[Bug 749020] New: decklinkvideosrc: failed to capture camera frames

[GStreamer (GNOME Bugzilla)]

https://bugzilla.gnome.org/show_bug.cgi?id=749020

            Bug ID: 749020
           Summary: decklinkvideosrc: failed to capture camera frames
    Classification: Platform
           Product: GStreamer
           Version: git master
                OS: Linux
            Status: NEW
          Severity: normal
          Priority: Normal
         Component: gst-plugins-bad
          Assignee: gstreamer-bugs at lists.freedesktop.org
          Reporter: arjunsurendrans at gmail.com
        QA Contact: gstreamer-bugs at lists.freedesktop.org
                CC: jaredsmith at jaredsmith.net, slomo at coaxion.net
     GNOME version: ---

I used the following pipleline to capture audio and video from a Blackmagic 4K
Extreme card, but I could capture only audio. I am using a GoPro Hero 3+ camera
in an Ubuntu 12.04 machine.

gst-launch-1.0 decklinkvideosrc mode=18 connection=2 buffer-size=300 !
videoconvert ! theoraenc ! queue ! m. decklinkaudiosrc connection=1 !
audioconvert ! vorbisenc ! queue ! m. oggmux name=m ! filesink
location='test.ogg'

It creates the file 'test.ogg' but has only black frames, and it records audio
properly.
Is this launch line correct?
I have connected the GoPro camera using HDMI and I have tried another camera
but the result is the same.

The following is the GStreamer debug log

GST_DEBUG=decklinkvideosrc:6 gst-launch-1.0 decklinkvideosrc mode=18
connection=2 buffer-size=300 ! videoconvert ! theoraenc ! queue ! m.
decklinkaudiosrc connection=1 ! audioconvert ! vorbisenc ! queue ! m. oggmux
name=m ! filesink location='blah.ogg'

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