decklinkvideosrc video-format=2 aborts

gst-launch-1.0 decklinkvideosrc device-number=0 mode=12 video-format=2 output-cc=true ! fakesink

Aborts:

Setting pipeline to PAUSED ...
0:00:00.019362231  6323      0x164d960 DEBUG       decklinkvideosrc gstdecklinkvideosrc.cpp:1260:gst_decklink_video_src_open:<decklinkvideosrc0> Opening
**
ERROR:gstdecklink.cpp:1574:DuplexModeSetOperationResult gst_decklink_configure_duplex_mode(Device*, BMDDuplexMode): code should not be reached
Aborted

Setting video-format=0 works correctly. output-cc=true requires video-format=2, though, right?