[mythtv] Strange color problem with playback

[Mats Cedergren]

On 2005-03-22, at 18.25, Mats Cedergren wrote:

>
> On 2005-03-22, at 09.50, Bruce Markey wrote:
>
>> Mats Cedergren wrote:
>>> Hi
>>> I try this list too, have tried mythtv-user without luck!
>>> I have a CVS compiled version of MythTV 0.17 and almost everything 
>>> is working as it should.
>>> The only problem I have is that when I watch live tv or watch 
>>> recorded shows all the colors on the picture seems to be moved up 
>>> about 1 cm ( is about 0.4 inch) on the screen.  I don't know how to 
>>> explain it better, when I look at the picture it looks like a black 
>>> and white picture at the bottom of the screen and the rest  has all 
>>> mixed up colors. It's like the illumination  and color information 
>>> is not align when outputted to the screen. This apply both to the 
>>> picture and to the GUI.
>>> I can't see that there is any problem with the colors when using any 
>>> other part of system (menus, mythmusic, program guide etc).
>>> Anybody else seen this and know how to fix it?
>>
>> Don't know if this is it but this used to be common if an odd
>> height was used for recording. It should be a multiple of 4 or 8
>> and the settings screen should enforce this. But, really, you should
>> only use 480 or 240 for NTSC or 576 or 288 for PAL so that it records
>> all the scan lines in the field evenly.
>>
>>> nVidia driver version 6111
>>
>> Probably not a good choice as this had some limitations and problems.
>> The latest driver, 7167, apparently has lots of bugs. Poor video
>> timing and dumbed down overscan were show stoppers for me but there
>> are other problems that people have reported. 6629 is probably your
>> best choice.
>>
>> --  bjm
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>>
>
> Thanks for your reply!
>
> I have checked the settings for recording and it is set to 576 since I 
> use PAL.
> I also checked the version for the nVidia driver and it is 6629 (not 
> 6111 as I first thought).
>
> I installed mythgallery today and I am getting perfect picture and 
> colors.
> I think the problem might be related to mythtv playback engine. The 
> problem started when I upgraded to version 0.17. And all old recorded 
> shows have the same problem when watched in the latest version so I do 
> not think it is related to the recording part.
>
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> mythtv-dev at mythtv.org
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I might be one step close to a solution. Today when I tried to playback 
a .vob file (ripped from one of own DVD's) I noticed then I have the 
same problem with them. The .VOB file is play-backed using mplayer so 
if I have the same problem with it, I can't blame mythtv.

My question is: What library is used for playback of mpeg2 and mpeg4 
content in both mythtv and mplayer?

If I find out what library is used and updated it, it might solve my 
problem :)

/Mats C