A minimal history is a history entry without log and prelude.
The corresponding config entry is ffmpeg.log.max_minimal_history. This value is
added on top of the ffmpeg.log.max_history value. I.e. the latest max_history
entries contain the log and prelude, and the remaining entries don't have the
log and prelude. In total there are max_minimal_history+max_history history
entries.
If you want no history, set both values to 0.
If you want only full history, set max_minimal_history to 0.
If you want only minimal history, set max_history to 0.
created_at represents the time when the configuration has been persisted to disk.
loaded_at represents the time when the configuration has actually been used.
If created_at is larger than loaded_at, then the Core needs a reload in order
to apply the latest configuration.
if created_at is lower than laoded_at, then the Core applied the latest
configuration.
The value of updated_at is irrelevant and shouldn't be used.
