The audio rendering system uses an event-based mechanism where if audio needs
to be converted (i.e. to a different sample rate), it will create a conform
task and re-render that section again when the audio is ready. Unfortunately,
the export code didn't respect this and would start encoding audio once the
initial queue was done. This usually resulted in silent audio, but could also
result in "uninitialized" audio that would crash any float-based encoders
(e.g. AAC). Now we use a different signal that only emits once the queue is done
AND all conforms are done.
itsmattkc
92da0c220d