On Sunday 21 January 2007 01:11, Sander Sweers wrote:
> Roger Heflin wrote:
> > Hello,
> >
> > I have a issue, it happens with
> > FC6 2.6.18-2868 and ivtv 8.2 and it also happens with
> > FC6 2.6.19-2895 and ivtv 9.1 and ivtv svn 0.9 (as of 1/20/2007).
> > It may be described as flickering but it kind of looks like there
> > is data coming from frames in the future/past, the artifacts
> > shows only on every other line, but does not belong in the image
> > for 30+ more frames later. I see the image of an open door on
> > frame 5, but that actually does not come along until frame
> > 47. It looks like there is some sort of memory overwriting
> > going on. Using mplayer directly on the /dev/video0 device
> > has the same artifacts in it, so it appears to be something
> > in the kernel itself with the issue.
>
> Have a look at [1] and see if this is the case.
>
> Greets
> Sander
>
> [1]
> http://ivtvdriver.org/index.php/Troubleshooting#Closed_caption_.28vbi
>.29_with_non_default_reolutions
Sander,
[1] is not quite right. There are two problems with VBI: the first is
that VBI data can end up in the MPEG stream. This is true for all cards
and all drivers. Whenever VBI is being captured, either by reading
from /dev/vbi or from embedding VBI data in the MPEG stream, it is
possible for the VBI data to occasionally by mixed with the MPEG
stream. This is a firmware bug. Only the current trunk driver fixes
this as this required a huge rewrite of the interrupt/DMA handling.
The scaling bug is really a cx2584x driver bug where VBI is simply
corrupted when scaling is on. Unfortunately, this bug is very hard to
fix. And the workaround is simply to capture at full resolution or turn
off VBI capturing.
Roger,
I've never heard of a similar problem like you are describing. I would
suggest to first test your card in a Windows box. If the same happens,
then it is a hardware failure of the card.
Thanks,
Hans
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