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i use the recurbate downloader to mp4 fix and all the filenames remain with the timestamp

Hi, thanks. Yet I think that's not quite going to do what I mean. With my settings I get the .ts file and with this post-processing instruction:

${modelName}_${localDateTime}.jpg

...gives a contact sheet with filename identical to that of recorded .ts (both of which include timestamp in my local time, for example:

modelname_2025-09-01_07-32-45-567.ts (My local time UTC-5, 7:32:45.567 a.m.)

A Recu download of the same stream, if Recu began recording at the very same moment as me, would be like so:

modelname_2025-09-01_13-32.mp4 (UTC+1 or 1:32 p.m., no seconds or milliseconds of start time indicated).

In ctbrec post-processing there is option to set naming conventions of contact sheets. I want my contact sheet to be "model_2025-09-01_13-32-45-567.jpg" but I must manually add 6 to the "hour place" for each recorded file. I think there must be a way to change "{localDateTime}" in the instruction to do this automatically? ...and maybe it could even be done for the recorded .ts?? I am pretty ignorant of programming methods however. I know there are batch renaming programs too but if I can get ctbrec to automate totally, so much the better.

I made an error to the instruction above. I mistakenly deleted part of the line. Should be:

(${modelName})_$format(${localDateTime},yyyy-MM-dd_HH-mm-ss_SSS).jpg

For what I want as explained above, something in or after the {localDateTime} text must be added, but what?