windows - Command line merge a sequence of overlapping binary file chunks in Win or Linux

I have a set of binary file chunks from a video file. They are partly overlapping.

To exemplify say that the video file binary data can be represented like this:

---ABCDEFGHIJKLMNOPQRSTUVXYZ 

where

--- 

is a header.

The chunks can be represented like this (simplified because there are some differences in the header part for each chunk):

chunk 1: "---ABCD"
chunk 2: "---DEFG"
chunk 3: "---GHIJ"
chunk 4: "---JKLM"
...

I need a command line tool that merges these files. It should take the end part of chunk 1, search chunk 2 for that pattern, join chunk 1 to the part of chunk 2 from pattern to end (ignoring all data in chunk 2 before the pattern start).

Then repeat the operation for all remaining chunks until we have the complete video file.