Chapters Timecodes from AVS

[jsada]

I am sure there must be easy solution to this. But I have not been able to find it. After days of googling nothing seems to be visible.

I am trying to put Chapters in my AVS scripts for final MKV output.
My script contains multiple clips (amalgamation of video clips, and pictures).

" I would like to put a Chapter start at beginning of each my clip. "

ShowSMPTE will Timecodes in video, but not to an external text file like chapters.txt.

My normal route is x264 for .264 and faac/neroAacEnc for .aac or wav(vdub) to ac3 (eac3to), to using mkvmerge for MKV with chapters.

I don't mind doing another pass on my .AVS as I am doing second pass for Audio already. This pass should create a text file compatible with mkvmerge with my specified timecodes.

Any info would be helpful.
Jay