Embedding GPS and timestamp tags on a per frame basis

[Vinod Kesti]

Time code meta data is supported for video buffer through GstMeta(). 

gst_buffer_add_video_time_code_meta ()

For more you can refer decklinkvideosrc code.
https://github.com/GStreamer/gst-plugins-bad/blob/master/sys/decklink/gstdecklinkvideosrc.cpp



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