What are pseudo live sources?

[cee1]

Hi all,

dx9screencapsrc is a pseudo live source, we notice it will do
gst_base_src_do_sync() after a screenshot, which introduces about
1/framerate latency for each frame.

What's difference between "pseudo live" and "live" sources? Will
"live" source block while retrieving data if not at a frame moment?
Can dx9screencapsrc also be implemented as "real" live source?



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Regards,

- cee1