QtGStreamer: Internal data flow error.

[Mandeep Sandhu]

> Thanks for your reply, I believe the answers to your questions are in the
> sample code I provided.  When I stop() I set the state to NULL, and

I didn't see any sample code in your first mail in this thread. Did
you send it in another thread?

> "Internal data flow error" is an error coming on the bus when I try to
> play() again.

You can check the return value you get when you do a setState() on
your (pipeline?) element. It's possible that there was a state change
failure when attempting to change from running state to NULL. You can
either use gst_element_get_state() (or its QtGstreamer equivalent) to
wait for the completion of the state change or  wait for a state
change message on the bus.

You can also try another thing. Change the state manually in steps,
i.e PLAYING -> READY and then READY -> NULL to see if there is any of
the state changes is failing.

Enable debugs (by setting GST_DEBUG env var) to see if there are any
warnings/criticals being reported when you attempt to change state.

HTH,
-mandeep

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