decklinksrc AV sync issue

[Vinod K]

All,

 I have BMD 4k card which supports auto mode detection(mode=0). To capture
raw audio and video I am using decklinkvideosrc and decklinkaudiosrc. I am
facing AV ouof sync issue, this is seen with both Auto mode and 756i50
followin are my observation. 

1. For mode 0 (Auto detection) audio and video are out of sync starting from
the beginning.
2. For mode 3 audio and video are out of sync after 5 minutes. Which builds
up over the time?

What could be the problem ??


example pipeline:
gst-launch-1.0 decklinkvideosrc device-number=0 connection=2 mode=0  ! queue
max-size-time=18446744073709551615 max-size-bytes=4294967295
max-size-buffers=4294967295 ! videoconvert ! avvideoscale method=7 !
video/x-raw,width=640,height=360 ! x264enc ! mux. decklinkaudiosrc
device-number=0 connection=1 ! queue  max-size-time=18446744073709551615
max-size-bytes=4294967295 max-size-buffers=4294967295 ! queue ! queue !
audioconvert !  voaacenc ! mux. mpegtsmux name=mux ! udpsink host=10.0.100.3
port=8899 --gst-debug=3 -e

Vinod



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