The "EDL" provided to the recording video processing can sometimes
contain a series of cuts in very close succession - just milliseconds
between them - purely by chance (e.g. two webcams disconnect at almost
the same time). Right now this can result in segments failing to
process (in some rare cases) or if a segment processes but was detected
to be empty (no frames), it'll get discarded.
There's also some problems which can occur that cause a too-short
recording - just milliseconds between start and stop, or between start
and the meeting end - which also currently fail to process. We've found
it's better for user feedback/support if the recording successfully
processes with no content in this case.
Add a cleanup function that goes through the EDL and consolidates cuts
which are too close together, and ensures that the final output meets
a minimum length.
49cf81f4a0