44 UTC 2005

#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:                           |  
 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):
 In cx88-video.c change (it's about line 1,389) from

 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.


 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.

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

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