Raw video continually scrolls vertically when played

William Metcalf wmetcalf at niftytv.com
Thu Jul 7 14:22:02 PDT 2011

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,

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