Mixing live with non-live streams with audiomixer

[marcin at saepia.net]

Hello,

I have a case I struggle to understand.

I have multiqueue ! audiomixer ! something pipeline.

In order to keep it flowing all the time, and for testing purposes I add
audiotestsrc in front of it.

Then I dynamically add branches that fetch data via shmsrc.

If I set  audiotestsrc is-live = false, and shmsrcs' is-live = true, then
stopping data flow on one of shmsrcs is not stopping rest of them.

If I use any different combination, stopping one of shmsrcs causes others
to stop.

What is the rationale behind this?

Marcin
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