[mythtv-users] Cropping with PVR-150

[Brad DerManouelian]

On Oct 8, 2008, at 3:10 PM, Scott Kidder wrote:

>
> On Wed, Oct 1, 2008 at 11:40 AM, Jim Stichnoth <stichnot at gmail.com>  
> wrote:
> I took a couple of screen shots to show the problem more clearly.  I  
> paused the input source (an SD DirecTiVo), then ran either "v4l2-ctl  
> -b cc" or "v4l2-ctl -b off" to turn closed captioning on or off, and  
> then captured a frame using xine.  If you flip back and forth  
> between the two images, it's clear that the first several lines are  
> being cropped and everything shifted up when cc is enabled.  It's  
> also interesting that even with the uncropped picture, the VBI stuff  
> has apparently already been removed.  If I had to guess, I would say  
> that VBI removal is being done twice when cc is on.  (I would prefer  
> that VBI were not removed at all, so that MythTV overscan or  
> whatever could be applied consistently to all inputs.)
>
> cc on: http://www.flickr.com/photos/37377999@N00/2905480460/sizes/o/
> cc off: http://www.flickr.com/photos/37377999@N00/2905480878/sizes/o/
>
>
> I have an identical problem with recordings made on my PVR-150  
> through the composite inputs.  Mine matches the 'CC On' image.  I'd  
> basically given up on this problem until I saw your message!  For  
> what it's worth, here's the IVTV output for my PVR-150 card:

Have you tried asking on the ivtv mailing list? This is clearly an  
ivtv issue and they would be much more knowledgeable about why this is  
happening. It looks intentional to me, but I don't know why.

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