[mythtv-users] Internal DVD player incorrectly detects video scan (interlacing)

[Matt Doran]

Noone got any ideas about this?

Matt Doran wrote:
> Matt Doran wrote:
>> Hi Stanley,
>>
>> I don't think this is a telecine issue.  I'm in Australia, so my DVDs 
>> are mostly PAL.   However, one DVD I can reproduce the problem on is 
>> a "West Wing" import ... so I'm not sure of the standard it's using.  
>> The other was a DVD I rented and have returned ... but would have 
>> been PAL.
>>
>> I've added "ivtc" to my custom filters, but it hasn't had any 
>> effect.  I haven't seen the line "turning on inverse telecine filter" 
>> on stderr (which I can see in the code) so I don't think it's 
>> switched on.  Any way that I can confirm?
>>
>> I've attached the output of 2 -v playback for two different 
>> examples.  They both show interlacing is used in the startup 
>> sequence, the first one switches to progressive when I press play, 
>> the second switches to progressive when I go to the "Episodes" 
>> submenu even though it has no video content and nothing is playing.
>>
>> Time sequence for frontend-play1.log
>>
>>     * 20:1 7:40 - start dvd, playing startup sequence.  Startup sequence
>>       is interlaced, and plays fine.
>>     * 20:18:21 - pressed play once startup completed.  Changes to
>>       progressive, and looks awful
>>     * 20:18:50 - Manually change video sync to "Interlaced".  Looks
>>       fine  again
>>
>>
>> Time sequence for frontend-play2.log
>>
>>     * 20:23:35 - start dvd, playing startup sequence.  Startup sequence
>>       is interlaced, and plays fine.
>>     * 20:24:16 - selected the "Episode" menu.  Changes to progressive,
>>       even though there is no video content.
>>     * 20:18:21 - select an episode to play.  Still in progressive mode,
>>       looks awful
>>     * 20:18:50 - Manually change video sync to "Interlaced".  Looks fine
>>       again
>>
>>
>> What do you think?  It definitely seems to be detecting the 
>> progressive frames incorrectly.   I'm happy to help in anyway and 
>> provide any info that could be of assistance.
>>
>> (I'm running trunk r13509, and can easily test patches and/or 
>> recompile if necessary.)
>>
>>   
> oops, forgot to attach the logs.
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