[HELP] Specify parts of video to be encoded

[Selur]

Will i have any success altering the script , using the trim method,
concatenating some clips into a final one, and using the rest of the script
with this new clip object.

If you know what you are doing, you could probably do this (for the video) inside the custom sections (don't forget to let Hybrid know about the changes in frame count&co), but this would only be for the video. (One could also write a custom script and use that as source.)
=> Hybrid is no NLE and thus not meant for such task.
Better use an NLE, combine your clip the way you want. Export that into a lossless format and feed that as source to Hybrid if you want to use Hybrid for filtering and encoding.

Cu Selur