Hurray! There I found it. A tool that makes it possible to create large batch encoding sessions just with some clicks. You need:
There you go:
open one movie file of the bunch you want to encode in VirtualDub
set the encoders for audio+video up like you want
save the “Processing Settings” to a .vcf file
you can close the video file in VirtualDub now
start VirtualDub Batcher and:
choose the .vcf you previously saved
choose the output folder
add the movie files you want to encode with the “Add Files” button
when everything looks like you want it: “Make Job List” is the button to press
open the “Job Control…” in VirtualDub now (F4 on your keyboard) and open the Job List file which is located in the VirtualDub Batchers’ folder.
press start and have a cup of tea.
Source 1: http://www.virtualdub.org/
Source 2: http://virtualdubmod.sourceforge.net/
Source 3: http://www.brightonart.org/VDubBatchAssistant.shtml