"Uncrashable" video/audio source and sinks

[superlou]

> Maybe think of these elements as a projector projecting something onto a
> screen (sink) and a camera capturing that very same screen (src). The
> camera will just keep going no matter what. These elements are useful to
> decouple input/output branches. The timing is mostly dependent on how
> the sink renders the buffers (plus the jitter/delay with which the
> source will pick up the frame). The source is always live no matter what
> the input is on the other side.

That makes sense to me.  Are there any big performance hits for this
approach to decoupling if I were to have  50 sets of inter*srcs and and
inter*sinks coupled together?  Would it be any worse than using a comparable
number of queue/input-selector/videotestsrc fallback elements?



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