I tried but my timestamp is of the form %Y%m%d.%H%M%S:
Do you have an option to just specify the timestamp format?
If not, can you give an example of defining own format?
Many thanks
The documentation for the format files is here:
https://docs.lnav.org/en/latest/formats.html
The "timestamp-format" property in the format definition is an array of the formats to be tried beyond the builtin set.
Here are some example formats written by a user:
https://github.com/aspiers/lnav-formats
I think some of them define their own timestamp format.