[FFmpeg-user] How to change internal Exif "creation time" NOT to UTC timestamp but to MEZ/MESZ in MP4 video?

[Ben]

Ok, I can change the internal EXIF Metadata "Creation time" of an MP4 video with the following command:

    ffmpeg -i input.mp4 -c copy -map 0 -metadata creation_time="2020-04-19 11:30:00" output.mp4

It works.

However the date is interpreted as UTC time zone value.

Since I the videos are taken in the timezone MEZ resp. MESZ (summer time) the timestamp does not reflect the real time of recording.

Ok, I could manually investigate if at the time of recording it was summer time or not and add 1 or 2 hours to the command timestamp value.
But this inconvenient and tedious on the long run.

Isn't there a way to tell ffmpeg:

"Hey ffmpeg, this is the UTC time. Put AUTOMATICALLY the MEZ zone time (winter time) or MESZ zone time (Summer time) in EXIF header"

Thank you
Ben