[mythtvnz] kernel/ivtv upgrade problems

Robin Gilks mythtvnz@lists.linuxnut.co.nz
Fri, 19 Jan 2007 20:46:54 +1300 (NZDT)


> Hi,
>
>> But once I start mythtv, the video changes.  It doesn't sync, and there
>> is substantial video tearing.
>>
>> If I shut mythtv down and go back to "mplayer /dev/video0", the
>> framesync video-tearing problem persists, so I'm pretty sure mythbackend
>> is setting an ivtv module setting that it shouldn't be setting.
>>
>> Ideas?
>
> I'm guessing that you changed teletext from 'none' and use non-native
> PAL resolution. If that's the case then you have to change the
> resolution to 720x572 (native PAL) - otherwise ivtv refuses to work.
> To test that - cold boot your myth box without starting mythtv and
> manualy tune using ivctl and then use mplayer to test the output - if
> everything works then the resolution is the culprit.

Just confirmed that the vbi encode process needs a reboot or
unloading/reloading the ivtv driver to prevent it messing up capture when
its turned off by setting VBI Format to None in mythtv-setup.

Guess I've found the solution to non-native resolution and 0.8 and upwards
ivtv driver versions :-)  (I use non-native for compatibility with
MythArchive and making DVDs - I may go 'native' anyway because the
filesize is based on capture rate anyway...)


-- 
Robin Gilks