[mythtv-users] Changing aspect ratio?

David Frascone dave at frascone.com
Thu May 3 19:55:15 UTC 2007



Michael T. Dean wrote:
> On 05/03/2007 01:46 PM, David Frascone wrote:
>   
>> Michael T. Dean wrote:
>>   
>>     
>>> On 05/03/2007 09:48 AM, David Frascone wrote:
>>>       
>>>> HD recorded on different tuners (HDHomeRun -vs- 
>>>> Firewire) seem to have different shapes.  Both *should* have a 16:9 
>>>> ratio, like my TV, but when I get video off of the firewire, I have top 
>>>> and bottom letterboxes.
>>>>         
>>> You need to properly specify the display's aspect ratio in X. ...
>>>       
>> I made those modifications, but it didn't really seem to do anything.  
>> (I checked the Xorg.log file -- the changes did do *something*, but 
>> nothing noticable).
>>   
>>     
>
> You're not using an aspect override (in frontend settings under 
> "Playback Settings" in Myth, are you?  That will "break" some things on 
> some configurations (aspect overrides are only required for users who 
> don't properly configure their systems or who capture at, for example, 
> 4:3 but want to always stretch output to 16:9).
>
>   
>> HDTV via HDHomeRun looks great, if I change the aspect ratio to 4:3.  
>> (Full screen on my 16x9 monitor).  HDTV via firewire has top and bottom 
>> letterboxes, and no aspect change removes them.  (Well, I think a couple 
>> of the zooms remove them, but also remove most of the picture)
>>
>> Any other solutions?
>>     
>
> I completely agree with Rich's suggestion--connecting the firewire to 
> the TV directly would verify whether the problem is yours or Comcast's.  
> If you can't do the firewire, you could try connecting another STB 
> output to the TV, although it would still be possible that the STB is 
> just doing firewire output incorrectly.
>
>   
>>   I'm guessing my next recourse is to add a new 
>> aspect change to the frontend menu.
>>     
>
> If you do go down this road (and many--including Daniel, who will 
> probably otherwise end up doing it himself--will be pleased with your 
> contributions), please look at implementing this as Daniel requested 
> (separating zoom and aspect ratio).  See, also:
>
> http://www.gossamer-threads.com/lists/mythtv/dev/210598#210598
> http://www.gossamer-threads.com/lists/mythtv/dev/210577#210577
>
> http://www.gossamer-threads.com/lists/mythtv/dev/240097#240097
> http://www.gossamer-threads.com/lists/mythtv/dev/248894#248894
>
>   
Ok -- Cable box was set at 16:9 already.  TV doesn't have firewire 
input.  So -- I'll start digging through the code.  I assume all 
contributions should be mailed to myth-dev?

-Dave



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