Feature request - Video source selection based on time

[sethcohn]

Consider this as another 'would be cool if...'

I have multiple folders of video sources... I want to have mugen use source A for the first minute, source B for the second minute, source C for the 3rd minute... etc. So the generated video wouldn't use anything from Source A after minute 1...

My workaround (I'm still using older mugen code for this, since no regen in new_mugen yet) is to generate multiple videos, and then edit the json specs into a single file, so that it'll make a new json with the desired source separation intact. And then regen a new video that does the above. Hacky but it works for now.