log_patterns allow to filter the FFmpeg log messages based on regular
expressions. Each entry of log_patterns is interpreted as regular
expression and matched against every non-progress log line emitted from
FFmpeg. All matching lines are returned in the matches array of the
report.
The scheduler allows to define when a process should run. It can be either
a timestamp in RFC3339 format or a crontab expression. If a scheduler is
given, reconnect and the reconnect delay will only apply to processes that
exited as failed.
The timeout allows to define when a process should be gracefully stopped.
It is measured from the actual start of that process including all reconnects
due to failures. If the process finished regularly, the timeout will be
reset.
