I found some of Johnny Rofrano's batch Sony Vegas scripts very useful.
Like RegionsAtEvents.cs and another script that renames regions taking the original filename of the source video. Thought I would post here, before I annoy him with an email.
Is there a script that renames marks on the sony vegas timeline?
I mark 100s of frames on the timeline and use a script to export all these as pictures, like
But it would be better if I could rename these marks first, like
Where FunnyVideo01.mp4 is the name of the original source video.
In your example, the easiest thing to do would be to simply add the "FunnyVideo01-" after your files have exported using a Batch Rename utility--I use something called ReName, which I consider indispensible. It's freeware. If you want to do it within Vegas, then try something like Vegasaur. There are lots of options for naming Markers. It's not free though.