Makes some connection specs less vague
the videnc
quiddity was exposing its caps as any
which made switcher sometimes try to connect video into audio.
It now exposes video/h264
and video/h265
which is inaccurate (we would need to dynamically determine the caps with a meta sfid and set it to the right cap when we allocate it) but good enough for our purposes.
This also makes the decoder
quiddity have 3 different meta swid so that it can tell its real swid if they are writing video audio or text instead of the real swid saying it did all these three things at once.