Raw video continually scrolls vertically when played

[william.l.metcalf]

I have an application in C which uses the DeckLink API to capture video
from my Intensity Pro capture card.  I take each video frame and put it
into a queue, and then I push that queue to a gstreamer pipeline using
the appsrc element.  I take each of these raw frames from the pipeline
and write them to a file.  Whenever I try to play this file I get the
video that I have captured from the cards, except that it is continually
scrolling vertically on the screen.  I am almost sure that I have my
parameters right because the picture is perfect except for it scrolling
vertically.  I am not sure if this is specifically a gstreamer question,
but has anybody else ever run into a problem like this or know what
could be causing this problem?

Thank you very much for the help,
William
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[Josh Doe]

Usually whenever I have scrolling (digital) video it's because the height, width, or gap between frames is slightly off. However if it's analog video it could be some other issue, like not using the correct mode or some other funny timing issue.

-Josh

On Thu, Jul 7, 2011 at 5:22 PM, William Metcalf <[hidden email]> wrote:

I have an application in C which uses the DeckLink API to capture video from my Intensity Pro capture card.  I take each video frame and put it into a queue, and then I push that queue to a gstreamer pipeline using the appsrc element.  I take each of these raw frames from the pipeline and write them to a file.  Whenever I try to play this file I get the video that I have captured from the cards, except that it is continually scrolling vertically on the screen.  I am almost sure that I have my parameters right because the picture is perfect except for it scrolling vertically.  I am not sure if this is specifically a gstreamer question, but has anybody else ever run into a problem like this or know what could be causing this problem?

Thank you very much for the help,
William
_______________________________________________
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[hidden email]
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