Multiple target files with seek

[danoise]

Hi. Like everybody else, I'm trying to make an automatic thumbnailer.
I got it to work pretty easily, but I would like to know if it's
possible to specify multiple target with different seek times, all in
one go?

The idea is to take a movie and automatically convert it into
thumbnails for each, say, 5 minutes. Currently, I use a batch script
to invoke ffmpeg several times, and it's working fine - but I am
guessing that performance will be dramatically improved if I was able
to run ffmpeg just once.

I have tried using the -newvideo to split my output into several
targets, but no luck so far. Perhaps the -ss (seek) option doesn't
support multiple targets?

Best regards,
Bjorn Nesby

[danoise]

If someone has experience with the "-newvideo" parameter, I'd be
interested

Bjorn