Video and data synchronization

[gotsring]

I understand that the video and the data are separate, I was suggesting that
you append the data from the DB to the video frames as they are being
decoded using a custom filter element. However, I don't think that I
understand your situation, can you explain or share your pipeline? 

Instead of starting or stopping the GstClock, would it be better to just
allow the pipeline to play, then read whatever the current video time is and
use that to select/show data? Preloading/buffering data from the DB should
prevent slowdown or bad synchronization due to a slow response from the DB,
and then there should be no issue pausing or stopping the video because you
never write the clock values.



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