Sounds like you may already have it.
The Editdroid version is the broadcast master.
I am fairly certain the Zion Hybrid version (mentioned above) was taken from that source and a little editing was done to improve it, and the commercials were added back in.
Both those versions have threads on this forum which go into greater detail.
Oh damn, I need to look into this. Thanks for the info, at the moment I’m still getting used to using AviSynth and I’ll check out the other threads